diff --git a/.github/workflows/release-branch.yml b/.github/workflows/build.yml
similarity index 64%
rename from .github/workflows/release-branch.yml
rename to .github/workflows/build.yml
index ecb929b..45f062b 100644
--- a/.github/workflows/release-branch.yml
+++ b/.github/workflows/build.yml
@@ -53,6 +53,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+      id-token: write
 
     steps:
       - name: Check out repository
@@ -63,10 +64,24 @@ jobs:
         with:
           node-version: 24
           cache: npm
+          registry-url: https://registry.npmjs.org
 
       - name: Install dependencies
         run: npm ci
 
+      - name: Derive release version
+        id: version
+        shell: bash
+        run: |
+          BASE_VERSION="$(node -p "require('./package.json').version")"
+          RELEASE_VERSION="$(node -e "const [major, minor] = process.argv[1].split('.'); process.stdout.write([major, minor, process.argv[2]].join('.'));" "$BASE_VERSION" "${GITHUB_RUN_NUMBER}")"
+
+          echo "base_version=${BASE_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "release_version=${RELEASE_VERSION}" >> "$GITHUB_OUTPUT"
+
+      - name: Apply release version
+        run: npm version "${{ steps.version.outputs.release_version }}" --no-git-tag-version
+
       - name: Build package
         run: npm run build
 
@@ -74,7 +89,7 @@ jobs:
         id: package
         shell: bash
         run: |
-          VERSION="$(node -p "require('./package.json').version")"
+          VERSION="${{ steps.version.outputs.release_version }}"
           SHORT_SHA="${GITHUB_SHA::7}"
           TAG="v${VERSION}-${SHORT_SHA}"
           PACKAGE_TGZ="$(npm pack --silent)"
@@ -84,6 +99,9 @@ jobs:
           echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
           echo "package_tgz=${PACKAGE_TGZ}" >> "$GITHUB_OUTPUT"
 
+      - name: Publish to npm
+        run: npm publish --access public --provenance
+
       - name: Create GitHub release
         env:
           GH_TOKEN: ${{ github.token }}
@@ -91,15 +109,15 @@ jobs:
         run: |
           gh release create "${{ steps.package.outputs.tag }}" \
             "${{ steps.package.outputs.package_tgz }}" \
-            qr-scanner-worker.min.js \
-            qr-scanner-worker.min.js.map \
-            qr-scanner.legacy.min.js \
-            qr-scanner.legacy.min.js.map \
-            qr-scanner.min.js \
-            qr-scanner.min.js.map \
-            qr-scanner.umd.min.js \
-            qr-scanner.umd.min.js.map \
-            types/qr-scanner.d.ts \
+            artifacts/qr-scanner-worker.min.js \
+            artifacts/qr-scanner-worker.min.js.map \
+            artifacts/qr-scanner.legacy.min.js \
+            artifacts/qr-scanner.legacy.min.js.map \
+            artifacts/qr-scanner.min.js \
+            artifacts/qr-scanner.min.js.map \
+            artifacts/qr-scanner.umd.min.js \
+            artifacts/qr-scanner.umd.min.js.map \
+            artifacts/types/qr-scanner.d.ts \
             --target "${GITHUB_SHA}" \
             --title "qr-scanner v${{ steps.package.outputs.version }} (${{ steps.package.outputs.short_sha }})" \
             --generate-notes
diff --git a/.gitignore b/.gitignore
index c4b311b..1420ace 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 node_modules
 .DS_Store
-tmp
\ No newline at end of file
+tmp
+artifacts/*
+!artifacts/.gitkeep
\ No newline at end of file
diff --git a/README.md b/README.md
index fa57c1c..9c332dc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # QR Scanner
 
-Javascript QR Code Scanner based on [Cosmo Wolfe's javascript port](https://github.com/cozmo/jsqr) of [Google's ZXing library](https://github.com/zxing/zxing).
+JavaScript QR Code Scanner based on [Cosmo Wolfe's javascript port](https://github.com/cozmo/jsqr) of [Google's ZXing library](https://github.com/zxing/zxing); see also the orphaned upstream npm package [`qr-scanner`](https://www.npmjs.com/package/qr-scanner).
 
 In this library, several improvements have been applied over the original port:
 
@@ -15,35 +15,33 @@ According to [our benchmarking](https://github.com/danimoh/qr-scanner-benchmark)
 
 The library supports scanning a continuous video stream from a web cam as well as scanning of single images.
 
-The development of this library is sponsored by [nimiq](https://www.nimiq.com), world's first browser based blockchain.
-
-[<img src="https://nimiq.github.io/qr-scanner/nimiq_logo_rgb_horizontal.svg" alt="nimiq.com" width="250">](https://nimiq.com)
-
-
-## Demo
-See [https://nimiq.github.io/qr-scanner/demo/](https://nimiq.github.io/qr-scanner/demo/)
-
 ## Installation
 
-To install via npm:
+Install from npm if you bundle your application:
 ```bash
-npm install --save qr-scanner
+npm install @codeuctivity/qr-scanner
 ```
-Or simply copy `qr-scanner.min.js` and `qr-scanner-worker.min.js` to your project.
+
+Then import it from your application code:
+```js
+import QrScanner from '@codeuctivity/qr-scanner';
+```
+
+If you are not using a bundler, copy `artifacts/qr-scanner.min.js` and `artifacts/qr-scanner-worker.min.js` from the published package (or a GitHub release) into your project and keep both files next to each other.
 
 ## Setup
 
-The QR Scanner consists of two main files. `qr-scanner.min.js` is the main API file which loads the worker script `qr-scanner-worker.min.js` via a dynamic import, only if needed. If you are not using a bundler like Rollup or Webpack that handles dynamic imports automatically, you might have to copy `qr-scanner-worker.min.js` over to your dist, next to `qr-scanner.min.js` or next to the script into which you're bundling `qr-scanner.min.js`.
+The QR Scanner consists of two main files. `artifacts/qr-scanner.min.js` is the main API file which loads the worker script `artifacts/qr-scanner-worker.min.js` via a dynamic import, only if needed. If you are not using a bundler like Rollup or Webpack that handles dynamic imports automatically, you might have to copy `artifacts/qr-scanner-worker.min.js` over to your dist, next to `artifacts/qr-scanner.min.js` or next to the script into which you're bundling `artifacts/qr-scanner.min.js`.
 
-`qr-scanner.min.js` is an es6 module and can be imported as follows:
+`artifacts/qr-scanner.min.js` is an es6 module and can be imported as follows:
 ```js
-import QrScanner from 'path/to/qr-scanner.min.js'; // if using plain es6 import
-import QrScanner from 'qr-scanner'; // if installed via package and bundling with a module bundler like webpack or rollup
+import QrScanner from 'path/to/artifacts/qr-scanner.min.js'; // if using plain es6 import
+import QrScanner from '@codeuctivity/qr-scanner'; // if installed via package and bundling with a module bundler like webpack or rollup
 ```
 This requires the importing script to also be an es6 module or a module script tag, e.g.:
 ```html
 <script type="module">
-    import QrScanner from 'path/to/qr-scanner.min.js';
+    import QrScanner from 'path/to/artifacts/qr-scanner.min.js';
     // do something with QrScanner
 </script>
 ```
@@ -51,27 +49,27 @@ This requires the importing script to also be an es6 module or a module script t
 If your project is not based on es6 modules you can
 - use a [dynamic import](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import#Dynamic_Imports) to import the es6 module:
 ```js
-import('path/to/qr-scanner.min.js').then((module) => {
+import('path/to/artifacts/qr-scanner.min.js').then((module) => {
     const QrScanner = module.default;
     // do something with QrScanner
 });
 ```
-- use the [UMD build](https://github.com/umdjs/umd) `qr-scanner.umd.min.js` for direct usage as non-module script
+- use the [UMD build](https://github.com/umdjs/umd) `artifacts/qr-scanner.umd.min.js` for direct usage as non-module script
 ```html
-<script src="path/to/qr-scanner.umd.min.js"></script>
+<script src="path/to/artifacts/qr-scanner.umd.min.js"></script>
 <script>
     // do something with QrScanner
 </script>
 ```
-- bundle `qr-scanner.umd.min.js` directly with your non-module code with tools like [gulp](https://gulpjs.com/) or [grunt](https://gruntjs.com/).
+- bundle `artifacts/qr-scanner.umd.min.js` directly with your non-module code with tools like [gulp](https://gulpjs.com/) or [grunt](https://gruntjs.com/).
 - bundle the lib with `require` based bundlers like [browserify](https://browserify.org/):
 ```js
-const QrScanner = require('qr-scanner'); // if installed via package
-const QrScanner = require('path/to/qr-scanner.umd.min.js'); // if not installed via package
+const QrScanner = require('@codeuctivity/qr-scanner'); // if installed via package
+const QrScanner = require('path/to/artifacts/qr-scanner.umd.min.js'); // if not installed via package
 // do something with QrScanner
 ```
 
-This library uses ECMAScript 2017 features like `async` functions. If you need to support old browsers, you can use `qr-scanner.legacy.min.js`, which is ECMAScript 2015 (ES6) compatible. It's a UMD build and can be used as a replacement for `qr-scanner.umd.min.js`, see above. Note, that the legacy build is larger as it includes some polyfills and, to support browsers that don't support dynamic imports, inlines the worker script which however would be needed to be loaded in legacy browsers anyway. You will likely not need to use the legacy build though, as general browser support is already very good for the regular build. Especially if you want to scan from the device's camera, camera support by the browser is the stricter restriction.
+This library uses ECMAScript 2017 features like `async` functions. If you need to support old browsers, you can use `artifacts/qr-scanner.legacy.min.js`, which is ECMAScript 2015 (ES6) compatible. It's a UMD build and can be used as a replacement for `artifacts/qr-scanner.umd.min.js`, see above. Note that the legacy build is larger because it includes polyfills and, to support browsers that don't support dynamic imports, inlines the worker script which would have to be loaded separately in legacy browsers anyway. You will likely not need to use the legacy build though, as general browser support is already very good for the regular build. Especially if you want to scan from the device's camera, camera support by the browser is the stricter restriction.
 
 ## Usage
 
@@ -111,8 +109,8 @@ Supported options are:
 | `preferredCamera` | Preference for the camera to be used. The preference can be either a device id as returned by `listCameras` or a facing mode specified as `'environment'` or `'user'`. The default is `'environment'`. Note that there is no guarantee that the preference can actually be fulfilled. |
 | `maxScansPerSecond` | This option can be used to throttle the scans for less battery consumption. The default is 25. [If supported by the browser](https://caniuse.com/mdn-api_htmlvideoelement_requestvideoframecallback), the scan rate is never higher than the camera's frame rate to avoid unnecessary duplicate scans on the same frame. |
 | `calculateScanRegion` | A method that determines a region to which scanning should be restricted as a performance improvement. This region can optionally also be scaled down before performing the scan as an additional performance improvement. The region is specified as `x`, `y`, `width` and `height`; the dimensions for the downscaled region as `downScaledWidth` and `downScaledHeight`. Note that the aspect ratio between `width` and `height` and `downScaledWidth` and `downScaledHeight` should remain the same. By default, the scan region is restricted to a centered square of two thirds of the video width or height, whichever is smaller, and scaled down to a 400x400 square. |
-| `highlightScanRegion` | Set this option to `true` for rendering an outline around the scan region on the video stream. This uses an absolutely positioned `div` that covers the scan region. This `div` can either be supplied as option `overlay`, see below, or automatically created and then accessed via `qrScanner.$overlay`. It can be freely styled via CSS, e.g. by setting an outline, border, background color, etc. See the [demo](https://nimiq.github.io/qr-scanner/demo/) for examples. |
-| `highlightCodeOutline` | Set this option to `true` for rendering an outline around detected QR codes. This uses an absolutely positioned `div` on which an SVG for rendering the outline will be placed. This `div` can either be supplied as option `overlay`, see below, or be accessed via `qrScanner.$overlay`. The SVG can be freely styled via CSS, e.g. by setting the fill color, stroke color, stroke width, etc. See the [demo](https://nimiq.github.io/qr-scanner/demo/) for examples. For more special needs, you can also use the `cornerPoints` directly, see below, for rendering an outline or the points yourself. |
+| `highlightScanRegion` | Set this option to `true` for rendering an outline around the scan region on the video stream. This uses an absolutely positioned `div` that covers the scan region. This `div` can either be supplied as option `overlay`, see below, or automatically created and then accessed via `qrScanner.$overlay`. It can be freely styled via CSS, e.g. by setting an outline, border, background color, etc. |
+| `highlightCodeOutline` | Set this option to `true` for rendering an outline around detected QR codes. This uses an absolutely positioned `div` on which an SVG for rendering the outline will be placed. This `div` can either be supplied as option `overlay`, see below, or be accessed via `qrScanner.$overlay`. The SVG can be freely styled via CSS, e.g. by setting the fill color, stroke color, stroke width, etc. For more special needs, you can also use the `cornerPoints` directly, see below, for rendering an outline or the points yourself. |
 | `overlay` | A custom `div` that can be supplied for use for `highlightScanRegion` and `highlightCodeOutline`. The `div` should be a sibling of `videoElem` in the DOM. If this option is supplied, the default styles for `highlightCodeOutline` are not applied as the expectation is that the element already has some custom style applied to it. |
 | `returnDetailedScanResult` | Enforce reporting detailed scan results, see below. |
 
@@ -245,8 +243,8 @@ This will stop the camera stream and web worker and cleans up event listeners.
 The QR scanner will be dysfunctional after it has been destroyed.
 
 ## Build the project
-The project is prebuild in qr-scanner.min.js in combination with qr-scanner-worker.min.js. Building yourself is only necessary if you want to change the code in
-the /src folder. NodeJs is required for building.
+The published npm package (and GitHub releases) include the prebuilt artifacts under `artifacts/` (e.g. `artifacts/qr-scanner.min.js` and `artifacts/qr-scanner-worker.min.js`).
+To generate them locally from this repo checkout (required for the demo and integration tests), run the build steps below. NodeJs is required for building.
 
 Install required build packages:
 ```batch
diff --git a/artifacts/.gitkeep b/artifacts/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/demo/index.html b/demo/index.html
index 9f1f0d0..ab3387e 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -62,10 +62,10 @@ <h1>Scan from File:</h1>
 <b>Detected QR code: </b>
 <span id="file-qr-result">None</span>
 
-<!--<script src="../qr-scanner.umd.min.js"></script>-->
-<!--<script src="../qr-scanner.legacy.min.js"></script>-->
+<!--<script src="../artifacts/qr-scanner.umd.min.js"></script>-->
+<!--<script src="../artifacts/qr-scanner.legacy.min.js"></script>-->
 <script type="module">
-    import QrScanner from "../qr-scanner.min.js";
+    import QrScanner from "../artifacts/qr-scanner.min.js";
 
     const video = document.getElementById('qr-video');
     const videoContainer = document.getElementById('video-container');
diff --git a/nimiq_logo_rgb_horizontal.svg b/nimiq_logo_rgb_horizontal.svg
deleted file mode 100644
index ca7fbe4..0000000
--- a/nimiq_logo_rgb_horizontal.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 270 64"><defs><style>.cls-1{fill:url(#radial-gradient);}.cls-2{fill:#1f2348;}</style><radialGradient id="radial-gradient" cx="54.17" cy="63.17" r="72.02" gradientUnits="userSpaceOnUse"><stop offset="0" stop-color="#ec991c"/><stop offset="1" stop-color="#e9b213"/></radialGradient></defs><title>nimiq_logo_rgb_horizontal</title><path class="cls-1" d="M71.2,29l-15-26A6,6,0,0,0,51,0H21a6,6,0,0,0-5.19,3L.8,29a6,6,0,0,0,0,6l15,26A6,6,0,0,0,21,64H51a6,6,0,0,0,5.19-3l15-26A6,6,0,0,0,71.2,29Z"/><path class="cls-2" d="M124.5,13H131V51h-5L105.5,24.5V51H99V13h5l20.5,26.5Z"/><path class="cls-2" d="M144,51V13h7V51Z"/><path class="cls-2" d="M195.5,13H201V51h-6V27.5L184.75,51h-4.5L170,27.5V51h-6V13h5.5l13,29.75Z"/><path class="cls-2" d="M214,51V13h7V51Z"/><path class="cls-2" d="M267.76,42.34a15.86,15.86,0,0,1-8,7.59,21.09,21.09,0,0,0,3.05,4.1,38,38,0,0,0,4,3.72L262,61.5a29,29,0,0,1-4.82-4.38,31.82,31.82,0,0,1-4.07-5.67c-.28,0-1.1,0-1.61,0a19.67,19.67,0,0,1-9.89-2.36,15.71,15.71,0,0,1-6.4-6.8A23.51,23.51,0,0,1,233,32a22.34,22.34,0,0,1,2.24-10.34,15.87,15.87,0,0,1,6.42-6.8,21.8,21.8,0,0,1,19.73,0,15.71,15.71,0,0,1,6.4,6.8A22.6,22.6,0,0,1,270,32,23.33,23.33,0,0,1,267.76,42.34Zm-24.73,0a11.7,11.7,0,0,0,16.94,0c2-2.43,3-5.85,3-10.37s-1-8-3-10.39a11.78,11.78,0,0,0-16.94,0c-2,2.39-3,5.9-3,10.42S241,39.94,243,42.37Z"/></svg>
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 20fef09..19233d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
-  "name": "qr-scanner",
-  "version": "1.4.2",
+  "name": "@codeuctivity/qr-scanner",
+  "version": "1.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "qr-scanner",
-      "version": "1.4.2",
+      "name": "@codeuctivity/qr-scanner",
+      "version": "1.5.0",
       "license": "MIT",
       "dependencies": {
         "@types/offscreencanvas": "^2019.6.4"
diff --git a/package.json b/package.json
index f0f902f..8a1a9e4 100644
--- a/package.json
+++ b/package.json
@@ -1,30 +1,32 @@
 {
-  "name": "qr-scanner",
-  "version": "1.4.2",
+  "name": "@codeuctivity/qr-scanner",
+  "version": "1.5.0",
   "description": "A javascript QR scanner library",
   "packageManager": "npm@11.6.2",
-  "main": "qr-scanner.umd.min.js",
-  "module": "qr-scanner.min.js",
-  "types": "types/qr-scanner.d.ts",
+  "main": "artifacts/qr-scanner.umd.min.js",
+  "module": "artifacts/qr-scanner.min.js",
+  "types": "artifacts/types/qr-scanner.d.ts",
   "files": [
     "LICENSE",
-    "qr-scanner.min.js",
-    "qr-scanner.min.js.map",
-    "qr-scanner.umd.min.js",
-    "qr-scanner.umd.min.js.map",
-    "qr-scanner.legacy.min.js",
-    "qr-scanner.legacy.min.js.map",
-    "qr-scanner-worker.min.js",
-    "qr-scanner-worker.min.js.map",
-    "types/qr-scanner.d.ts"
+    "artifacts/qr-scanner.min.js",
+    "artifacts/qr-scanner.min.js.map",
+    "artifacts/qr-scanner.umd.min.js",
+    "artifacts/qr-scanner.umd.min.js.map",
+    "artifacts/qr-scanner.legacy.min.js",
+    "artifacts/qr-scanner.legacy.min.js.map",
+    "artifacts/qr-scanner-worker.min.js",
+    "artifacts/qr-scanner-worker.min.js.map",
+    "artifacts/types/qr-scanner.d.ts"
   ],
   "scripts": {
-    "build": "rollup --config && tsc src/qr-scanner.ts --target esnext --module esnext --declaration --declarationDir types --emitDeclarationOnly",
+    "build": "rollup --config && tsc src/qr-scanner.ts --target esnext --module esnext --declaration --declarationDir artifacts/types --emitDeclarationOnly",
+    "prepack": "npm run build",
+    "pack:local": "npm pack --pack-destination artifacts",
     "test:integration": "playwright test"
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/nimiq/qr-scanner.git"
+    "url": "git+https://github.com/Codeuctivity/qr-scanner.git"
   },
   "keywords": [
     "qr",
@@ -40,9 +42,13 @@
   "author": "Nimiq (https://nimiq.com)",
   "license": "MIT",
   "bugs": {
-    "url": "https://github.com/nimiq/qr-scanner/issues"
+    "url": "https://github.com/Codeuctivity/qr-scanner/issues"
+  },
+  "homepage": "https://github.com/Codeuctivity/qr-scanner#readme",
+  "publishConfig": {
+    "access": "public",
+    "provenance": true
   },
-  "homepage": "https://github.com/nimiq/qr-scanner#readme",
   "dependencies": {
     "@types/offscreencanvas": "^2019.6.4"
   },
diff --git a/playwright/fixtures/qr-camera-harness.html b/playwright/fixtures/qr-camera-harness.html
index 3bb98b0..b69e889 100644
--- a/playwright/fixtures/qr-camera-harness.html
+++ b/playwright/fixtures/qr-camera-harness.html
@@ -11,7 +11,7 @@
     <video id="video" muted playsinline autoplay></video>
 
     <script type="module">
-        import QrScanner from '/qr-scanner.min.js';
+        import QrScanner from '/artifacts/qr-scanner.min.js';
 
         QrScanner._disableBarcodeDetector = true;
 
diff --git a/qr-scanner-worker.min.js b/qr-scanner-worker.min.js
deleted file mode 100644
index adcbc40..0000000
--- a/qr-scanner-worker.min.js
+++ /dev/null
@@ -1,98 +0,0 @@
-export const createWorker=()=>new Worker(URL.createObjectURL(new Blob([`class x{constructor(a,b){this.width=b;this.height=a.length/b;this.data=a}static createEmpty(a,b){return new x(new Uint8ClampedArray(a*b),a)}get(a,b){return 0>a||a>=this.width||0>b||b>=this.height?!1:!!this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c?1:0}setRegion(a,b,c,d,e){for(let f=b;f<b+d;f++)for(let g=a;g<a+c;g++)this.set(g,f,!!e)}}
-class A{constructor(a,b,c){this.width=a;a*=b;if(c&&c.length!==a)throw Error("Wrong buffer size");this.data=c||new Uint8ClampedArray(a)}get(a,b){return this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c}}
-class ba{constructor(a){this.bitOffset=this.byteOffset=0;this.bytes=a}readBits(a){if(1>a||32<a||a>this.available())throw Error("Cannot read "+a.toString()+" bits");var b=0;if(0<this.bitOffset){b=8-this.bitOffset;var c=a<b?a:b;b-=c;b=(this.bytes[this.byteOffset]&255>>8-c<<b)>>b;a-=c;this.bitOffset+=c;8===this.bitOffset&&(this.bitOffset=0,this.byteOffset++)}if(0<a){for(;8<=a;)b=b<<8|this.bytes[this.byteOffset]&255,this.byteOffset++,a-=8;0<a&&(c=8-a,b=b<<a|(this.bytes[this.byteOffset]&255>>c<<c)>>c,
-this.bitOffset+=a)}return b}available(){return 8*(this.bytes.length-this.byteOffset)-this.bitOffset}}var B,C=B||(B={});C.Numeric="numeric";C.Alphanumeric="alphanumeric";C.Byte="byte";C.Kanji="kanji";C.ECI="eci";C.StructuredAppend="structuredappend";var D,E=D||(D={});E[E.Terminator=0]="Terminator";E[E.Numeric=1]="Numeric";E[E.Alphanumeric=2]="Alphanumeric";E[E.Byte=4]="Byte";E[E.Kanji=8]="Kanji";E[E.ECI=7]="ECI";E[E.StructuredAppend=3]="StructuredAppend";let F="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:".split("");
-function ca(a,b){let c=[],d="";b=a.readBits([8,16,16][b]);for(let e=0;e<b;e++){let f=a.readBits(8);c.push(f)}try{d+=decodeURIComponent(c.map(e=>\`%\${("0"+e.toString(16)).substr(-2)}\`).join(""))}catch(e){}return{bytes:c,text:d}}
-function da(a,b){a=new ba(a);let c=9>=b?0:26>=b?1:2;for(b={text:"",bytes:[],chunks:[],version:b};4<=a.available();){var d=a.readBits(4);if(d===D.Terminator)return b;if(d===D.ECI)0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(7)}):0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(14)}):0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(21)}):b.chunks.push({type:B.ECI,assignmentNumber:-1});else if(d===D.Numeric){var e=a,f=[];d="";for(var g=
-e.readBits([10,12,14][c]);3<=g;){var h=e.readBits(10);if(1E3<=h)throw Error("Invalid numeric value above 999");var k=Math.floor(h/100),m=Math.floor(h/10)%10;h%=10;f.push(48+k,48+m,48+h);d+=k.toString()+m.toString()+h.toString();g-=3}if(2===g){g=e.readBits(7);if(100<=g)throw Error("Invalid numeric value above 99");e=Math.floor(g/10);g%=10;f.push(48+e,48+g);d+=e.toString()+g.toString()}else if(1===g){e=e.readBits(4);if(10<=e)throw Error("Invalid numeric value above 9");f.push(48+e);d+=e.toString()}b.text+=
-d;b.bytes.push(...f);b.chunks.push({type:B.Numeric,text:d})}else if(d===D.Alphanumeric){e=a;f=[];d="";for(g=e.readBits([9,11,13][c]);2<=g;)m=e.readBits(11),k=Math.floor(m/45),m%=45,f.push(F[k].charCodeAt(0),F[m].charCodeAt(0)),d+=F[k]+F[m],g-=2;1===g&&(e=e.readBits(6),f.push(F[e].charCodeAt(0)),d+=F[e]);b.text+=d;b.bytes.push(...f);b.chunks.push({type:B.Alphanumeric,text:d})}else if(d===D.Byte)d=ca(a,c),b.text+=d.text,b.bytes.push(...d.bytes),b.chunks.push({type:B.Byte,bytes:d.bytes,text:d.text});
-else if(d===D.Kanji){f=a;d=[];e=f.readBits([8,10,12][c]);for(g=0;g<e;g++)k=f.readBits(13),k=Math.floor(k/192)<<8|k%192,k=7936>k?k+33088:k+49472,d.push(k>>8,k&255);f=(new TextDecoder("shift-jis")).decode(Uint8Array.from(d));b.text+=f;b.bytes.push(...d);b.chunks.push({type:B.Kanji,bytes:d,text:f})}else d===D.StructuredAppend&&b.chunks.push({type:B.StructuredAppend,currentSequence:a.readBits(4),totalSequence:a.readBits(4),parity:a.readBits(8)})}if(0===a.available()||0===a.readBits(a.available()))return b}
-class G{constructor(a,b){if(0===b.length)throw Error("No coefficients.");this.field=a;let c=b.length;if(1<c&&0===b[0]){let d=1;for(;d<c&&0===b[d];)d++;if(d===c)this.coefficients=a.zero.coefficients;else for(this.coefficients=new Uint8ClampedArray(c-d),a=0;a<this.coefficients.length;a++)this.coefficients[a]=b[d+a]}else this.coefficients=b}degree(){return this.coefficients.length-1}isZero(){return 0===this.coefficients[0]}getCoefficient(a){return this.coefficients[this.coefficients.length-1-a]}addOrSubtract(a){if(this.isZero())return a;
-if(a.isZero())return this;let b=this.coefficients;a=a.coefficients;b.length>a.length&&([b,a]=[a,b]);let c=new Uint8ClampedArray(a.length),d=a.length-b.length;for(var e=0;e<d;e++)c[e]=a[e];for(e=d;e<a.length;e++)c[e]=b[e-d]^a[e];return new G(this.field,c)}multiply(a){if(0===a)return this.field.zero;if(1===a)return this;let b=this.coefficients.length,c=new Uint8ClampedArray(b);for(let d=0;d<b;d++)c[d]=this.field.multiply(this.coefficients[d],a);return new G(this.field,c)}multiplyPoly(a){if(this.isZero()||
-a.isZero())return this.field.zero;let b=this.coefficients,c=b.length;a=a.coefficients;let d=a.length,e=new Uint8ClampedArray(c+d-1);for(let f=0;f<c;f++){let g=b[f];for(let h=0;h<d;h++)e[f+h]=H(e[f+h],this.field.multiply(g,a[h]))}return new G(this.field,e)}multiplyByMonomial(a,b){if(0>a)throw Error("Invalid degree less than 0");if(0===b)return this.field.zero;let c=this.coefficients.length;a=new Uint8ClampedArray(c+a);for(let d=0;d<c;d++)a[d]=this.field.multiply(this.coefficients[d],b);return new G(this.field,
-a)}evaluateAt(a){let b=0;if(0===a)return this.getCoefficient(0);let c=this.coefficients.length;if(1===a)return this.coefficients.forEach(d=>{b^=d}),b;b=this.coefficients[0];for(let d=1;d<c;d++)b=H(this.field.multiply(a,b),this.coefficients[d]);return b}}function H(a,b){return a^b}
-class ea{constructor(a,b,c){this.primitive=a;this.size=b;this.generatorBase=c;this.expTable=Array(this.size);this.logTable=Array(this.size);a=1;for(b=0;b<this.size;b++)this.expTable[b]=a,a*=2,a>=this.size&&(a=(a^this.primitive)&this.size-1);for(a=0;a<this.size-1;a++)this.logTable[this.expTable[a]]=a;this.zero=new G(this,Uint8ClampedArray.from([0]));this.one=new G(this,Uint8ClampedArray.from([1]))}multiply(a,b){return 0===a||0===b?0:this.expTable[(this.logTable[a]+this.logTable[b])%(this.size-1)]}inverse(a){if(0===
-a)throw Error("Can't invert 0");return this.expTable[this.size-this.logTable[a]-1]}buildMonomial(a,b){if(0>a)throw Error("Invalid monomial degree less than 0");if(0===b)return this.zero;a=new Uint8ClampedArray(a+1);a[0]=b;return new G(this,a)}log(a){if(0===a)throw Error("Can't take log(0)");return this.logTable[a]}exp(a){return this.expTable[a]}}
-function fa(a,b,c,d){b.degree()<c.degree()&&([b,c]=[c,b]);let e=a.zero;for(var f=a.one;c.degree()>=d/2;){var g=b;let h=e;b=c;e=f;if(b.isZero())return null;c=g;f=a.zero;g=b.getCoefficient(b.degree());for(g=a.inverse(g);c.degree()>=b.degree()&&!c.isZero();){let k=c.degree()-b.degree(),m=a.multiply(c.getCoefficient(c.degree()),g);f=f.addOrSubtract(a.buildMonomial(k,m));c=c.addOrSubtract(b.multiplyByMonomial(k,m))}f=f.multiplyPoly(e).addOrSubtract(h);if(c.degree()>=b.degree())return null}d=f.getCoefficient(0);
-if(0===d)return null;a=a.inverse(d);return[f.multiply(a),c.multiply(a)]}
-function ha(a,b){let c=new Uint8ClampedArray(a.length);c.set(a);a=new ea(285,256,0);var d=new G(a,c),e=new Uint8ClampedArray(b),f=!1;for(var g=0;g<b;g++){var h=d.evaluateAt(a.exp(g+a.generatorBase));e[e.length-1-g]=h;0!==h&&(f=!0)}if(!f)return c;d=new G(a,e);d=fa(a,a.buildMonomial(b,1),d,b);if(null===d)return null;b=d[0];g=b.degree();if(1===g)b=[b.getCoefficient(1)];else{e=Array(g);f=0;for(h=1;h<a.size&&f<g;h++)0===b.evaluateAt(h)&&(e[f]=a.inverse(h),f++);b=f!==g?null:e}if(null==b)return null;e=d[1];
-f=b.length;d=Array(f);for(g=0;g<f;g++){h=a.inverse(b[g]);let k=1;for(let m=0;m<f;m++)g!==m&&(k=a.multiply(k,H(1,a.multiply(b[m],h))));d[g]=a.multiply(e.evaluateAt(h),a.inverse(k));0!==a.generatorBase&&(d[g]=a.multiply(d[g],h))}for(e=0;e<b.length;e++){f=c.length-1-a.log(b[e]);if(0>f)return null;c[f]^=d[e]}return c}
-let I=[{infoBits:null,versionNumber:1,alignmentPatternCenters:[],errorCorrectionLevels:[{ecCodewordsPerBlock:7,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:13,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:13}]},{ecCodewordsPerBlock:17,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:9}]}]},{infoBits:null,versionNumber:2,alignmentPatternCenters:[6,18],errorCorrectionLevels:[{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,
-dataCodewordsPerBlock:34}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:28}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]}]},{infoBits:null,versionNumber:3,alignmentPatternCenters:[6,22],errorCorrectionLevels:[{ecCodewordsPerBlock:15,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:55}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:18,
-ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:13}]}]},{infoBits:null,versionNumber:4,alignmentPatternCenters:[6,26],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:80}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:32}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:9}]}]},
-{infoBits:null,versionNumber:5,alignmentPatternCenters:[6,30],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:43}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:11},{numBlocks:2,dataCodewordsPerBlock:12}]}]},{infoBits:null,versionNumber:6,alignmentPatternCenters:[6,
-34],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:27}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:31892,versionNumber:7,alignmentPatternCenters:[6,22,38],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:78}]},{ecCodewordsPerBlock:18,
-ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:31}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:13},{numBlocks:1,dataCodewordsPerBlock:14}]}]},{infoBits:34236,versionNumber:8,alignmentPatternCenters:[6,24,42],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:97}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:38},
-{numBlocks:2,dataCodewordsPerBlock:39}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:18},{numBlocks:2,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:14},{numBlocks:2,dataCodewordsPerBlock:15}]}]},{infoBits:39577,versionNumber:9,alignmentPatternCenters:[6,26,46],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:36},
-{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:12},{numBlocks:4,dataCodewordsPerBlock:13}]}]},{infoBits:42195,versionNumber:10,alignmentPatternCenters:[6,28,50],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68},{numBlocks:2,dataCodewordsPerBlock:69}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,
-dataCodewordsPerBlock:43},{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]}]},{infoBits:48118,versionNumber:11,alignmentPatternCenters:[6,30,54],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:81}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,
-dataCodewordsPerBlock:50},{numBlocks:4,dataCodewordsPerBlock:51}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:22},{numBlocks:4,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:12},{numBlocks:8,dataCodewordsPerBlock:13}]}]},{infoBits:51042,versionNumber:12,alignmentPatternCenters:[6,32,58],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:92},{numBlocks:2,dataCodewordsPerBlock:93}]},
-{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:20},{numBlocks:6,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:55367,versionNumber:13,alignmentPatternCenters:[6,34,62],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:107}]},
-{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:37},{numBlocks:1,dataCodewordsPerBlock:38}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:20},{numBlocks:4,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:11},{numBlocks:4,dataCodewordsPerBlock:12}]}]},{infoBits:58893,versionNumber:14,alignmentPatternCenters:[6,26,46,66],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:115},
-{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:40},{numBlocks:5,dataCodewordsPerBlock:41}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:16},{numBlocks:5,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:5,dataCodewordsPerBlock:13}]}]},{infoBits:63784,versionNumber:15,alignmentPatternCenters:[6,26,48,70],errorCorrectionLevels:[{ecCodewordsPerBlock:22,
-ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:87},{numBlocks:1,dataCodewordsPerBlock:88}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:41},{numBlocks:5,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:7,dataCodewordsPerBlock:13}]}]},{infoBits:68472,versionNumber:16,alignmentPatternCenters:[6,26,50,
-74],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:98},{numBlocks:1,dataCodewordsPerBlock:99}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:70749,
-versionNumber:17,alignmentPatternCenters:[6,30,54,78],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:1,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22},{numBlocks:15,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:17,
-dataCodewordsPerBlock:15}]}]},{infoBits:76311,versionNumber:18,alignmentPatternCenters:[6,30,56,82],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:120},{numBlocks:1,dataCodewordsPerBlock:121}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:43},{numBlocks:4,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:1,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,
-dataCodewordsPerBlock:14},{numBlocks:19,dataCodewordsPerBlock:15}]}]},{infoBits:79154,versionNumber:19,alignmentPatternCenters:[6,30,58,86],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:113},{numBlocks:4,dataCodewordsPerBlock:114}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:44},{numBlocks:11,dataCodewordsPerBlock:45}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:21},{numBlocks:4,dataCodewordsPerBlock:22}]},
-{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:13},{numBlocks:16,dataCodewordsPerBlock:14}]}]},{infoBits:84390,versionNumber:20,alignmentPatternCenters:[6,34,62,90],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:41},{numBlocks:13,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},
-{numBlocks:5,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:15},{numBlocks:10,dataCodewordsPerBlock:16}]}]},{infoBits:87683,versionNumber:21,alignmentPatternCenters:[6,28,50,72,94],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:116},{numBlocks:4,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},
-{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:16},{numBlocks:6,dataCodewordsPerBlock:17}]}]},{infoBits:92361,versionNumber:22,alignmentPatternCenters:[6,26,50,74,98],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:111},{numBlocks:7,dataCodewordsPerBlock:112}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},
-{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:13}]}]},{infoBits:96236,versionNumber:23,alignmentPatternCenters:[6,30,54,74,102],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:121},{numBlocks:5,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:47},{numBlocks:14,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},
-{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:16,dataCodewordsPerBlock:15},{numBlocks:14,dataCodewordsPerBlock:16}]}]},{infoBits:102084,versionNumber:24,alignmentPatternCenters:[6,28,54,80,106],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:45},{numBlocks:14,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,
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diff --git a/qr-scanner-worker.min.js.map b/qr-scanner-worker.min.js.map
deleted file mode 100644
index f3bb693..0000000
--- a/qr-scanner-worker.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"qr-scanner-worker.min.js","sources":["node_modules/jsqr-es6/src/BitMatrix.ts","node_modules/jsqr-es6/src/binarizer/index.ts","node_modules/jsqr-es6/src/decoder/decodeData/BitStream.ts","node_modules/jsqr-es6/src/decoder/decodeData/index.ts","node_modules/jsqr-es6/src/decoder/reedsolomon/GenericGFPoly.ts","node_modules/jsqr-es6/src/decoder/reedsolomon/GenericGF.ts","node_modules/jsqr-es6/src/decoder/reedsolomon/index.ts","node_modules/jsqr-es6/src/decoder/version.ts","node_modules/jsqr-es6/src/decoder/decoder.ts","node_modules/jsqr-es6/src/extractor/index.ts","node_modules/jsqr-es6/src/locator/index.ts","node_modules/jsqr-es6/src/index.ts","src/worker.ts"],"sourcesContent":["export class BitMatrix {\n  public static createEmpty(width: number, height: number) {\n    return new BitMatrix(new Uint8ClampedArray(width * height), width);\n  }\n\n  public width: number;\n  public height: number;\n  private data: Uint8ClampedArray;\n\n  constructor(data: Uint8ClampedArray, width: number) {\n    this.width = width;\n    this.height = data.length / width;\n    this.data = data;\n  }\n\n  public get(x: number, y: number): boolean {\n    if (x < 0 || x >= this.width || y < 0 || y >= this.height) {\n      return false;\n    }\n    return !!this.data[y * this.width + x];\n  }\n\n  public set(x: number, y: number, v: boolean) {\n    this.data[y * this.width + x] = v ? 1 : 0;\n  }\n\n  public setRegion(left: number, top: number, width: number, height: number, v: boolean) {\n    for (let y = top; y < top + height; y++) {\n      for (let x = left; x < left + width; x++) {\n        this.set(x, y, !!v);\n      }\n    }\n  }\n}\n","import {BitMatrix} from \"../BitMatrix\";\nimport {GreyscaleWeights} from \"../index\";\n\nconst REGION_SIZE = 8;\nconst MIN_DYNAMIC_RANGE = 24;\n\nfunction numBetween(value: number, min: number, max: number): number {\n  return value < min ? min : value > max ? max : value;\n}\n\n// Like BitMatrix but accepts arbitry Uint8 values\nclass Matrix {\n  private data: Uint8ClampedArray;\n  private width: number;\n  constructor(width: number, height: number, buffer?: Uint8ClampedArray) {\n    this.width = width;\n    const bufferSize = width * height;\n    if (buffer && buffer.length !== bufferSize) {\n      throw new Error(\"Wrong buffer size\");\n    }\n    this.data = buffer || new Uint8ClampedArray(bufferSize);\n  }\n  public get(x: number, y: number) {\n    return this.data[y * this.width + x];\n  }\n  public set(x: number, y: number, value: number) {\n    this.data[y * this.width + x] = value;\n  }\n}\n\nexport function binarize(data: Uint8ClampedArray, width: number, height: number, returnInverted: boolean,\n                         greyscaleWeights: GreyscaleWeights, canOverwriteImage: boolean) {\n  const pixelCount = width * height;\n  if (data.length !== pixelCount * 4) {\n    throw new Error(\"Malformed data passed to binarizer.\");\n  }\n  // assign the greyscale and binary image within the rgba buffer as the rgba image will not be needed after conversion\n  let bufferOffset = 0;\n  // Convert image to greyscale\n  let greyscaleBuffer: Uint8ClampedArray;\n  if (canOverwriteImage) {\n    greyscaleBuffer = new Uint8ClampedArray(data.buffer, bufferOffset, pixelCount);\n    bufferOffset += pixelCount;\n  }\n  const greyscalePixels = new Matrix(width, height, greyscaleBuffer);\n  if (greyscaleWeights.useIntegerApproximation) {\n    for (let y = 0; y < height; y++) {\n      for (let x = 0; x < width; x++) {\n        const pixelPosition = (y * width + x) * 4;\n        const r = data[pixelPosition];\n        const g = data[pixelPosition + 1];\n        const b = data[pixelPosition + 2];\n        greyscalePixels.set(x, y,\n          // tslint:disable-next-line no-bitwise\n          (greyscaleWeights.red * r + greyscaleWeights.green * g + greyscaleWeights.blue * b + 128) >> 8);\n      }\n    }\n  } else {\n    for (let y = 0; y < height; y++) {\n      for (let x = 0; x < width; x++) {\n        const pixelPosition = (y * width + x) * 4;\n        const r = data[pixelPosition];\n        const g = data[pixelPosition + 1];\n        const b = data[pixelPosition + 2];\n        greyscalePixels.set(x, y,\n          greyscaleWeights.red * r + greyscaleWeights.green * g + greyscaleWeights.blue * b);\n      }\n    }\n  }\n  const horizontalRegionCount = Math.ceil(width / REGION_SIZE);\n  const verticalRegionCount = Math.ceil(height / REGION_SIZE);\n  const blackPointsCount = horizontalRegionCount * verticalRegionCount;\n\n  let blackPointsBuffer: Uint8ClampedArray;\n  if (canOverwriteImage) {\n    blackPointsBuffer = new Uint8ClampedArray(data.buffer, bufferOffset, blackPointsCount);\n    bufferOffset += blackPointsCount;\n  }\n  const blackPoints = new Matrix(horizontalRegionCount, verticalRegionCount, blackPointsBuffer);\n  for (let verticalRegion = 0; verticalRegion < verticalRegionCount; verticalRegion++) {\n    for (let hortizontalRegion = 0; hortizontalRegion < horizontalRegionCount; hortizontalRegion++) {\n      let min = Infinity;\n      let max = 0;\n      for (let y = 0; y < REGION_SIZE; y++) {\n        for (let x = 0; x < REGION_SIZE; x++) {\n          const pixelLumosity =\n            greyscalePixels.get(hortizontalRegion * REGION_SIZE + x, verticalRegion * REGION_SIZE + y);\n          min = Math.min(min, pixelLumosity);\n          max = Math.max(max, pixelLumosity);\n        }\n      }\n      // We could also compute the real average of all pixels but following the assumption that the qr code consists\n      // of bright and dark pixels and essentially not much in between, by (min + max)/2 we make the cut really between\n      // those two classes. If using the average over all pixel in a block of mostly bright pixels and few dark pixels,\n      // the avg would tend to the bright side and darker bright pixels could be interpreted as dark.\n      let average = (min + max) / 2;\n      // Small bias towards black by moving the threshold up. We do this, as in the finder patterns white holes tend\n      // to appear which makes them undetectable.\n      const blackBias = 1.11;\n      average = Math.min(255, average * blackBias);\n      if (max - min <= MIN_DYNAMIC_RANGE) {\n        // If variation within the block is low, assume this is a block with only light or only\n        // dark pixels. In that case we do not want to use the average, as it would divide this\n        // low contrast area into black and white pixels, essentially creating data out of noise.\n        //\n        // Default the blackpoint for these blocks to be half the min - effectively white them out\n        average = min / 2;\n\n        if (verticalRegion > 0 && hortizontalRegion > 0) {\n          // Correct the \"white background\" assumption for blocks that have neighbors by comparing\n          // the pixels in this block to the previously calculated black points. This is based on\n          // the fact that dark barcode symbology is always surrounded by some amount of light\n          // background for which reasonable black point estimates were made. The bp estimated at\n          // the boundaries is used for the interior.\n\n          // The (min < bp) is arbitrary but works better than other heuristics that were tried.\n          const averageNeighborBlackPoint = (\n            blackPoints.get(hortizontalRegion, verticalRegion - 1) +\n            (2 * blackPoints.get(hortizontalRegion - 1, verticalRegion)) +\n            blackPoints.get(hortizontalRegion - 1, verticalRegion - 1)\n          ) / 4;\n          if (min < averageNeighborBlackPoint) {\n            average = averageNeighborBlackPoint; // no need to apply black bias as already applied to neighbors\n          }\n        }\n      }\n      blackPoints.set(hortizontalRegion, verticalRegion, average);\n    }\n  }\n\n  let binarized: BitMatrix;\n  if (canOverwriteImage) {\n    const binarizedBuffer = new Uint8ClampedArray(data.buffer, bufferOffset, pixelCount);\n    bufferOffset += pixelCount;\n    binarized = new BitMatrix(binarizedBuffer, width);\n  } else {\n    binarized = BitMatrix.createEmpty(width, height);\n  }\n\n  let inverted: BitMatrix = null;\n  if (returnInverted) {\n    if (canOverwriteImage) {\n      const invertedBuffer = new Uint8ClampedArray(data.buffer, bufferOffset, pixelCount);\n      inverted = new BitMatrix(invertedBuffer, width);\n    } else {\n      inverted = BitMatrix.createEmpty(width, height);\n    }\n  }\n\n  for (let verticalRegion = 0; verticalRegion < verticalRegionCount; verticalRegion++) {\n    for (let hortizontalRegion = 0; hortizontalRegion < horizontalRegionCount; hortizontalRegion++) {\n      const left = numBetween(hortizontalRegion, 2, horizontalRegionCount - 3);\n      const top = numBetween(verticalRegion, 2, verticalRegionCount - 3);\n      let sum = 0;\n      for (let xRegion = -2; xRegion <= 2; xRegion++) {\n        for (let yRegion = -2; yRegion <= 2; yRegion++) {\n          sum += blackPoints.get(left + xRegion, top + yRegion);\n        }\n      }\n      const threshold = sum / 25;\n      for (let xRegion = 0; xRegion < REGION_SIZE; xRegion++) {\n        for (let yRegion = 0; yRegion < REGION_SIZE; yRegion++) {\n          const x = hortizontalRegion * REGION_SIZE + xRegion;\n          const y = verticalRegion * REGION_SIZE + yRegion;\n          const lum = greyscalePixels.get(x, y);\n          binarized.set(x, y, lum <= threshold);\n          if (returnInverted) {\n            inverted.set(x, y, !(lum <= threshold));\n          }\n        }\n      }\n    }\n  }\n  if (returnInverted) {\n    return { binarized, inverted };\n  }\n  return { binarized };\n}\n","// tslint:disable:no-bitwise\n\nexport class BitStream {\n  private bytes: Uint8ClampedArray;\n  private byteOffset: number = 0;\n  private bitOffset: number = 0;\n\n  constructor(bytes: Uint8ClampedArray) {\n    this.bytes = bytes;\n  }\n\n  public readBits(numBits: number): number {\n    if (numBits < 1 || numBits > 32 || numBits > this.available()) {\n      throw new Error(\"Cannot read \" + numBits.toString() + \" bits\");\n    }\n\n    let result = 0;\n    // First, read remainder from current byte\n    if (this.bitOffset > 0) {\n      const bitsLeft = 8 - this.bitOffset;\n      const toRead = numBits < bitsLeft ? numBits : bitsLeft;\n      const bitsToNotRead = bitsLeft - toRead;\n      const mask = (0xFF >> (8 - toRead)) << bitsToNotRead;\n      result = (this.bytes[this.byteOffset] & mask) >> bitsToNotRead;\n      numBits -= toRead;\n      this.bitOffset += toRead;\n      if (this.bitOffset === 8) {\n        this.bitOffset = 0;\n        this.byteOffset++;\n      }\n    }\n\n    // Next read whole bytes\n    if (numBits > 0) {\n      while (numBits >= 8) {\n        result = (result << 8) | (this.bytes[this.byteOffset] & 0xFF);\n        this.byteOffset++;\n        numBits -= 8;\n      }\n\n      // Finally read a partial byte\n      if (numBits > 0) {\n        const bitsToNotRead = 8 - numBits;\n        const mask = (0xFF >> bitsToNotRead) << bitsToNotRead;\n        result = (result << numBits) | ((this.bytes[this.byteOffset] & mask) >> bitsToNotRead);\n        this.bitOffset += numBits;\n      }\n    }\n    return result;\n  }\n\n  public available(): number {\n    return 8 * (this.bytes.length - this.byteOffset) - this.bitOffset;\n  }\n}\n","// tslint:disable:no-bitwise\nimport { BitStream } from \"./BitStream\";\n\nexport interface Chunk {\n  type: Mode;\n  text: string;\n}\n\nexport interface ByteChunk {\n  type: Mode.Byte | Mode.Kanji;\n  bytes: number[];\n}\n\nexport interface ECIChunk {\n  type: Mode.ECI;\n  assignmentNumber: number;\n}\n\nexport interface StructuredAppend {\n  type: Mode.StructuredAppend;\n  currentSequence: number;\n  totalSequence: number;\n  parity: number;\n}\n\nexport type Chunks = Array<Chunk | ByteChunk | ECIChunk | StructuredAppend>;\n\nexport interface DecodedQR {\n  text: string;\n  bytes: number[];\n  chunks: Chunks;\n  version: number;\n}\n\nexport enum Mode {\n  Numeric = \"numeric\",\n  Alphanumeric = \"alphanumeric\",\n  Byte = \"byte\",\n  Kanji = \"kanji\",\n  ECI = \"eci\",\n  StructuredAppend = \"structuredappend\",\n}\n\nenum ModeByte {\n  Terminator = 0x0,\n  Numeric = 0x1,\n  Alphanumeric = 0x2,\n  Byte = 0x4,\n  Kanji = 0x8,\n  ECI = 0x7,\n  StructuredAppend = 0x3,\n  // FNC1FirstPosition = 0x5,\n  // FNC1SecondPosition = 0x9,\n}\n\nfunction decodeNumeric(stream: BitStream, size: number) {\n  const bytes: number[] = [];\n  let text = \"\";\n\n  const characterCountSize = [10, 12, 14][size];\n  let length = stream.readBits(characterCountSize);\n  // Read digits in groups of 3\n  while (length >= 3) {\n    const num = stream.readBits(10);\n    if (num >= 1000) {\n      throw new Error(\"Invalid numeric value above 999\");\n    }\n\n    const a = Math.floor(num / 100);\n    const b = Math.floor(num / 10) % 10;\n    const c = num % 10;\n\n    bytes.push(48 + a, 48 + b, 48 + c);\n    text += a.toString() + b.toString() + c.toString();\n    length -= 3;\n  }\n\n  // If the number of digits aren't a multiple of 3, the remaining digits are special cased.\n  if (length === 2) {\n    const num = stream.readBits(7);\n    if (num >= 100) {\n      throw new Error(\"Invalid numeric value above 99\");\n    }\n\n    const a = Math.floor(num / 10);\n    const b = num % 10;\n\n    bytes.push(48 + a, 48 + b);\n    text += a.toString() + b.toString();\n  } else if (length === 1) {\n    const num = stream.readBits(4);\n    if (num >= 10) {\n      throw new Error(\"Invalid numeric value above 9\");\n    }\n\n    bytes.push(48 + num);\n    text += num.toString();\n  }\n\n  return { bytes, text };\n}\n\nconst AlphanumericCharacterCodes = [\n  \"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\",\n  \"9\", \"A\", \"B\", \"C\", \"D\", \"E\", \"F\", \"G\", \"H\",\n  \"I\", \"J\", \"K\", \"L\", \"M\", \"N\", \"O\", \"P\", \"Q\",\n  \"R\", \"S\", \"T\", \"U\", \"V\", \"W\", \"X\", \"Y\", \"Z\",\n  \" \", \"$\", \"%\", \"*\", \"+\", \"-\", \".\", \"/\", \":\",\n];\n\nfunction decodeAlphanumeric(stream: BitStream, size: number) {\n  const bytes: number[] = [];\n  let text = \"\";\n\n  const characterCountSize = [9, 11, 13][size];\n  let length = stream.readBits(characterCountSize);\n  while (length >= 2) {\n    const v = stream.readBits(11);\n\n    const a = Math.floor(v / 45);\n    const b = v % 45;\n\n    bytes.push(AlphanumericCharacterCodes[a].charCodeAt(0), AlphanumericCharacterCodes[b].charCodeAt(0));\n    text += AlphanumericCharacterCodes[a] + AlphanumericCharacterCodes[b];\n    length -= 2;\n  }\n\n  if (length === 1) {\n    const a = stream.readBits(6);\n    bytes.push(AlphanumericCharacterCodes[a].charCodeAt(0));\n    text += AlphanumericCharacterCodes[a];\n  }\n\n  return { bytes, text };\n}\n\nfunction decodeByte(stream: BitStream, size: number) {\n  const bytes: number[] = [];\n  let text = \"\";\n\n  const characterCountSize = [8, 16, 16][size];\n  const length = stream.readBits(characterCountSize);\n  for (let i = 0; i < length; i++) {\n    const b = stream.readBits(8);\n    bytes.push(b);\n  }\n  try {\n    text += decodeURIComponent(bytes.map(b => `%${(\"0\" + b.toString(16)).substr(-2)}`).join(\"\"));\n  } catch {\n    // failed to decode\n  }\n\n  return { bytes, text };\n}\n\nfunction decodeKanji(stream: BitStream, size: number) {\n  const bytes: number[] = [];\n\n  const characterCountSize = [8, 10, 12][size];\n  const length = stream.readBits(characterCountSize);\n  for (let i = 0; i < length; i++) {\n    const k = stream.readBits(13);\n\n    let c = (Math.floor(k / 0xC0) << 8) | (k % 0xC0);\n    if (c < 0x1F00) {\n      c += 0x8140;\n    } else {\n      c += 0xC140;\n    }\n\n    bytes.push(c >> 8, c & 0xFF);\n  }\n\n  const text = new TextDecoder(\"shift-jis\").decode(Uint8Array.from(bytes));\n  return { bytes, text };\n}\n\nexport function decode(data: Uint8ClampedArray, version: number): DecodedQR {\n  const stream = new BitStream(data);\n\n  // There are 3 'sizes' based on the version. 1-9 is small (0), 10-26 is medium (1) and 27-40 is large (2).\n  const size = version <= 9 ? 0 : version <= 26 ? 1 : 2;\n\n  const result: DecodedQR = {\n    text: \"\",\n    bytes: [],\n    chunks: [],\n    version,\n  };\n\n  while (stream.available() >= 4) {\n    const mode = stream.readBits(4);\n    if (mode === ModeByte.Terminator) {\n      return result;\n    } else if (mode === ModeByte.ECI) {\n      if (stream.readBits(1) === 0) {\n        result.chunks.push({\n          type: Mode.ECI,\n          assignmentNumber: stream.readBits(7),\n        });\n      } else if (stream.readBits(1) === 0) {\n        result.chunks.push({\n          type: Mode.ECI,\n          assignmentNumber: stream.readBits(14),\n        });\n      } else if (stream.readBits(1) === 0) {\n        result.chunks.push({\n          type: Mode.ECI,\n          assignmentNumber: stream.readBits(21),\n        });\n      } else {\n        // ECI data seems corrupted\n        result.chunks.push({\n          type: Mode.ECI,\n          assignmentNumber: -1,\n        });\n      }\n    } else if (mode === ModeByte.Numeric) {\n      const numericResult = decodeNumeric(stream, size);\n      result.text += numericResult.text;\n      result.bytes.push(...numericResult.bytes);\n      result.chunks.push({\n        type: Mode.Numeric,\n        text: numericResult.text,\n      });\n    } else if (mode === ModeByte.Alphanumeric) {\n      const alphanumericResult = decodeAlphanumeric(stream, size);\n      result.text += alphanumericResult.text;\n      result.bytes.push(...alphanumericResult.bytes);\n      result.chunks.push({\n        type: Mode.Alphanumeric,\n        text: alphanumericResult.text,\n      });\n    } else if (mode === ModeByte.Byte) {\n      const byteResult = decodeByte(stream, size);\n      result.text += byteResult.text;\n      result.bytes.push(...byteResult.bytes);\n      result.chunks.push({\n        type: Mode.Byte,\n        bytes: byteResult.bytes,\n        text: byteResult.text,\n      });\n    } else if (mode === ModeByte.Kanji) {\n      const kanjiResult = decodeKanji(stream, size);\n      result.text += kanjiResult.text;\n      result.bytes.push(...kanjiResult.bytes);\n      result.chunks.push({\n        type: Mode.Kanji,\n        bytes: kanjiResult.bytes,\n        text: kanjiResult.text,\n      });\n    } else if (mode === ModeByte.StructuredAppend) {\n      result.chunks.push({\n        type: Mode.StructuredAppend,\n        currentSequence: stream.readBits(4),\n        totalSequence: stream.readBits(4),\n        parity: stream.readBits(8),\n      });\n    }\n  }\n\n  // If there is no data left, or the remaining bits are all 0, then that counts as a termination marker\n  if (stream.available() === 0 || stream.readBits(stream.available()) === 0) {\n    return result;\n  }\n}\n","import GenericGF, { addOrSubtractGF } from \"./GenericGF\";\n\nexport default class GenericGFPoly {\n  private field: GenericGF;\n  private coefficients: Uint8ClampedArray;\n\n  constructor(field: GenericGF, coefficients: Uint8ClampedArray) {\n    if (coefficients.length === 0) {\n      throw new Error(\"No coefficients.\");\n    }\n    this.field = field;\n    const coefficientsLength = coefficients.length;\n    if (coefficientsLength > 1 && coefficients[0] === 0) {\n      // Leading term must be non-zero for anything except the constant polynomial \"0\"\n      let firstNonZero = 1;\n      while (firstNonZero < coefficientsLength && coefficients[firstNonZero] === 0) {\n        firstNonZero++;\n      }\n      if (firstNonZero === coefficientsLength) {\n        this.coefficients = field.zero.coefficients;\n      } else {\n        this.coefficients = new Uint8ClampedArray(coefficientsLength - firstNonZero);\n        for (let i = 0; i < this.coefficients.length; i++) {\n          this.coefficients[i] = coefficients[firstNonZero + i];\n        }\n      }\n    } else {\n      this.coefficients = coefficients;\n    }\n  }\n\n  public degree() {\n    return this.coefficients.length - 1;\n  }\n\n  public isZero() {\n    return this.coefficients[0] === 0;\n  }\n\n  public getCoefficient(degree: number) {\n    return this.coefficients[this.coefficients.length - 1 - degree];\n  }\n\n  public addOrSubtract(other: GenericGFPoly) {\n    if (this.isZero()) {\n      return other;\n    }\n    if (other.isZero()) {\n      return this;\n    }\n\n    let smallerCoefficients = this.coefficients;\n    let largerCoefficients = other.coefficients;\n    if (smallerCoefficients.length > largerCoefficients.length) {\n      [smallerCoefficients, largerCoefficients] = [largerCoefficients, smallerCoefficients];\n    }\n    const sumDiff = new Uint8ClampedArray(largerCoefficients.length);\n    const lengthDiff = largerCoefficients.length - smallerCoefficients.length;\n    for (let i = 0; i < lengthDiff; i++) {\n      sumDiff[i] = largerCoefficients[i];\n    }\n\n    for (let i = lengthDiff; i < largerCoefficients.length; i++) {\n      sumDiff[i] = addOrSubtractGF(smallerCoefficients[i - lengthDiff], largerCoefficients[i]);\n    }\n\n    return new GenericGFPoly(this.field, sumDiff);\n  }\n\n  public multiply(scalar: number) {\n    if (scalar === 0) {\n      return this.field.zero;\n    }\n    if (scalar === 1) {\n      return this;\n    }\n    const size = this.coefficients.length;\n    const product = new Uint8ClampedArray(size);\n    for (let i = 0; i < size; i++) {\n      product[i] = this.field.multiply(this.coefficients[i], scalar);\n    }\n\n    return new GenericGFPoly(this.field, product);\n  }\n\n  public multiplyPoly(other: GenericGFPoly): GenericGFPoly {\n    if (this.isZero() || other.isZero()) {\n      return this.field.zero;\n    }\n    const aCoefficients = this.coefficients;\n    const aLength = aCoefficients.length;\n    const bCoefficients = other.coefficients;\n    const bLength = bCoefficients.length;\n    const product = new Uint8ClampedArray(aLength + bLength - 1);\n    for (let i = 0; i < aLength; i++) {\n      const aCoeff = aCoefficients[i];\n      for (let j = 0; j < bLength; j++) {\n        product[i + j] = addOrSubtractGF(product[i + j],\n          this.field.multiply(aCoeff, bCoefficients[j]));\n      }\n    }\n    return new GenericGFPoly(this.field, product);\n  }\n\n  public multiplyByMonomial(degree: number, coefficient: number) {\n    if (degree < 0) {\n      throw new Error(\"Invalid degree less than 0\");\n    }\n    if (coefficient === 0) {\n      return this.field.zero;\n    }\n    const size = this.coefficients.length;\n    const product = new Uint8ClampedArray(size + degree);\n    for (let i = 0; i < size; i++) {\n      product[i] = this.field.multiply(this.coefficients[i], coefficient);\n    }\n    return new GenericGFPoly(this.field, product);\n  }\n\n  public evaluateAt(a: number) {\n    let result = 0;\n    if (a === 0) {\n      // Just return the x^0 coefficient\n      return this.getCoefficient(0);\n    }\n    const size = this.coefficients.length;\n    if (a === 1) {\n      // Just the sum of the coefficients\n      this.coefficients.forEach((coefficient) => {\n        result = addOrSubtractGF(result, coefficient);\n      });\n      return result;\n    }\n    result = this.coefficients[0];\n    for (let i = 1; i < size; i++) {\n      result = addOrSubtractGF(this.field.multiply(a, result), this.coefficients[i]);\n    }\n    return result;\n  }\n}\n","import GenericGFPoly from \"./GenericGFPoly\";\n\nexport function addOrSubtractGF(a: number, b: number) {\n  return a ^ b; // tslint:disable-line:no-bitwise\n}\n\nexport default class GenericGF {\n  public primitive: number;\n  public size: number;\n  public generatorBase: number;\n  public zero: GenericGFPoly;\n  public one: GenericGFPoly;\n\n  private expTable: number[];\n  private logTable: number[];\n\n  constructor(primitive: number, size: number, genBase: number) {\n    this.primitive = primitive;\n    this.size = size;\n    this.generatorBase = genBase;\n    this.expTable = new Array(this.size);\n    this.logTable = new Array(this.size);\n\n    let x = 1;\n    for (let i = 0; i < this.size; i++) {\n      this.expTable[i] = x;\n      x = x * 2;\n      if (x >= this.size) {\n        x = (x ^ this.primitive) & (this.size - 1); // tslint:disable-line:no-bitwise\n      }\n    }\n\n    for (let i = 0; i < this.size - 1; i++) {\n      this.logTable[this.expTable[i]] = i;\n    }\n    this.zero = new GenericGFPoly(this, Uint8ClampedArray.from([0]));\n    this.one = new GenericGFPoly(this, Uint8ClampedArray.from([1]));\n  }\n\n  public multiply(a: number, b: number) {\n    if (a === 0 || b === 0) {\n      return 0;\n    }\n    return this.expTable[(this.logTable[a] + this.logTable[b]) % (this.size - 1)];\n  }\n\n  public inverse(a: number) {\n    if (a === 0) {\n      throw new Error(\"Can't invert 0\");\n    }\n    return this.expTable[this.size - this.logTable[a] - 1];\n  }\n\n  public buildMonomial(degree: number, coefficient: number): GenericGFPoly {\n    if (degree < 0) {\n      throw new Error(\"Invalid monomial degree less than 0\");\n    }\n    if (coefficient === 0) {\n      return this.zero;\n    }\n    const coefficients = new Uint8ClampedArray(degree + 1);\n    coefficients[0] = coefficient;\n    return new GenericGFPoly(this, coefficients);\n  }\n\n  public log(a: number) {\n    if (a === 0) {\n      throw new Error(\"Can't take log(0)\");\n    }\n    return this.logTable[a];\n  }\n\n  public exp(a: number) {\n    return this.expTable[a];\n  }\n}\n","import GenericGF, { addOrSubtractGF } from \"./GenericGF\";\nimport GenericGFPoly from \"./GenericGFPoly\";\n\nfunction runEuclideanAlgorithm(field: GenericGF, a: GenericGFPoly, b: GenericGFPoly, R: number): GenericGFPoly[] {\n  // Assume a's degree is >= b's\n  if (a.degree() < b.degree()) {\n    [a, b] = [b, a];\n  }\n\n  let rLast = a;\n  let r = b;\n  let tLast = field.zero;\n  let t = field.one;\n\n  // Run Euclidean algorithm until r's degree is less than R/2\n  while (r.degree() >= R / 2) {\n    const rLastLast = rLast;\n    const tLastLast = tLast;\n    rLast = r;\n    tLast = t;\n\n    // Divide rLastLast by rLast, with quotient in q and remainder in r\n    if (rLast.isZero()) {\n      // Euclidean algorithm already terminated?\n      return null;\n    }\n    r = rLastLast;\n    let q = field.zero;\n    const denominatorLeadingTerm = rLast.getCoefficient(rLast.degree());\n    const dltInverse = field.inverse(denominatorLeadingTerm);\n    while (r.degree() >= rLast.degree() && !r.isZero()) {\n      const degreeDiff = r.degree() - rLast.degree();\n      const scale = field.multiply(r.getCoefficient(r.degree()), dltInverse);\n      q = q.addOrSubtract(field.buildMonomial(degreeDiff, scale));\n      r = r.addOrSubtract(rLast.multiplyByMonomial(degreeDiff, scale));\n    }\n\n    t = q.multiplyPoly(tLast).addOrSubtract(tLastLast);\n\n    if (r.degree() >= rLast.degree()) {\n      return null;\n    }\n  }\n\n  const sigmaTildeAtZero = t.getCoefficient(0);\n  if (sigmaTildeAtZero === 0) {\n    return null;\n  }\n\n  const inverse = field.inverse(sigmaTildeAtZero);\n  return [t.multiply(inverse), r.multiply(inverse)];\n}\n\nfunction findErrorLocations(field: GenericGF, errorLocator: GenericGFPoly): number[] {\n  // This is a direct application of Chien's search\n  const numErrors = errorLocator.degree();\n  if (numErrors === 1) {\n    return [errorLocator.getCoefficient(1)];\n  }\n  const result: number[] = new Array(numErrors);\n  let errorCount = 0;\n  for (let i = 1; i < field.size && errorCount < numErrors; i++) {\n    if (errorLocator.evaluateAt(i) === 0) {\n      result[errorCount] = field.inverse(i);\n      errorCount++;\n    }\n  }\n  if (errorCount !== numErrors) {\n    return null;\n  }\n  return result;\n}\n\nfunction findErrorMagnitudes(field: GenericGF, errorEvaluator: GenericGFPoly, errorLocations: number[]): number[] {\n  // This is directly applying Forney's Formula\n  const s = errorLocations.length;\n  const result: number[] = new Array(s);\n  for (let i = 0; i < s; i++) {\n    const xiInverse = field.inverse(errorLocations[i]);\n    let denominator = 1;\n    for (let j = 0; j < s; j++) {\n      if (i !== j) {\n        denominator = field.multiply(denominator, addOrSubtractGF(1, field.multiply(errorLocations[j], xiInverse)));\n      }\n    }\n    result[i] = field.multiply(errorEvaluator.evaluateAt(xiInverse), field.inverse(denominator));\n    if (field.generatorBase !== 0) {\n      result[i] = field.multiply(result[i], xiInverse);\n    }\n  }\n  return result;\n}\n\nexport function decode(bytes: number[], twoS: number) {\n  const outputBytes = new Uint8ClampedArray(bytes.length);\n  outputBytes.set(bytes);\n\n  const field = new GenericGF(0x011D, 256, 0); // x^8 + x^4 + x^3 + x^2 + 1\n  const poly = new GenericGFPoly(field, outputBytes);\n\n  const syndromeCoefficients = new Uint8ClampedArray(twoS);\n  let error = false;\n  for (let s = 0; s < twoS; s++) {\n    const evaluation = poly.evaluateAt(field.exp(s + field.generatorBase));\n    syndromeCoefficients[syndromeCoefficients.length - 1 - s] = evaluation;\n    if (evaluation !== 0) {\n      error = true;\n    }\n  }\n  if (!error) {\n    return outputBytes;\n  }\n\n  const syndrome = new GenericGFPoly(field, syndromeCoefficients);\n\n  const sigmaOmega = runEuclideanAlgorithm(field, field.buildMonomial(twoS, 1), syndrome, twoS);\n  if (sigmaOmega === null) {\n    return null;\n  }\n\n  const errorLocations = findErrorLocations(field, sigmaOmega[0]);\n  if (errorLocations == null) {\n    return null;\n  }\n\n  const errorMagnitudes = findErrorMagnitudes(field, sigmaOmega[1], errorLocations);\n  for (let i = 0; i < errorLocations.length; i++) {\n    const position = outputBytes.length - 1 - field.log(errorLocations[i]);\n    if (position < 0) {\n      return null;\n    }\n    outputBytes[position] = addOrSubtractGF(outputBytes[position], errorMagnitudes[i]);\n  }\n\n  return outputBytes;\n}\n","export interface Version {\n  infoBits: number;\n  versionNumber: number;\n  alignmentPatternCenters: number[];\n  errorCorrectionLevels: Array<{\n    ecCodewordsPerBlock: number;\n    ecBlocks: Array<{\n      numBlocks: number;\n      dataCodewordsPerBlock: number;\n    }>\n  }>;\n}\n\nexport const VERSIONS: Version[] = [\n  {\n    infoBits: null,\n    versionNumber: 1,\n    alignmentPatternCenters: [],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 7,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 19 }],\n      },\n      {\n        ecCodewordsPerBlock: 10,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 16 }],\n      },\n      {\n        ecCodewordsPerBlock: 13,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 13 }],\n      },\n      {\n        ecCodewordsPerBlock: 17,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 9 }],\n      },\n    ],\n  },\n  {\n    infoBits: null,\n    versionNumber: 2,\n    alignmentPatternCenters: [6, 18],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 10,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 34 }],\n      },\n      {\n        ecCodewordsPerBlock: 16,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 28 }],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 22 }],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 16 }],\n      },\n    ],\n  },\n  {\n    infoBits: null,\n    versionNumber: 3,\n    alignmentPatternCenters: [6, 22],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 15,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 55 }],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 44 }],\n      },\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 17 }],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 13 }],\n      },\n    ],\n  },\n  {\n    infoBits: null,\n    versionNumber: 4,\n    alignmentPatternCenters: [6, 26],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 20,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 80 }],\n      },\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 32 }],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 24 }],\n      },\n      {\n        ecCodewordsPerBlock: 16,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 9 }],\n      },\n    ],\n  },\n  {\n    infoBits: null,\n    versionNumber: 5,\n    alignmentPatternCenters: [6, 30],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [{ numBlocks: 1, dataCodewordsPerBlock: 108 }],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 43 }],\n      },\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 15 },\n          { numBlocks: 2, dataCodewordsPerBlock: 16 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 11 },\n          { numBlocks: 2, dataCodewordsPerBlock: 12 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: null,\n    versionNumber: 6,\n    alignmentPatternCenters: [6, 34],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 68 }],\n      },\n      {\n        ecCodewordsPerBlock: 16,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 27 }],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 19 }],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 15 }],\n      },\n    ],\n  },\n  {\n    infoBits: 0x07C94,\n    versionNumber: 7,\n    alignmentPatternCenters: [6, 22, 38],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 20,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 78 }],\n      },\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 31 }],\n      },\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 14 },\n          { numBlocks: 4, dataCodewordsPerBlock: 15 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 13 },\n          { numBlocks: 1, dataCodewordsPerBlock: 14 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x085BC,\n    versionNumber: 8,\n    alignmentPatternCenters: [6, 24, 42],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 97 }],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 38 },\n          { numBlocks: 2, dataCodewordsPerBlock: 39 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 18 },\n          { numBlocks: 2, dataCodewordsPerBlock: 19 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 14 },\n          { numBlocks: 2, dataCodewordsPerBlock: 15 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x09A99,\n    versionNumber: 9,\n    alignmentPatternCenters: [6, 26, 46],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [{ numBlocks: 2, dataCodewordsPerBlock: 116 }],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 36 },\n          { numBlocks: 2, dataCodewordsPerBlock: 37 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 20,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 16 },\n          { numBlocks: 4, dataCodewordsPerBlock: 17 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 12 },\n          { numBlocks: 4, dataCodewordsPerBlock: 13 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0A4D3,\n    versionNumber: 10,\n    alignmentPatternCenters: [6, 28, 50],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 18,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 68 },\n          { numBlocks: 2, dataCodewordsPerBlock: 69 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 43 },\n          { numBlocks: 1, dataCodewordsPerBlock: 44 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 19 },\n          { numBlocks: 2, dataCodewordsPerBlock: 20 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 15 },\n          { numBlocks: 2, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0BBF6,\n    versionNumber: 11,\n    alignmentPatternCenters: [6, 30, 54],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 20,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 81 }],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 1, dataCodewordsPerBlock: 50 },\n          { numBlocks: 4, dataCodewordsPerBlock: 51 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 22 },\n          { numBlocks: 4, dataCodewordsPerBlock: 23 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 12 },\n          { numBlocks: 8, dataCodewordsPerBlock: 13 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0C762,\n    versionNumber: 12,\n    alignmentPatternCenters: [6, 32, 58],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 92 },\n          { numBlocks: 2, dataCodewordsPerBlock: 93 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 36 },\n          { numBlocks: 2, dataCodewordsPerBlock: 37 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 20 },\n          { numBlocks: 6, dataCodewordsPerBlock: 21 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 7, dataCodewordsPerBlock: 14 },\n          { numBlocks: 4, dataCodewordsPerBlock: 15 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0D847,\n    versionNumber: 13,\n    alignmentPatternCenters: [6, 34, 62],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [{ numBlocks: 4, dataCodewordsPerBlock: 107 }],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 37 },\n          { numBlocks: 1, dataCodewordsPerBlock: 38 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 20 },\n          { numBlocks: 4, dataCodewordsPerBlock: 21 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 12, dataCodewordsPerBlock: 11 },\n          { numBlocks: 4, dataCodewordsPerBlock: 12 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0E60D,\n    versionNumber: 14,\n    alignmentPatternCenters: [6, 26, 46, 66],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 115 },\n          { numBlocks: 1, dataCodewordsPerBlock: 116 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 40 },\n          { numBlocks: 5, dataCodewordsPerBlock: 41 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 20,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 16 },\n          { numBlocks: 5, dataCodewordsPerBlock: 17 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 12 },\n          { numBlocks: 5, dataCodewordsPerBlock: 13 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x0F928,\n    versionNumber: 15,\n    alignmentPatternCenters: [6, 26, 48, 70],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 22,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 87 },\n          { numBlocks: 1, dataCodewordsPerBlock: 88 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 41 },\n          { numBlocks: 5, dataCodewordsPerBlock: 42 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 24 },\n          { numBlocks: 7, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 12 },\n          { numBlocks: 7, dataCodewordsPerBlock: 13 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x10B78,\n    versionNumber: 16,\n    alignmentPatternCenters: [6, 26, 50, 74],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 98 },\n          { numBlocks: 1, dataCodewordsPerBlock: 99 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 7, dataCodewordsPerBlock: 45 },\n          { numBlocks: 3, dataCodewordsPerBlock: 46 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [\n          { numBlocks: 15, dataCodewordsPerBlock: 19 },\n          { numBlocks: 2, dataCodewordsPerBlock: 20 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 15 },\n          { numBlocks: 13, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1145D,\n    versionNumber: 17,\n    alignmentPatternCenters: [6, 30, 54, 78],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 1, dataCodewordsPerBlock: 107 },\n          { numBlocks: 5, dataCodewordsPerBlock: 108 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 10, dataCodewordsPerBlock: 46 },\n          { numBlocks: 1, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 1, dataCodewordsPerBlock: 22 },\n          { numBlocks: 15, dataCodewordsPerBlock: 23 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 14 },\n          { numBlocks: 17, dataCodewordsPerBlock: 15 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x12A17,\n    versionNumber: 18,\n    alignmentPatternCenters: [6, 30, 56, 82],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 120 },\n          { numBlocks: 1, dataCodewordsPerBlock: 121 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 9, dataCodewordsPerBlock: 43 },\n          { numBlocks: 4, dataCodewordsPerBlock: 44 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 17, dataCodewordsPerBlock: 22 },\n          { numBlocks: 1, dataCodewordsPerBlock: 23 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 14 },\n          { numBlocks: 19, dataCodewordsPerBlock: 15 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x13532,\n    versionNumber: 19,\n    alignmentPatternCenters: [6, 30, 58, 86],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 113 },\n          { numBlocks: 4, dataCodewordsPerBlock: 114 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 44 },\n          { numBlocks: 11, dataCodewordsPerBlock: 45 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 17, dataCodewordsPerBlock: 21 },\n          { numBlocks: 4, dataCodewordsPerBlock: 22 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 9, dataCodewordsPerBlock: 13 },\n          { numBlocks: 16, dataCodewordsPerBlock: 14 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x149A6,\n    versionNumber: 20,\n    alignmentPatternCenters: [6, 34, 62, 90],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 107 },\n          { numBlocks: 5, dataCodewordsPerBlock: 108 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 41 },\n          { numBlocks: 13, dataCodewordsPerBlock: 42 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 15, dataCodewordsPerBlock: 24 },\n          { numBlocks: 5, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 15, dataCodewordsPerBlock: 15 },\n          { numBlocks: 10, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x15683,\n    versionNumber: 21,\n    alignmentPatternCenters: [6, 28, 50, 72, 94],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 116 },\n          { numBlocks: 4, dataCodewordsPerBlock: 117 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [{ numBlocks: 17, dataCodewordsPerBlock: 42 }],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 17, dataCodewordsPerBlock: 22 },\n          { numBlocks: 6, dataCodewordsPerBlock: 23 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 16 },\n          { numBlocks: 6, dataCodewordsPerBlock: 17 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x168C9,\n    versionNumber: 22,\n    alignmentPatternCenters: [6, 26, 50, 74, 98],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 111 },\n          { numBlocks: 7, dataCodewordsPerBlock: 112 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [{ numBlocks: 17, dataCodewordsPerBlock: 46 }],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 7, dataCodewordsPerBlock: 24 },\n          { numBlocks: 16, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 24,\n        ecBlocks: [{ numBlocks: 34, dataCodewordsPerBlock: 13 }],\n      },\n    ],\n  },\n  {\n    infoBits: 0x177EC,\n    versionNumber: 23,\n    alignmentPatternCenters: [6, 30, 54, 74, 102],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 121 },\n          { numBlocks: 5, dataCodewordsPerBlock: 122 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 47 },\n          { numBlocks: 14, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 24 },\n          { numBlocks: 14, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 16, dataCodewordsPerBlock: 15 },\n          { numBlocks: 14, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x18EC4,\n    versionNumber: 24,\n    alignmentPatternCenters: [6, 28, 54, 80, 106],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 117 },\n          { numBlocks: 4, dataCodewordsPerBlock: 118 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 45 },\n          { numBlocks: 14, dataCodewordsPerBlock: 46 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 24 },\n          { numBlocks: 16, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 30, dataCodewordsPerBlock: 16 },\n          { numBlocks: 2, dataCodewordsPerBlock: 17 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x191E1,\n    versionNumber: 25,\n    alignmentPatternCenters: [6, 32, 58, 84, 110],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 26,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 106 },\n          { numBlocks: 4, dataCodewordsPerBlock: 107 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 47 },\n          { numBlocks: 13, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 7, dataCodewordsPerBlock: 24 },\n          { numBlocks: 22, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 22, dataCodewordsPerBlock: 15 },\n          { numBlocks: 13, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1AFAB,\n    versionNumber: 26,\n    alignmentPatternCenters: [6, 30, 58, 86, 114],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 10, dataCodewordsPerBlock: 114 },\n          { numBlocks: 2, dataCodewordsPerBlock: 115 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 46 },\n          { numBlocks: 4, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 28, dataCodewordsPerBlock: 22 },\n          { numBlocks: 6, dataCodewordsPerBlock: 23 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 33, dataCodewordsPerBlock: 16 },\n          { numBlocks: 4, dataCodewordsPerBlock: 17 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1B08E,\n    versionNumber: 27,\n    alignmentPatternCenters: [6, 34, 62, 90, 118],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 122 },\n          { numBlocks: 4, dataCodewordsPerBlock: 123 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 22, dataCodewordsPerBlock: 45 },\n          { numBlocks: 3, dataCodewordsPerBlock: 46 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 8, dataCodewordsPerBlock: 23 },\n          { numBlocks: 26, dataCodewordsPerBlock: 24 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 12, dataCodewordsPerBlock: 15 },\n          { numBlocks: 28, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1CC1A,\n    versionNumber: 28,\n    alignmentPatternCenters: [6, 26, 50, 74, 98, 122],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 117 },\n          { numBlocks: 10, dataCodewordsPerBlock: 118 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 3, dataCodewordsPerBlock: 45 },\n          { numBlocks: 23, dataCodewordsPerBlock: 46 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 24 },\n          { numBlocks: 31, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 15 },\n          { numBlocks: 31, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1D33F,\n    versionNumber: 29,\n    alignmentPatternCenters: [6, 30, 54, 78, 102, 126],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 7, dataCodewordsPerBlock: 116 },\n          { numBlocks: 7, dataCodewordsPerBlock: 117 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 21, dataCodewordsPerBlock: 45 },\n          { numBlocks: 7, dataCodewordsPerBlock: 46 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 1, dataCodewordsPerBlock: 23 },\n          { numBlocks: 37, dataCodewordsPerBlock: 24 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 15 },\n          { numBlocks: 26, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1ED75,\n    versionNumber: 30,\n    alignmentPatternCenters: [6, 26, 52, 78, 104, 130],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 5, dataCodewordsPerBlock: 115 },\n          { numBlocks: 10, dataCodewordsPerBlock: 116 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 47 },\n          { numBlocks: 10, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 15, dataCodewordsPerBlock: 24 },\n          { numBlocks: 25, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 23, dataCodewordsPerBlock: 15 },\n          { numBlocks: 25, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x1F250,\n    versionNumber: 31,\n    alignmentPatternCenters: [6, 30, 56, 82, 108, 134],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 13, dataCodewordsPerBlock: 115 },\n          { numBlocks: 3, dataCodewordsPerBlock: 116 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 46 },\n          { numBlocks: 29, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 42, dataCodewordsPerBlock: 24 },\n          { numBlocks: 1, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 23, dataCodewordsPerBlock: 15 },\n          { numBlocks: 28, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x209D5,\n    versionNumber: 32,\n    alignmentPatternCenters: [6, 34, 60, 86, 112, 138],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [{ numBlocks: 17, dataCodewordsPerBlock: 115 }],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 10, dataCodewordsPerBlock: 46 },\n          { numBlocks: 23, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 10, dataCodewordsPerBlock: 24 },\n          { numBlocks: 35, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 15 },\n          { numBlocks: 35, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x216F0,\n    versionNumber: 33,\n    alignmentPatternCenters: [6, 30, 58, 86, 114, 142],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 17, dataCodewordsPerBlock: 115 },\n          { numBlocks: 1, dataCodewordsPerBlock: 116 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 14, dataCodewordsPerBlock: 46 },\n          { numBlocks: 21, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 29, dataCodewordsPerBlock: 24 },\n          { numBlocks: 19, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 11, dataCodewordsPerBlock: 15 },\n          { numBlocks: 46, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x228BA,\n    versionNumber: 34,\n    alignmentPatternCenters: [6, 34, 62, 90, 118, 146],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 13, dataCodewordsPerBlock: 115 },\n          { numBlocks: 6, dataCodewordsPerBlock: 116 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 14, dataCodewordsPerBlock: 46 },\n          { numBlocks: 23, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 44, dataCodewordsPerBlock: 24 },\n          { numBlocks: 7, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 59, dataCodewordsPerBlock: 16 },\n          { numBlocks: 1, dataCodewordsPerBlock: 17 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x2379F,\n    versionNumber: 35,\n    alignmentPatternCenters: [6, 30, 54, 78, 102, 126, 150],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 12, dataCodewordsPerBlock: 121 },\n          { numBlocks: 7, dataCodewordsPerBlock: 122 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 12, dataCodewordsPerBlock: 47 },\n          { numBlocks: 26, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 39, dataCodewordsPerBlock: 24 },\n          { numBlocks: 14, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 22, dataCodewordsPerBlock: 15 },\n          { numBlocks: 41, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x24B0B,\n    versionNumber: 36,\n    alignmentPatternCenters: [ 6, 24, 50, 76, 102, 128, 154 ],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 121 },\n          { numBlocks: 14, dataCodewordsPerBlock: 122 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 6, dataCodewordsPerBlock: 47 },\n          { numBlocks: 34, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 46, dataCodewordsPerBlock: 24 },\n          { numBlocks: 10, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 2, dataCodewordsPerBlock: 15 },\n          { numBlocks: 64, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x2542E,\n    versionNumber: 37,\n    alignmentPatternCenters: [ 6, 28, 54, 80, 106, 132, 158 ],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 17, dataCodewordsPerBlock: 122 },\n          { numBlocks: 4, dataCodewordsPerBlock: 123 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 29, dataCodewordsPerBlock: 46 },\n          { numBlocks: 14, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 49, dataCodewordsPerBlock: 24 },\n          { numBlocks: 10, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 24, dataCodewordsPerBlock: 15 },\n          { numBlocks: 46, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x26A64,\n    versionNumber: 38,\n    alignmentPatternCenters: [ 6, 32, 58, 84, 110, 136, 162 ],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 4, dataCodewordsPerBlock: 122 },\n          { numBlocks: 18, dataCodewordsPerBlock: 123 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 13, dataCodewordsPerBlock: 46 },\n          { numBlocks: 32, dataCodewordsPerBlock: 47 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 48, dataCodewordsPerBlock: 24 },\n          { numBlocks: 14, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 42, dataCodewordsPerBlock: 15 },\n          { numBlocks: 32, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x27541,\n    versionNumber: 39,\n    alignmentPatternCenters: [ 6, 26, 54, 82, 110, 138, 166 ],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 20, dataCodewordsPerBlock: 117 },\n          { numBlocks: 4, dataCodewordsPerBlock: 118 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 40, dataCodewordsPerBlock: 47 },\n          { numBlocks: 7, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 43, dataCodewordsPerBlock: 24 },\n          { numBlocks: 22, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 10, dataCodewordsPerBlock: 15 },\n          { numBlocks: 67, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n  {\n    infoBits: 0x28C69,\n    versionNumber: 40,\n    alignmentPatternCenters: [ 6, 30, 58, 86, 114, 142, 170 ],\n    errorCorrectionLevels: [\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 19, dataCodewordsPerBlock: 118 },\n          { numBlocks: 6, dataCodewordsPerBlock: 119 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 28,\n        ecBlocks: [\n          { numBlocks: 18, dataCodewordsPerBlock: 47 },\n          { numBlocks: 31, dataCodewordsPerBlock: 48 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 34, dataCodewordsPerBlock: 24 },\n          { numBlocks: 34, dataCodewordsPerBlock: 25 },\n        ],\n      },\n      {\n        ecCodewordsPerBlock: 30,\n        ecBlocks: [\n          { numBlocks: 20, dataCodewordsPerBlock: 15 },\n          { numBlocks: 61, dataCodewordsPerBlock: 16 },\n        ],\n      },\n    ],\n  },\n];\n","import { BitMatrix } from \"../BitMatrix\";\nimport { Point } from \"../Point\";\nimport { decode as decodeData, DecodedQR } from \"./decodeData\";\nimport { decode as rsDecode } from \"./reedsolomon\";\nimport { Version, VERSIONS } from \"./version\";\n\n// tslint:disable:no-bitwise\nfunction numBitsDiffering(x: number, y: number) {\n  let z = x ^ y;\n  let bitCount = 0;\n  while (z) {\n    bitCount++;\n    z &= z - 1;\n  }\n  return bitCount;\n}\n\nfunction pushBit(bit: any, byte: number) {\n  return (byte << 1) | bit;\n}\n// tslint:enable:no-bitwise\n\nconst FORMAT_INFO_TABLE = [\n  { bits: 0x5412, formatInfo: { errorCorrectionLevel: 1, dataMask: 0 } },\n  { bits: 0x5125, formatInfo: { errorCorrectionLevel: 1, dataMask: 1 } },\n  { bits: 0x5E7C, formatInfo: { errorCorrectionLevel: 1, dataMask: 2 } },\n  { bits: 0x5B4B, formatInfo: { errorCorrectionLevel: 1, dataMask: 3 } },\n  { bits: 0x45F9, formatInfo: { errorCorrectionLevel: 1, dataMask: 4 } },\n  { bits: 0x40CE, formatInfo: { errorCorrectionLevel: 1, dataMask: 5 } },\n  { bits: 0x4F97, formatInfo: { errorCorrectionLevel: 1, dataMask: 6 } },\n  { bits: 0x4AA0, formatInfo: { errorCorrectionLevel: 1, dataMask: 7 } },\n  { bits: 0x77C4, formatInfo: { errorCorrectionLevel: 0, dataMask: 0 } },\n  { bits: 0x72F3, formatInfo: { errorCorrectionLevel: 0, dataMask: 1 } },\n  { bits: 0x7DAA, formatInfo: { errorCorrectionLevel: 0, dataMask: 2 } },\n  { bits: 0x789D, formatInfo: { errorCorrectionLevel: 0, dataMask: 3 } },\n  { bits: 0x662F, formatInfo: { errorCorrectionLevel: 0, dataMask: 4 } },\n  { bits: 0x6318, formatInfo: { errorCorrectionLevel: 0, dataMask: 5 } },\n  { bits: 0x6C41, formatInfo: { errorCorrectionLevel: 0, dataMask: 6 } },\n  { bits: 0x6976, formatInfo: { errorCorrectionLevel: 0, dataMask: 7 } },\n  { bits: 0x1689, formatInfo: { errorCorrectionLevel: 3, dataMask: 0 } },\n  { bits: 0x13BE, formatInfo: { errorCorrectionLevel: 3, dataMask: 1 } },\n  { bits: 0x1CE7, formatInfo: { errorCorrectionLevel: 3, dataMask: 2 } },\n  { bits: 0x19D0, formatInfo: { errorCorrectionLevel: 3, dataMask: 3 } },\n  { bits: 0x0762, formatInfo: { errorCorrectionLevel: 3, dataMask: 4 } },\n  { bits: 0x0255, formatInfo: { errorCorrectionLevel: 3, dataMask: 5 } },\n  { bits: 0x0D0C, formatInfo: { errorCorrectionLevel: 3, dataMask: 6 } },\n  { bits: 0x083B, formatInfo: { errorCorrectionLevel: 3, dataMask: 7 } },\n  { bits: 0x355F, formatInfo: { errorCorrectionLevel: 2, dataMask: 0 } },\n  { bits: 0x3068, formatInfo: { errorCorrectionLevel: 2, dataMask: 1 } },\n  { bits: 0x3F31, formatInfo: { errorCorrectionLevel: 2, dataMask: 2 } },\n  { bits: 0x3A06, formatInfo: { errorCorrectionLevel: 2, dataMask: 3 } },\n  { bits: 0x24B4, formatInfo: { errorCorrectionLevel: 2, dataMask: 4 } },\n  { bits: 0x2183, formatInfo: { errorCorrectionLevel: 2, dataMask: 5 } },\n  { bits: 0x2EDA, formatInfo: { errorCorrectionLevel: 2, dataMask: 6 } },\n  { bits: 0x2BED, formatInfo: { errorCorrectionLevel: 2, dataMask: 7 } },\n];\n\nconst DATA_MASKS = [\n  (p: Point) => ((p.y + p.x) % 2) === 0,\n  (p: Point) => (p.y % 2) === 0,\n  (p: Point) => p.x % 3 === 0,\n  (p: Point) => (p.y + p.x) % 3 === 0,\n  (p: Point) => (Math.floor(p.y / 2) + Math.floor(p.x / 3)) % 2 === 0,\n  (p: Point) => ((p.x * p.y) % 2) + ((p.x * p.y) % 3) === 0,\n  (p: Point) => ((((p.y * p.x) % 2) + (p.y * p.x) % 3) % 2) === 0,\n  (p: Point) => ((((p.y + p.x) % 2) + (p.y * p.x) % 3) % 2) === 0,\n];\n\ninterface FormatInformation {\n  errorCorrectionLevel: number;\n  dataMask: number;\n}\n\nfunction buildFunctionPatternMask(version: Version): BitMatrix {\n  const dimension = 17 + 4 * version.versionNumber;\n  const matrix = BitMatrix.createEmpty(dimension, dimension);\n\n  matrix.setRegion(0, 0, 9, 9, true); // Top left finder pattern + separator + format\n  matrix.setRegion(dimension - 8, 0, 8, 9, true); // Top right finder pattern + separator + format\n  matrix.setRegion(0, dimension - 8, 9, 8, true); // Bottom left finder pattern + separator + format\n\n  // Alignment patterns\n  for (const x of version.alignmentPatternCenters) {\n    for (const y of version.alignmentPatternCenters) {\n      if (!(x === 6 && y === 6 || x === 6 && y === dimension - 7 || x === dimension - 7 && y === 6)) {\n        matrix.setRegion(x - 2, y - 2, 5, 5, true);\n      }\n    }\n  }\n\n  matrix.setRegion(6, 9, 1, dimension - 17, true); // Vertical timing pattern\n  matrix.setRegion(9, 6, dimension - 17, 1, true); // Horizontal timing pattern\n\n  if (version.versionNumber > 6) {\n    matrix.setRegion(dimension - 11, 0, 3, 6, true); // Version info, top right\n    matrix.setRegion(0, dimension - 11, 6, 3, true); // Version info, bottom left\n  }\n\n  return matrix;\n}\n\nfunction readCodewords(matrix: BitMatrix, version: Version, formatInfo: FormatInformation) {\n  const dataMask = DATA_MASKS[formatInfo.dataMask];\n  const dimension = matrix.height;\n\n  const functionPatternMask = buildFunctionPatternMask(version);\n\n  const codewords: number[] = [];\n  let currentByte = 0;\n  let bitsRead = 0;\n\n  // Read columns in pairs, from right to left\n  let readingUp = true;\n  for (let columnIndex = dimension - 1; columnIndex > 0; columnIndex -= 2) {\n    if (columnIndex === 6) { // Skip whole column with vertical alignment pattern;\n      columnIndex--;\n    }\n    for (let i = 0; i < dimension; i++) {\n      const y = readingUp ? dimension - 1 - i : i;\n      for (let columnOffset = 0; columnOffset < 2; columnOffset++) {\n        const x = columnIndex - columnOffset;\n        if (!functionPatternMask.get(x, y)) {\n          bitsRead++;\n          let bit = matrix.get(x, y);\n          if (dataMask({y, x})) {\n            bit = !bit;\n          }\n          currentByte = pushBit(bit, currentByte);\n          if (bitsRead === 8) { // Whole bytes\n            codewords.push(currentByte);\n            bitsRead = 0;\n            currentByte = 0;\n          }\n        }\n      }\n    }\n    readingUp = !readingUp;\n  }\n  return codewords;\n}\n\nfunction readVersion(matrix: BitMatrix): Version {\n  const dimension = matrix.height;\n\n  const provisionalVersion = Math.floor((dimension - 17) / 4);\n  if (provisionalVersion <= 6) { // 6 and under dont have version info in the QR code\n    return VERSIONS[provisionalVersion - 1];\n  }\n\n  let topRightVersionBits = 0;\n  for (let y = 5; y >= 0; y--) {\n    for (let x = dimension - 9; x >= dimension - 11; x--) {\n      topRightVersionBits = pushBit(matrix.get(x, y), topRightVersionBits);\n    }\n  }\n\n  let bottomLeftVersionBits = 0;\n  for (let x = 5; x >= 0; x--) {\n    for (let y = dimension - 9; y >= dimension - 11; y--) {\n      bottomLeftVersionBits = pushBit(matrix.get(x, y), bottomLeftVersionBits);\n    }\n  }\n\n  let bestDifference = Infinity;\n  let bestVersion: Version;\n  for (const version of VERSIONS) {\n    if (version.infoBits === topRightVersionBits || version.infoBits === bottomLeftVersionBits) {\n      return version;\n    }\n\n    let difference = numBitsDiffering(topRightVersionBits, version.infoBits);\n    if (difference < bestDifference) {\n      bestVersion = version;\n      bestDifference = difference;\n    }\n\n    difference = numBitsDiffering(bottomLeftVersionBits, version.infoBits);\n    if (difference < bestDifference) {\n      bestVersion = version;\n      bestDifference = difference;\n    }\n  }\n  // We can tolerate up to 3 bits of error since no two version info codewords will\n  // differ in less than 8 bits.\n  if (bestDifference <= 3) {\n    return bestVersion;\n  }\n}\n\nfunction readFormatInformation(matrix: BitMatrix) {\n  let topLeftFormatInfoBits = 0;\n  for (let x = 0; x <= 8; x++) {\n    if (x !== 6) { // Skip timing pattern bit\n      topLeftFormatInfoBits = pushBit(matrix.get(x, 8), topLeftFormatInfoBits);\n    }\n  }\n  for (let y = 7; y >= 0; y--) {\n    if (y !== 6) { // Skip timing pattern bit\n      topLeftFormatInfoBits = pushBit(matrix.get(8, y), topLeftFormatInfoBits);\n    }\n  }\n\n  const dimension = matrix.height;\n  let topRightBottomRightFormatInfoBits = 0;\n  for (let y = dimension - 1; y >= dimension - 7; y--) { // bottom left\n    topRightBottomRightFormatInfoBits = pushBit(matrix.get(8, y), topRightBottomRightFormatInfoBits);\n  }\n  for (let x = dimension - 8; x < dimension; x++) { // top right\n    topRightBottomRightFormatInfoBits = pushBit(matrix.get(x, 8), topRightBottomRightFormatInfoBits);\n  }\n\n  let bestDifference = Infinity;\n  let bestFormatInfo = null;\n  for (const {bits, formatInfo} of FORMAT_INFO_TABLE) {\n    if (bits === topLeftFormatInfoBits || bits === topRightBottomRightFormatInfoBits) {\n      return formatInfo;\n    }\n    let difference = numBitsDiffering(topLeftFormatInfoBits, bits);\n    if (difference < bestDifference) {\n      bestFormatInfo = formatInfo;\n      bestDifference = difference;\n    }\n    if (topLeftFormatInfoBits !== topRightBottomRightFormatInfoBits) { // also try the other option\n      difference = numBitsDiffering(topRightBottomRightFormatInfoBits, bits);\n      if (difference < bestDifference) {\n        bestFormatInfo = formatInfo;\n        bestDifference = difference;\n      }\n    }\n  }\n  // Hamming distance of the 32 masked codes is 7, by construction, so <= 3 bits differing means we found a match\n  if (bestDifference <= 3) {\n    return bestFormatInfo;\n  }\n  return null;\n}\n\nfunction getDataBlocks(codewords: number[], version: Version, ecLevel: number) {\n  const ecInfo = version.errorCorrectionLevels[ecLevel];\n  const dataBlocks: Array<{\n    numDataCodewords: number;\n    codewords: number[];\n  }> = [];\n\n  let totalCodewords = 0;\n  ecInfo.ecBlocks.forEach(block => {\n    for (let i = 0; i < block.numBlocks; i++) {\n      dataBlocks.push({ numDataCodewords: block.dataCodewordsPerBlock, codewords: [] });\n      totalCodewords += block.dataCodewordsPerBlock + ecInfo.ecCodewordsPerBlock;\n    }\n  });\n\n  // In some cases the QR code will be malformed enough that we pull off more or less than we should.\n  // If we pull off less there's nothing we can do.\n  // If we pull off more we can safely truncate\n  if (codewords.length < totalCodewords) {\n    return null;\n  }\n  codewords = codewords.slice(0, totalCodewords);\n\n  const shortBlockSize = ecInfo.ecBlocks[0].dataCodewordsPerBlock;\n  // Pull codewords to fill the blocks up to the minimum size\n  for (let i = 0; i < shortBlockSize; i++) {\n    for (const dataBlock of dataBlocks) {\n      dataBlock.codewords.push(codewords.shift());\n    }\n  }\n\n  // If there are any large blocks, pull codewords to fill the last element of those\n  if (ecInfo.ecBlocks.length > 1) {\n    const smallBlockCount = ecInfo.ecBlocks[0].numBlocks;\n    const largeBlockCount = ecInfo.ecBlocks[1].numBlocks;\n    for (let i = 0; i < largeBlockCount; i++) {\n      dataBlocks[smallBlockCount + i].codewords.push(codewords.shift());\n    }\n  }\n\n  // Add the rest of the codewords to the blocks. These are the error correction codewords.\n  while (codewords.length > 0) {\n    for (const dataBlock of dataBlocks) {\n      dataBlock.codewords.push(codewords.shift());\n    }\n  }\n\n  return dataBlocks;\n}\n\nfunction decodeMatrix(matrix: BitMatrix) {\n  const version = readVersion(matrix);\n  if (!version) {\n    return null;\n  }\n\n  const formatInfo = readFormatInformation(matrix);\n  if (!formatInfo) {\n    return null;\n  }\n\n  const codewords = readCodewords(matrix, version, formatInfo);\n  const dataBlocks = getDataBlocks(codewords, version, formatInfo.errorCorrectionLevel);\n  if (!dataBlocks) {\n    return null;\n  }\n\n  // Count total number of data bytes\n  const totalBytes = dataBlocks.reduce((a, b) => a + b.numDataCodewords, 0);\n  const resultBytes = new Uint8ClampedArray(totalBytes);\n\n  let resultIndex = 0;\n  for (const dataBlock of dataBlocks) {\n    const correctedBytes = rsDecode(dataBlock.codewords, dataBlock.codewords.length - dataBlock.numDataCodewords);\n    if (!correctedBytes) {\n      return null;\n    }\n    for (let i = 0; i < dataBlock.numDataCodewords; i++) {\n      resultBytes[resultIndex++] = correctedBytes[i];\n    }\n  }\n\n  try {\n    return decodeData(resultBytes, version.versionNumber);\n  } catch {\n    return null;\n  }\n}\n\nexport function decode(matrix: BitMatrix): DecodedQR {\n  if (matrix == null) {\n    return null;\n  }\n  const result = decodeMatrix(matrix);\n  if (result) {\n    return result;\n  }\n  // Decoding didn't work, try mirroring the QR across the topLeft -> bottomRight line.\n  for (let x = 0; x < matrix.width; x++) {\n    for (let y = x + 1; y < matrix.height; y++) {\n      if (matrix.get(x, y) !== matrix.get(y, x)) {\n        matrix.set(x, y, !matrix.get(x, y));\n        matrix.set(y, x, !matrix.get(y, x));\n      }\n    }\n  }\n  return decodeMatrix(matrix);\n}\n","import {BitMatrix} from \"../BitMatrix\";\nimport {Point, QRLocation} from \"../locator\";\n\ninterface PerspectiveTransform {\n  a11: number;\n  a21: number;\n  a31: number;\n  a12: number;\n  a22: number;\n  a32: number;\n  a13: number;\n  a23: number;\n  a33: number;\n}\n\nfunction squareToQuadrilateral(p1: Point, p2: Point, p3: Point, p4: Point): PerspectiveTransform {\n  const dx3 = p1.x - p2.x + p3.x - p4.x;\n  const dy3 = p1.y - p2.y + p3.y - p4.y;\n  if (dx3 === 0 && dy3 === 0) { // Affine\n    return {\n      a11: p2.x - p1.x,\n      a12: p2.y - p1.y,\n      a13: 0,\n      a21: p3.x - p2.x,\n      a22: p3.y - p2.y,\n      a23: 0,\n      a31: p1.x,\n      a32: p1.y,\n      a33: 1,\n    };\n  } else {\n    const dx1 = p2.x - p3.x;\n    const dx2 = p4.x - p3.x;\n    const dy1 = p2.y - p3.y;\n    const dy2 = p4.y - p3.y;\n    const denominator = dx1 * dy2 - dx2 * dy1;\n    const a13 = (dx3 * dy2 - dx2 * dy3) / denominator;\n    const a23 = (dx1 * dy3 - dx3 * dy1) / denominator;\n    return {\n      a11: p2.x - p1.x + a13 * p2.x,\n      a12: p2.y - p1.y + a13 * p2.y,\n      a13,\n      a21: p4.x - p1.x + a23 * p4.x,\n      a22: p4.y - p1.y + a23 * p4.y,\n      a23,\n      a31: p1.x,\n      a32: p1.y,\n      a33: 1,\n    };\n  }\n}\n\nfunction quadrilateralToSquare(p1: Point, p2: Point, p3: Point, p4: Point): PerspectiveTransform {\n  // Here, the adjoint serves as the inverse:\n  const sToQ = squareToQuadrilateral(p1, p2, p3, p4);\n  return {\n    a11: sToQ.a22 * sToQ.a33 - sToQ.a23 * sToQ.a32,\n    a12: sToQ.a13 * sToQ.a32 - sToQ.a12 * sToQ.a33,\n    a13: sToQ.a12 * sToQ.a23 - sToQ.a13 * sToQ.a22,\n    a21: sToQ.a23 * sToQ.a31 - sToQ.a21 * sToQ.a33,\n    a22: sToQ.a11 * sToQ.a33 - sToQ.a13 * sToQ.a31,\n    a23: sToQ.a13 * sToQ.a21 - sToQ.a11 * sToQ.a23,\n    a31: sToQ.a21 * sToQ.a32 - sToQ.a22 * sToQ.a31,\n    a32: sToQ.a12 * sToQ.a31 - sToQ.a11 * sToQ.a32,\n    a33: sToQ.a11 * sToQ.a22 - sToQ.a12 * sToQ.a21,\n  };\n}\n\nfunction times(a: PerspectiveTransform, b: PerspectiveTransform): PerspectiveTransform {\n  return {\n    a11: a.a11 * b.a11 + a.a21 * b.a12 + a.a31 * b.a13,\n    a12: a.a12 * b.a11 + a.a22 * b.a12 + a.a32 * b.a13,\n    a13: a.a13 * b.a11 + a.a23 * b.a12 + a.a33 * b.a13,\n    a21: a.a11 * b.a21 + a.a21 * b.a22 + a.a31 * b.a23,\n    a22: a.a12 * b.a21 + a.a22 * b.a22 + a.a32 * b.a23,\n    a23: a.a13 * b.a21 + a.a23 * b.a22 + a.a33 * b.a23,\n    a31: a.a11 * b.a31 + a.a21 * b.a32 + a.a31 * b.a33,\n    a32: a.a12 * b.a31 + a.a22 * b.a32 + a.a32 * b.a33,\n    a33: a.a13 * b.a31 + a.a23 * b.a32 + a.a33 * b.a33,\n  };\n}\n\nexport function extract(image: BitMatrix, location: QRLocation) {\n  const qToS = quadrilateralToSquare(\n    {x: 3.5, y: 3.5},\n    {x: location.dimension - 3.5, y: 3.5},\n    {x: location.dimension - 6.5, y: location.dimension - 6.5},\n    {x: 3.5, y: location.dimension - 3.5},\n  );\n  const sToQ = squareToQuadrilateral(location.topLeft, location.topRight, location.alignmentPattern, location.bottomLeft);\n  const transform = times(sToQ, qToS);\n\n  const matrix = BitMatrix.createEmpty(location.dimension, location.dimension);\n  const mappingFunction = (x: number, y: number) => {\n    const denominator = transform.a13 * x + transform.a23 * y + transform.a33;\n    return {\n      x: (transform.a11 * x + transform.a21 * y + transform.a31) / denominator,\n      y: (transform.a12 * x + transform.a22 * y + transform.a32) / denominator,\n    };\n  };\n\n  for (let y = 0; y < location.dimension; y++) {\n    for (let x = 0; x < location.dimension; x++) {\n      const xValue = x + 0.5;\n      const yValue = y + 0.5;\n      const sourcePixel = mappingFunction(xValue, yValue);\n      matrix.set(x, y, image.get(Math.floor(sourcePixel.x), Math.floor(sourcePixel.y)));\n    }\n  }\n\n  return {\n    matrix,\n    mappingFunction,\n  };\n}\n","import { BitMatrix } from \"../BitMatrix\";\n\nconst MAX_FINDERPATTERNS_TO_SEARCH = 5;\nconst MIN_QUAD_RATIO = 0.5;\nconst MAX_QUAD_RATIO = 1.5;\n\nexport interface Point {\n  x: number;\n  y: number;\n}\n\nexport interface QRLocation {\n  topRight: Point;\n  bottomLeft: Point;\n  topLeft: Point;\n  alignmentPattern: Point;\n  dimension: number;\n}\n\nconst distance = (a: Point, b: Point) => Math.sqrt((b.x - a.x) ** 2 + (b.y - a.y) ** 2);\n\nfunction sum(values: number[]) {\n  return values.reduce((a, b) => a + b);\n}\n\n// Takes three finder patterns and organizes them into topLeft, topRight, etc\nfunction reorderFinderPatterns(pattern1: Point, pattern2: Point, pattern3: Point) {\n  // Find distances between pattern centers\n  const oneTwoDistance = distance(pattern1, pattern2);\n  const twoThreeDistance = distance(pattern2, pattern3);\n  const oneThreeDistance = distance(pattern1, pattern3);\n\n  let bottomLeft: Point;\n  let topLeft: Point;\n  let topRight: Point;\n\n  // Assume one closest to other two is B; A and C will just be guesses at first\n  if (twoThreeDistance >= oneTwoDistance && twoThreeDistance >= oneThreeDistance) {\n    [bottomLeft, topLeft, topRight] = [pattern2, pattern1, pattern3];\n  } else if (oneThreeDistance >= twoThreeDistance && oneThreeDistance >= oneTwoDistance) {\n    [bottomLeft, topLeft, topRight] = [pattern1, pattern2, pattern3];\n  } else {\n    [bottomLeft, topLeft, topRight] = [pattern1, pattern3, pattern2];\n  }\n\n  // Use cross product to figure out whether bottomLeft (A) and topRight (C) are correct or flipped in relation to topLeft (B)\n  // This asks whether BC x BA has a positive z component, which is the arrangement we want. If it's negative, then\n  // we've got it flipped around and should swap topRight and bottomLeft.\n  if (((topRight.x - topLeft.x) * (bottomLeft.y - topLeft.y)) - ((topRight.y - topLeft.y) * (bottomLeft.x - topLeft.x)) < 0) {\n    [bottomLeft, topRight] = [topRight, bottomLeft];\n  }\n\n  return { bottomLeft, topLeft, topRight };\n}\n\n// Computes the dimension (number of modules on a side) of the QR Code based on the position of the finder patterns\nfunction computeDimension(topLeft: Point, topRight: Point, bottomLeft: Point, matrix: BitMatrix) {\n  const moduleSize = (\n    sum(countBlackWhiteRun(topLeft, bottomLeft, matrix, 5)) / 7 + // Divide by 7 since the ratio is 1:1:3:1:1\n    sum(countBlackWhiteRun(topLeft, topRight, matrix, 5)) / 7 +\n    sum(countBlackWhiteRun(bottomLeft, topLeft, matrix, 5)) / 7 +\n    sum(countBlackWhiteRun(topRight, topLeft, matrix, 5)) / 7\n  ) / 4;\n\n  if (moduleSize < 1) {\n    throw new Error(\"Invalid module size\");\n  }\n\n  const topDimension = Math.round(distance(topLeft, topRight) / moduleSize);\n  const sideDimension = Math.round(distance(topLeft, bottomLeft) / moduleSize);\n  let dimension = Math.floor((topDimension + sideDimension) / 2) + 7;\n  switch (dimension % 4) {\n    case 0:\n      dimension++;\n      break;\n    case 2:\n      dimension--;\n      break;\n  }\n  return { dimension, moduleSize };\n}\n\n// Takes an origin point and an end point and counts the sizes of the black white run from the origin towards the end point.\n// Returns an array of elements, representing the pixel size of the black white run.\n// Uses a variant of http://en.wikipedia.org/wiki/Bresenham's_line_algorithm\nfunction countBlackWhiteRunTowardsPoint(origin: Point, end: Point, matrix: BitMatrix, length: number) {\n  const switchPoints: Point[] = [{x: Math.floor(origin.x), y: Math.floor(origin.y)}];\n  const steep = Math.abs(end.y - origin.y) > Math.abs(end.x - origin.x);\n\n  let fromX: number;\n  let fromY: number;\n  let toX: number;\n  let toY: number;\n  if (steep) {\n    fromX = Math.floor(origin.y);\n    fromY = Math.floor(origin.x);\n    toX = Math.floor(end.y);\n    toY = Math.floor(end.x);\n  } else {\n    fromX = Math.floor(origin.x);\n    fromY = Math.floor(origin.y);\n    toX = Math.floor(end.x);\n    toY = Math.floor(end.y);\n  }\n\n  const dx = Math.abs(toX - fromX);\n  const dy = Math.abs(toY - fromY);\n  let error = Math.floor(-dx / 2);\n  const xStep = fromX < toX ? 1 : -1;\n  const yStep = fromY < toY ? 1 : -1;\n\n  let currentPixel = true;\n  // Loop up until x == toX, but not beyond\n  for (let x = fromX, y = fromY; x !== toX + xStep; x += xStep) {\n    // Does current pixel mean we have moved white to black or vice versa?\n    // Scanning black in state 0,2 and white in state 1, so if we find the wrong\n    // color, advance to next state or end if we are in state 2 already\n    const realX = steep ? y : x;\n    const realY = steep ? x : y;\n    if (matrix.get(realX, realY) !== currentPixel) {\n      currentPixel = !currentPixel;\n      switchPoints.push({x: realX, y: realY});\n      if (switchPoints.length === length + 1) {\n        break;\n      }\n    }\n    error += dy;\n    if (error > 0) {\n      if (y === toY) {\n        break;\n      }\n      y += yStep;\n      error -= dx;\n    }\n  }\n  const distances: number[] = [];\n  for (let i = 0; i < length; i++) {\n    if (switchPoints[i] && switchPoints[i + 1]) {\n      distances.push(distance(switchPoints[i], switchPoints[i + 1]));\n    } else {\n      distances.push(0);\n    }\n  }\n  return distances;\n}\n\n// Takes an origin point and an end point and counts the sizes of the black white run in the origin point\n// along the line that intersects with the end point. Returns an array of elements, representing the pixel sizes\n// of the black white run. Takes a length which represents the number of switches from black to white to look for.\nfunction countBlackWhiteRun(origin: Point, end: Point, matrix: BitMatrix, length: number) {\n  const rise = end.y - origin.y;\n  const run = end.x - origin.x;\n\n  const towardsEnd = countBlackWhiteRunTowardsPoint(origin, end, matrix, Math.ceil(length / 2));\n  const awayFromEnd = countBlackWhiteRunTowardsPoint(origin, {x: origin.x - run, y: origin.y - rise}, matrix, Math.ceil(length / 2));\n\n  const middleValue = towardsEnd.shift() + awayFromEnd.shift() - 1; // Substract one so we don't double count a pixel\n  return awayFromEnd.concat(middleValue).concat(...towardsEnd);\n}\n\n// Takes in a black white run and an array of expected ratios. Returns the average size of the run as well as the \"error\" -\n// that is the amount the run diverges from the expected ratio\nfunction scoreBlackWhiteRun(sequence: number[], ratios: number[]) {\n  const averageSize = sum(sequence) / sum(ratios);\n  let error = 0;\n  ratios.forEach((ratio, i) => {\n    error += (sequence[i] - ratio * averageSize) ** 2;\n  });\n\n  return { averageSize, error };\n}\n\n// Takes an X,Y point and an array of sizes and scores the point against those ratios.\n// For example for a finder pattern takes the ratio list of 1:1:3:1:1 and checks horizontal, vertical and diagonal ratios\n// against that.\nfunction scorePattern(point: Point, ratios: number[], matrix: BitMatrix) {\n  try {\n    const horizontalRun = countBlackWhiteRun(point, {x: -1, y: point.y}, matrix, ratios.length);\n    const verticalRun = countBlackWhiteRun(point, {x: point.x, y: -1}, matrix, ratios.length);\n\n    const topLeftPoint = {\n      x: Math.max(0, point.x - point.y) - 1,\n      y: Math.max(0, point.y - point.x) - 1,\n    };\n    const topLeftBottomRightRun = countBlackWhiteRun(point, topLeftPoint, matrix, ratios.length);\n\n    const bottomLeftPoint = {\n      x: Math.min(matrix.width, point.x + point.y) + 1,\n      y: Math.min(matrix.height, point.y + point.x) + 1,\n    };\n    const bottomLeftTopRightRun = countBlackWhiteRun(point, bottomLeftPoint, matrix, ratios.length);\n\n    const horzError = scoreBlackWhiteRun(horizontalRun, ratios);\n    const vertError = scoreBlackWhiteRun(verticalRun, ratios);\n    const diagDownError = scoreBlackWhiteRun(topLeftBottomRightRun, ratios);\n    const diagUpError = scoreBlackWhiteRun(bottomLeftTopRightRun, ratios);\n\n    const ratioError = Math.sqrt(horzError.error * horzError.error +\n      vertError.error * vertError.error +\n      diagDownError.error * diagDownError.error +\n      diagUpError.error * diagUpError.error);\n\n    const avgSize = (horzError.averageSize + vertError.averageSize + diagDownError.averageSize + diagUpError.averageSize) / 4;\n\n    const sizeError = ((horzError.averageSize - avgSize) ** 2 +\n      (vertError.averageSize - avgSize) ** 2 +\n      (diagDownError.averageSize - avgSize) ** 2 +\n      (diagUpError.averageSize - avgSize) ** 2) / avgSize;\n    return ratioError + sizeError;\n  } catch {\n    return Infinity;\n  }\n}\n\nfunction recenterLocation(matrix: BitMatrix, p: Point): Point {\n  let leftX = Math.round(p.x);\n  while (matrix.get(leftX, Math.round(p.y))) {\n    leftX--;\n  }\n  let rightX = Math.round(p.x);\n  while (matrix.get(rightX, Math.round(p.y))) {\n    rightX++;\n  }\n  const x = (leftX + rightX) / 2;\n\n  let topY = Math.round(p.y);\n  while (matrix.get(Math.round(x), topY)) {\n    topY--;\n  }\n  let bottomY = Math.round(p.y);\n  while (matrix.get(Math.round(x), bottomY)) {\n    bottomY++;\n  }\n  const y = (topY + bottomY) / 2;\n\n  return { x, y };\n}\n\ninterface Quad {\n  top: {\n    startX: number;\n    endX: number;\n    y: number;\n  };\n  bottom: {\n    startX: number;\n    endX: number;\n    y: number;\n  };\n}\n\nexport function locate(matrix: BitMatrix): QRLocation[] {\n  const finderPatternQuads: Quad[] = [];\n  let activeFinderPatternQuads: Quad[] = [];\n  const alignmentPatternQuads: Quad[] = [];\n  let activeAlignmentPatternQuads: Quad[] = [];\n\n  for (let y = 0; y <= matrix.height; y++) {\n    let length = 0;\n    let lastBit = false;\n    let scans = [0, 0, 0, 0, 0];\n\n    for (let x = -1; x <= matrix.width; x++) {\n      const v = matrix.get(x, y);\n      if (v === lastBit) {\n        length++;\n      } else {\n        scans = [scans[1], scans[2], scans[3], scans[4], length];\n        length = 1;\n        lastBit = v;\n\n        // Do the last 5 color changes ~ match the expected ratio for a finder pattern? 1:1:3:1:1 of b:w:b:w:b\n        const averageFinderPatternBlocksize = sum(scans) / 7;\n        const validFinderPattern =\n          Math.abs(scans[0] - averageFinderPatternBlocksize) < averageFinderPatternBlocksize &&\n          Math.abs(scans[1] - averageFinderPatternBlocksize) < averageFinderPatternBlocksize &&\n          Math.abs(scans[2] - 3 * averageFinderPatternBlocksize) < 3 * averageFinderPatternBlocksize &&\n          Math.abs(scans[3] - averageFinderPatternBlocksize) < averageFinderPatternBlocksize &&\n          Math.abs(scans[4] - averageFinderPatternBlocksize) < averageFinderPatternBlocksize &&\n          !v; // And make sure the current pixel is white since finder patterns are bordered in white\n\n        // Do the last 3 color changes ~ match the expected ratio for an alignment pattern? 1:1:1 of w:b:w\n        const averageAlignmentPatternBlocksize = sum(scans.slice(-3)) / 3;\n        const validAlignmentPattern =\n          Math.abs(scans[2] - averageAlignmentPatternBlocksize) < averageAlignmentPatternBlocksize &&\n          Math.abs(scans[3] - averageAlignmentPatternBlocksize) < averageAlignmentPatternBlocksize &&\n          Math.abs(scans[4] - averageAlignmentPatternBlocksize) < averageAlignmentPatternBlocksize &&\n          v; // Is the current pixel black since alignment patterns are bordered in black\n\n        if (validFinderPattern) {\n          // Compute the start and end x values of the large center black square\n          const endX = x - scans[3] - scans[4];\n          const startX = endX - scans[2];\n\n          const line = { startX, endX, y };\n          // Is there a quad directly above the current spot? If so, extend it with the new line. Otherwise, create a new quad with\n          // that line as the starting point.\n          const matchingQuads = activeFinderPatternQuads.filter(q =>\n            (startX >= q.bottom.startX && startX <= q.bottom.endX) ||\n            (endX >= q.bottom.startX && startX <= q.bottom.endX) ||\n            (startX <= q.bottom.startX && endX >= q.bottom.endX && (\n              (scans[2] / (q.bottom.endX - q.bottom.startX)) < MAX_QUAD_RATIO &&\n              (scans[2] / (q.bottom.endX - q.bottom.startX)) > MIN_QUAD_RATIO\n            )),\n          );\n          if (matchingQuads.length > 0) {\n            matchingQuads[0].bottom = line;\n          } else {\n            activeFinderPatternQuads.push({ top: line, bottom: line });\n          }\n        }\n        if (validAlignmentPattern) {\n          // Compute the start and end x values of the center black square\n          const endX = x - scans[4];\n          const startX = endX - scans[3];\n\n          const line = { startX, y, endX };\n          // Is there a quad directly above the current spot? If so, extend it with the new line. Otherwise, create a new quad with\n          // that line as the starting point.\n          const matchingQuads = activeAlignmentPatternQuads.filter(q =>\n            (startX >= q.bottom.startX && startX <= q.bottom.endX) ||\n            (endX >= q.bottom.startX && startX <= q.bottom.endX) ||\n            (startX <= q.bottom.startX && endX >= q.bottom.endX && (\n              (scans[2] / (q.bottom.endX - q.bottom.startX)) < MAX_QUAD_RATIO &&\n              (scans[2] / (q.bottom.endX - q.bottom.startX)) > MIN_QUAD_RATIO\n            )),\n          );\n          if (matchingQuads.length > 0) {\n            matchingQuads[0].bottom = line;\n          } else {\n            activeAlignmentPatternQuads.push({ top: line, bottom: line });\n          }\n        }\n      }\n    }\n    finderPatternQuads.push(...activeFinderPatternQuads.filter(q => q.bottom.y !== y && q.bottom.y - q.top.y >= 2));\n    activeFinderPatternQuads = activeFinderPatternQuads.filter(q => q.bottom.y === y);\n\n    alignmentPatternQuads.push(...activeAlignmentPatternQuads.filter(q => q.bottom.y !== y));\n    activeAlignmentPatternQuads = activeAlignmentPatternQuads.filter(q => q.bottom.y === y);\n\n  }\n\n  finderPatternQuads.push(...activeFinderPatternQuads.filter(q => q.bottom.y - q.top.y >= 2));\n  alignmentPatternQuads.push(...activeAlignmentPatternQuads);\n\n  // Refactored from cozmo/jsQR to (hopefully) circumvent an issue in Safari 13+ on both Mac and iOS (also including\n  // iOS Chrome and other Safari iOS derivatives). Safari was very occasionally and apparently not deterministically\n  // throwing a \"RangeError: Array size is not a small enough positive integer.\" exception seemingly within the second\n  // .map of the original code (here the second for-loop). This second .map contained a nested .map call over the same\n  // array instance which was the chained result from previous calls to .map, .filter and .sort which potentially caused\n  // this bug in Safari?\n  // Also see https://github.com/cozmo/jsQR/issues/157 and https://bugs.webkit.org/show_bug.cgi?id=211619#c3\n  const scoredFinderPatternPositions: Array<Point & { size: number, score: number }> = [];\n  for (const quad of finderPatternQuads) {\n    if (quad.bottom.y - quad.top.y < 2) {\n      // All quads must be at least 2px tall since the center square is larger than a block\n      continue;\n    }\n\n    // calculate quad center\n    const x = (quad.top.startX + quad.top.endX + quad.bottom.startX + quad.bottom.endX) / 4;\n    const y = (quad.top.y + quad.bottom.y + 1) / 2;\n    if (!matrix.get(Math.round(x), Math.round(y))) {\n      continue;\n    }\n\n    const lengths = [quad.top.endX - quad.top.startX, quad.bottom.endX - quad.bottom.startX, quad.bottom.y - quad.top.y + 1];\n    const size = sum(lengths) / lengths.length;\n    // Initial scoring of finder pattern quads by looking at their ratios, not taking into account position\n    const score = scorePattern({x: Math.round(x), y: Math.round(y)}, [1, 1, 3, 1, 1], matrix);\n    scoredFinderPatternPositions.push({ score, x, y, size });\n  }\n  if (scoredFinderPatternPositions.length < 3) {\n    // A QR code has 3 finder patterns, therefore we need at least 3 candidates.\n    return null;\n  }\n  scoredFinderPatternPositions.sort((a, b) => a.score - b.score);\n\n  // Now take the top finder pattern options and try to find 2 other options with a similar size.\n  const finderPatternGroups: Array<{ points: [Point, Point, Point], score: number }> = [];\n  for (let i = 0; i < Math.min(scoredFinderPatternPositions.length, MAX_FINDERPATTERNS_TO_SEARCH); ++i) {\n    const point = scoredFinderPatternPositions[i];\n    const otherPoints: typeof scoredFinderPatternPositions = [];\n\n    for (const otherPoint of scoredFinderPatternPositions) {\n      if (otherPoint === point) {\n        continue;\n      }\n      otherPoints.push({\n        ...otherPoint,\n        score: otherPoint.score + ((otherPoint.size - point.size) ** 2) / point.size, // score similarity of sizes\n      });\n    }\n    otherPoints.sort((a, b) => a.score - b.score);\n\n    finderPatternGroups.push({\n      points: [point, otherPoints[0], otherPoints[1]], // note that otherPoints.length >= 2 as scoredFinderPatternPositions.length >= 3\n      score: point.score + otherPoints[0].score + otherPoints[1].score, // total combined score of the three points in the group\n    });\n  }\n  finderPatternGroups.sort((a, b) => a.score - b.score);\n  const bestFinderPatternGroup = finderPatternGroups[0];\n\n  const { topRight, topLeft, bottomLeft } = reorderFinderPatterns(...bestFinderPatternGroup.points);\n  const alignment = findAlignmentPattern(matrix, alignmentPatternQuads, topRight, topLeft, bottomLeft);\n  const result: QRLocation[] = [];\n  if (alignment) {\n    result.push({\n      alignmentPattern: { x: alignment.alignmentPattern.x, y: alignment.alignmentPattern.y },\n      bottomLeft: {x: bottomLeft.x, y: bottomLeft.y },\n      dimension: alignment.dimension,\n      topLeft: {x: topLeft.x, y: topLeft.y },\n      topRight: {x: topRight.x, y: topRight.y },\n    });\n  }\n\n  // We normally use the center of the quads as the location of the tracking points, which is optimal for most cases and will account\n  // for a skew in the image. However, In some cases, a slight skew might not be real and instead be caused by image compression\n  // errors and/or low resolution. For those cases, we'd be better off centering the point exactly in the middle of the black area. We\n  // compute and return the location data for the naively centered points as it is little additional work and allows for multiple\n  // attempts at decoding harder images.\n  const midTopRight = recenterLocation(matrix, topRight);\n  const midTopLeft = recenterLocation(matrix, topLeft);\n  const midBottomLeft = recenterLocation(matrix, bottomLeft);\n  const centeredAlignment = findAlignmentPattern(matrix, alignmentPatternQuads, midTopRight, midTopLeft, midBottomLeft);\n  if (centeredAlignment) {\n    result.push({\n      alignmentPattern: { x: centeredAlignment.alignmentPattern.x, y: centeredAlignment.alignmentPattern.y },\n      bottomLeft: { x: midBottomLeft.x, y: midBottomLeft. y },\n      topLeft: { x: midTopLeft.x, y: midTopLeft. y },\n      topRight: { x: midTopRight.x, y: midTopRight. y },\n      dimension: centeredAlignment.dimension,\n    });\n  }\n\n  if (result.length === 0) {\n    return null;\n  }\n\n  return result;\n}\n\nfunction findAlignmentPattern(matrix: BitMatrix, alignmentPatternQuads: Quad[], topRight: Point, topLeft: Point, bottomLeft: Point) {\n  // Now that we've found the three finder patterns we can determine the blockSize and the size of the QR code.\n  // We'll use these to help find the alignment pattern but also later when we do the extraction.\n  let dimension: number;\n  let moduleSize: number;\n  try {\n    ({ dimension, moduleSize } = computeDimension(topLeft, topRight, bottomLeft, matrix));\n  } catch (e) {\n    return null;\n  }\n\n  // Now find the alignment pattern\n  const bottomRightFinderPattern = { // Best guess at where a bottomRight finder pattern would be\n    x: topRight.x - topLeft.x + bottomLeft.x,\n    y: topRight.y - topLeft.y + bottomLeft.y,\n  };\n  const modulesBetweenFinderPatterns = ((distance(topLeft, bottomLeft) + distance(topLeft, topRight)) / 2 / moduleSize);\n  const correctionToTopLeft = 1 - (3 / modulesBetweenFinderPatterns);\n  const expectedAlignmentPattern = {\n    x: topLeft.x + correctionToTopLeft * (bottomRightFinderPattern.x - topLeft.x),\n    y: topLeft.y + correctionToTopLeft * (bottomRightFinderPattern.y - topLeft.y),\n  };\n\n  const alignmentPatterns = alignmentPatternQuads\n    .map(q => {\n      const x = (q.top.startX + q.top.endX + q.bottom.startX + q.bottom.endX) / 4;\n      const y = (q.top.y + q.bottom.y + 1) / 2;\n      if (!matrix.get(Math.floor(x), Math.floor(y))) {\n        return;\n      }\n\n      const sizeScore = scorePattern({x: Math.floor(x), y: Math.floor(y)}, [1, 1, 1], matrix);\n      const score = sizeScore + distance({x, y}, expectedAlignmentPattern);\n      return { x, y, score };\n    })\n    .filter(v => !!v)\n    .sort((a, b) => a.score - b.score);\n\n  // If there are less than 15 modules between finder patterns it's a version 1 QR code and as such has no alignmemnt pattern\n  // so we can only use our best guess.\n  const alignmentPattern = modulesBetweenFinderPatterns >= 15 && alignmentPatterns.length ? alignmentPatterns[0] : expectedAlignmentPattern;\n\n  return { alignmentPattern, dimension };\n}\n","import {binarize} from \"./binarizer\";\nimport {BitMatrix} from \"./BitMatrix\";\nimport {Chunks} from \"./decoder/decodeData\";\nimport {decode} from \"./decoder/decoder\";\nimport { Version } from \"./decoder/version\";\nimport {extract} from \"./extractor\";\nimport {locate, Point} from \"./locator\";\n\nexport interface QRCode {\n  binaryData: number[];\n  data: string;\n  chunks: Chunks;\n  version: number;\n  location: {\n    topRightCorner: Point;\n    topLeftCorner: Point;\n    bottomRightCorner: Point;\n    bottomLeftCorner: Point;\n\n    topRightFinderPattern: Point;\n    topLeftFinderPattern: Point;\n    bottomLeftFinderPattern: Point;\n\n    bottomRightAlignmentPattern?: Point;\n  };\n  matrix: BitMatrix;\n}\n\nfunction scan(matrix: BitMatrix): QRCode | null {\n  const locations = locate(matrix);\n  if (!locations) {\n    return null;\n  }\n\n  for (const location of locations) {\n    const extracted = extract(matrix, location);\n    const decoded = decode(extracted.matrix);\n    if (decoded) {\n      return {\n        binaryData: decoded.bytes,\n        data: decoded.text,\n        chunks: decoded.chunks,\n        version: decoded.version,\n        location: {\n          topRightCorner: extracted.mappingFunction(location.dimension, 0),\n          topLeftCorner: extracted.mappingFunction(0, 0),\n          bottomRightCorner: extracted.mappingFunction(location.dimension, location.dimension),\n          bottomLeftCorner: extracted.mappingFunction(0, location.dimension),\n\n          topRightFinderPattern: location.topRight,\n          topLeftFinderPattern: location.topLeft,\n          bottomLeftFinderPattern: location.bottomLeft,\n\n          bottomRightAlignmentPattern: location.alignmentPattern,\n        },\n        matrix: extracted.matrix,\n      };\n    }\n  }\n  return null;\n}\n\nexport interface Options {\n  inversionAttempts?: \"dontInvert\" | \"onlyInvert\" | \"attemptBoth\" | \"invertFirst\";\n  greyScaleWeights?: GreyscaleWeights;\n  canOverwriteImage?: boolean;\n}\n\nexport interface GreyscaleWeights {\n  red: number;\n  green: number;\n  blue: number;\n  useIntegerApproximation?: boolean;\n}\n\nconst defaultOptions: Options = {\n  inversionAttempts: \"attemptBoth\",\n  greyScaleWeights: {\n    red: 0.2126,\n    green: 0.7152,\n    blue: 0.0722,\n    useIntegerApproximation: false,\n  },\n  canOverwriteImage: true,\n};\n\nfunction mergeObject(target: any, src: any) {\n  Object.keys(src).forEach(opt => { // Sad implementation of Object.assign since we target es5 not es6\n    target[opt] = src[opt];\n  });\n}\n\nfunction jsQR(data: Uint8ClampedArray, width: number, height: number, providedOptions: Options = {}): QRCode | null {\n  const options = Object.create(null);\n  mergeObject(options, defaultOptions);\n  mergeObject(options, providedOptions);\n\n  const tryInvertedFirst = options.inversionAttempts === \"onlyInvert\" || options.inversionAttempts === \"invertFirst\";\n  const shouldInvert = options.inversionAttempts === \"attemptBoth\" || tryInvertedFirst;\n  const {binarized, inverted} = binarize(data, width, height, shouldInvert, options.greyScaleWeights,\n      options.canOverwriteImage);\n  let result = scan(tryInvertedFirst ? inverted : binarized);\n  if (!result && (options.inversionAttempts === \"attemptBoth\" || options.inversionAttempts === \"invertFirst\")) {\n    result = scan(tryInvertedFirst ? binarized : inverted);\n  }\n  return result;\n}\n\n(jsQR as any).default = jsQR;\nexport default jsQR;\n","// @ts-ignore jsqr-es6 does not provide types currently\nimport jsQR from '../node_modules/jsqr-es6/dist/jsQR.js';\n\ntype GrayscaleWeights = {\n    red: number,\n    green: number,\n    blue: number,\n    useIntegerApproximation: boolean,\n};\n\nlet inversionAttempts: 'dontInvert' | 'onlyInvert' | 'attemptBoth' = 'dontInvert';\nlet grayscaleWeights: GrayscaleWeights = {\n    // weights for quick luma integer approximation (https://en.wikipedia.org/wiki/YUV#Full_swing_for_BT.601)\n    red: 77,\n    green: 150,\n    blue: 29,\n    useIntegerApproximation: true,\n};\n\nself.onmessage = event => {\n    const id = event['data']['id'];\n    const type = event['data']['type'];\n    const data = event['data']['data'];\n\n    switch (type) {\n        case 'decode':\n            decode(data, id);\n            break;\n        case 'grayscaleWeights':\n            setGrayscaleWeights(data);\n            break;\n        case 'inversionMode':\n            setInversionMode(data);\n            break;\n        case 'close':\n            // close after earlier messages in the event loop finished processing\n            self.close();\n            break;\n    }\n};\n\nfunction decode(data: { data: Uint8ClampedArray, width: number, height: number }, requestId: number): void {\n    const rgbaData = data['data'];\n    const width = data['width'];\n    const height = data['height'];\n    const result = jsQR(rgbaData, width, height, {\n        inversionAttempts: inversionAttempts,\n        greyScaleWeights: grayscaleWeights,\n    });\n    if (!result) {\n        (self as unknown as Worker).postMessage({\n            id: requestId,\n            type: 'qrResult',\n            data: null,\n        });\n        return;\n    }\n\n    (self as unknown as Worker).postMessage({\n        id: requestId,\n        type: 'qrResult',\n        data: result.data,\n        // jsQR doesn't return anything in data if it is binary, so we sometime\n        // need to use the raw binary value (also useful for other languages like Mandarin)\n        bytes: result.binaryData,\n        // equivalent to cornerPoints of native BarcodeDetector\n        cornerPoints: [\n            result.location.topLeftCorner,\n            result.location.topRightCorner,\n            result.location.bottomRightCorner,\n            result.location.bottomLeftCorner,\n        ],\n    });\n}\n\nfunction 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\ No newline at end of file
diff --git a/qr-scanner.legacy.min.js b/qr-scanner.legacy.min.js
deleted file mode 100644
index 45b0c01..0000000
--- a/qr-scanner.legacy.min.js
+++ /dev/null
@@ -1,56 +0,0 @@
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-!a._codeOutlineHighlightRemovalTimeout&&(a._codeOutlineHighlightRemovalTimeout=setTimeout(()=>a.$codeOutlineHighlight.style.display="none",100))}a._scanFrame()})})}_onDecodeError(a){a!==c.NO_QR_CODE_FOUND&&console.log(a)}_getCameraStream(){const a=this;return $jscomp.asyncExecutePromiseGeneratorFunction(function*(){if(!navigator.mediaDevices)throw"Camera not found.";let b=/^(environment|user)$/.test(a._preferredCamera)?"facingMode":"deviceId",d=[{width:{min:1024}},{width:{min:768}},{}],f=d.map(g=>
-Object.assign({},g,{[b]:{exact:a._preferredCamera}}));for(let g of[...f,...d])try{let k=yield navigator.mediaDevices.getUserMedia({video:g,audio:!1}),l=a._getFacingMode(k)||(g.facingMode?a._preferredCamera:"environment"===a._preferredCamera?"user":"environment");return{stream:k,facingMode:l}}catch(k){}throw"Camera not found.";})}_restartVideoStream(){const a=this;return $jscomp.asyncExecutePromiseGeneratorFunction(function*(){let b=a._paused;(yield a.pause(!0))&&!b&&a._active&&(yield a.start())})}static _stopVideoStream(a){for(let b of a.getTracks())b.stop(),
-a.removeTrack(b)}_setVideoMirror(a){this.$video.style.transform="scaleX("+("user"===a?-1:1)+")"}_getFacingMode(a){return(a=a.getVideoTracks()[0])?/rear|back|environment/i.test(a.label)?"environment":/front|user|face/i.test(a.label)?"user":null:null}static _drawToCanvas(a,b,d,f=!1){d=d||document.createElement("canvas");let g=b&&b.x?b.x:0,k=b&&b.y?b.y:0,l=b&&b.width?b.width:a.videoWidth||a.width,p=b&&b.height?b.height:a.videoHeight||a.height;f||(f=b&&b.downScaledWidth?b.downScaledWidth:l,b=b&&b.downScaledHeight?
-b.downScaledHeight:p,d.width!==f&&(d.width=f),d.height!==b&&(d.height=b));b=d.getContext("2d",{alpha:!1});b.imageSmoothingEnabled=!1;b.drawImage(a,g,k,l,p,0,0,d.width,d.height);return[d,b]}static _loadImage(a){return $jscomp.asyncExecutePromiseGeneratorFunction(function*(){if(a instanceof Image)return yield c._awaitImageLoad(a),a;if(a instanceof HTMLVideoElement||a instanceof HTMLCanvasElement||a instanceof SVGImageElement||"OffscreenCanvas"in window&&a instanceof OffscreenCanvas||"ImageBitmap"in
-window&&a instanceof ImageBitmap)return a;if(a instanceof File||a instanceof Blob||a instanceof URL||"string"===typeof a){let b=new Image;b.src=a instanceof File||a instanceof Blob?URL.createObjectURL(a):a.toString();try{return yield c._awaitImageLoad(b),b}finally{(a instanceof File||a instanceof Blob)&&URL.revokeObjectURL(b.src)}}else throw"Unsupported image type.";})}static _awaitImageLoad(a){return $jscomp.asyncExecutePromiseGeneratorFunction(function*(){a.complete&&0!==a.naturalWidth||(yield new Promise((b,
-d)=>{let f=g=>{a.removeEventListener("load",f);a.removeEventListener("error",f);g instanceof ErrorEvent?d("Image load error"):b()};a.addEventListener("load",f);a.addEventListener("error",f)}))})}static _postWorkerMessage(a,b,d,f){return $jscomp.asyncExecutePromiseGeneratorFunction(function*(){return c._postWorkerMessageSync(yield a,b,d,f)})}static _postWorkerMessageSync(a,b,d,f){if(!(a instanceof Worker))return-1;let g=c._workerMessageId++;a.postMessage({id:g,type:b,data:d},f);return g}}c.DEFAULT_CANVAS_SIZE=
-400;c.NO_QR_CODE_FOUND="No QR code found";c._disableBarcodeDetector=!1;c._workerMessageId=0;var e=Object.freeze({__proto__:null,createWorker:()=>new Worker(URL.createObjectURL(new Blob(['class x{constructor(a,b){this.width=b;this.height=a.length/b;this.data=a}static createEmpty(a,b){return new x(new Uint8ClampedArray(a*b),a)}get(a,b){return 0>a||a>=this.width||0>b||b>=this.height?!1:!!this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c?1:0}setRegion(a,b,c,d,e){for(let f=b;f<b+d;f++)for(let g=a;g<a+c;g++)this.set(g,f,!!e)}}\nclass A{constructor(a,b,c){this.width=a;a*=b;if(c&&c.length!==a)throw Error("Wrong buffer size");this.data=c||new Uint8ClampedArray(a)}get(a,b){return this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c}}\nclass ba{constructor(a){this.bitOffset=this.byteOffset=0;this.bytes=a}readBits(a){if(1>a||32<a||a>this.available())throw Error("Cannot read "+a.toString()+" bits");var b=0;if(0<this.bitOffset){b=8-this.bitOffset;var c=a<b?a:b;b-=c;b=(this.bytes[this.byteOffset]&255>>8-c<<b)>>b;a-=c;this.bitOffset+=c;8===this.bitOffset&&(this.bitOffset=0,this.byteOffset++)}if(0<a){for(;8<=a;)b=b<<8|this.bytes[this.byteOffset]&255,this.byteOffset++,a-=8;0<a&&(c=8-a,b=b<<a|(this.bytes[this.byteOffset]&255>>c<<c)>>c,\nthis.bitOffset+=a)}return b}available(){return 8*(this.bytes.length-this.byteOffset)-this.bitOffset}}var B,C=B||(B={});C.Numeric="numeric";C.Alphanumeric="alphanumeric";C.Byte="byte";C.Kanji="kanji";C.ECI="eci";C.StructuredAppend="structuredappend";var D,E=D||(D={});E[E.Terminator=0]="Terminator";E[E.Numeric=1]="Numeric";E[E.Alphanumeric=2]="Alphanumeric";E[E.Byte=4]="Byte";E[E.Kanji=8]="Kanji";E[E.ECI=7]="ECI";E[E.StructuredAppend=3]="StructuredAppend";let F="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:".split("");\nfunction ca(a,b){let c=[],d="";b=a.readBits([8,16,16][b]);for(let e=0;e<b;e++){let f=a.readBits(8);c.push(f)}try{d+=decodeURIComponent(c.map(e=>`%${("0"+e.toString(16)).substr(-2)}`).join(""))}catch(e){}return{bytes:c,text:d}}\nfunction da(a,b){a=new ba(a);let c=9>=b?0:26>=b?1:2;for(b={text:"",bytes:[],chunks:[],version:b};4<=a.available();){var d=a.readBits(4);if(d===D.Terminator)return b;if(d===D.ECI)0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(7)}):0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(14)}):0===a.readBits(1)?b.chunks.push({type:B.ECI,assignmentNumber:a.readBits(21)}):b.chunks.push({type:B.ECI,assignmentNumber:-1});else if(d===D.Numeric){var e=a,f=[];d="";for(var g=\ne.readBits([10,12,14][c]);3<=g;){var h=e.readBits(10);if(1E3<=h)throw Error("Invalid numeric value above 999");var k=Math.floor(h/100),m=Math.floor(h/10)%10;h%=10;f.push(48+k,48+m,48+h);d+=k.toString()+m.toString()+h.toString();g-=3}if(2===g){g=e.readBits(7);if(100<=g)throw Error("Invalid numeric value above 99");e=Math.floor(g/10);g%=10;f.push(48+e,48+g);d+=e.toString()+g.toString()}else if(1===g){e=e.readBits(4);if(10<=e)throw Error("Invalid numeric value above 9");f.push(48+e);d+=e.toString()}b.text+=\nd;b.bytes.push(...f);b.chunks.push({type:B.Numeric,text:d})}else if(d===D.Alphanumeric){e=a;f=[];d="";for(g=e.readBits([9,11,13][c]);2<=g;)m=e.readBits(11),k=Math.floor(m/45),m%=45,f.push(F[k].charCodeAt(0),F[m].charCodeAt(0)),d+=F[k]+F[m],g-=2;1===g&&(e=e.readBits(6),f.push(F[e].charCodeAt(0)),d+=F[e]);b.text+=d;b.bytes.push(...f);b.chunks.push({type:B.Alphanumeric,text:d})}else if(d===D.Byte)d=ca(a,c),b.text+=d.text,b.bytes.push(...d.bytes),b.chunks.push({type:B.Byte,bytes:d.bytes,text:d.text});\nelse if(d===D.Kanji){f=a;d=[];e=f.readBits([8,10,12][c]);for(g=0;g<e;g++)k=f.readBits(13),k=Math.floor(k/192)<<8|k%192,k=7936>k?k+33088:k+49472,d.push(k>>8,k&255);f=(new TextDecoder("shift-jis")).decode(Uint8Array.from(d));b.text+=f;b.bytes.push(...d);b.chunks.push({type:B.Kanji,bytes:d,text:f})}else d===D.StructuredAppend&&b.chunks.push({type:B.StructuredAppend,currentSequence:a.readBits(4),totalSequence:a.readBits(4),parity:a.readBits(8)})}if(0===a.available()||0===a.readBits(a.available()))return b}\nclass G{constructor(a,b){if(0===b.length)throw Error("No coefficients.");this.field=a;let c=b.length;if(1<c&&0===b[0]){let d=1;for(;d<c&&0===b[d];)d++;if(d===c)this.coefficients=a.zero.coefficients;else for(this.coefficients=new Uint8ClampedArray(c-d),a=0;a<this.coefficients.length;a++)this.coefficients[a]=b[d+a]}else this.coefficients=b}degree(){return this.coefficients.length-1}isZero(){return 0===this.coefficients[0]}getCoefficient(a){return this.coefficients[this.coefficients.length-1-a]}addOrSubtract(a){if(this.isZero())return a;\nif(a.isZero())return this;let b=this.coefficients;a=a.coefficients;b.length>a.length&&([b,a]=[a,b]);let c=new Uint8ClampedArray(a.length),d=a.length-b.length;for(var e=0;e<d;e++)c[e]=a[e];for(e=d;e<a.length;e++)c[e]=b[e-d]^a[e];return new G(this.field,c)}multiply(a){if(0===a)return this.field.zero;if(1===a)return this;let b=this.coefficients.length,c=new Uint8ClampedArray(b);for(let d=0;d<b;d++)c[d]=this.field.multiply(this.coefficients[d],a);return new G(this.field,c)}multiplyPoly(a){if(this.isZero()||\na.isZero())return this.field.zero;let b=this.coefficients,c=b.length;a=a.coefficients;let d=a.length,e=new Uint8ClampedArray(c+d-1);for(let f=0;f<c;f++){let g=b[f];for(let h=0;h<d;h++)e[f+h]=H(e[f+h],this.field.multiply(g,a[h]))}return new G(this.field,e)}multiplyByMonomial(a,b){if(0>a)throw Error("Invalid degree less than 0");if(0===b)return this.field.zero;let c=this.coefficients.length;a=new Uint8ClampedArray(c+a);for(let d=0;d<c;d++)a[d]=this.field.multiply(this.coefficients[d],b);return new G(this.field,\na)}evaluateAt(a){let b=0;if(0===a)return this.getCoefficient(0);let c=this.coefficients.length;if(1===a)return this.coefficients.forEach(d=>{b^=d}),b;b=this.coefficients[0];for(let d=1;d<c;d++)b=H(this.field.multiply(a,b),this.coefficients[d]);return b}}function H(a,b){return a^b}\nclass ea{constructor(a,b,c){this.primitive=a;this.size=b;this.generatorBase=c;this.expTable=Array(this.size);this.logTable=Array(this.size);a=1;for(b=0;b<this.size;b++)this.expTable[b]=a,a*=2,a>=this.size&&(a=(a^this.primitive)&this.size-1);for(a=0;a<this.size-1;a++)this.logTable[this.expTable[a]]=a;this.zero=new G(this,Uint8ClampedArray.from([0]));this.one=new G(this,Uint8ClampedArray.from([1]))}multiply(a,b){return 0===a||0===b?0:this.expTable[(this.logTable[a]+this.logTable[b])%(this.size-1)]}inverse(a){if(0===\na)throw Error("Can\'t invert 0");return this.expTable[this.size-this.logTable[a]-1]}buildMonomial(a,b){if(0>a)throw Error("Invalid monomial degree less than 0");if(0===b)return this.zero;a=new Uint8ClampedArray(a+1);a[0]=b;return new G(this,a)}log(a){if(0===a)throw Error("Can\'t take log(0)");return this.logTable[a]}exp(a){return this.expTable[a]}}\nfunction fa(a,b,c,d){b.degree()<c.degree()&&([b,c]=[c,b]);let e=a.zero;for(var f=a.one;c.degree()>=d/2;){var g=b;let h=e;b=c;e=f;if(b.isZero())return null;c=g;f=a.zero;g=b.getCoefficient(b.degree());for(g=a.inverse(g);c.degree()>=b.degree()&&!c.isZero();){let k=c.degree()-b.degree(),m=a.multiply(c.getCoefficient(c.degree()),g);f=f.addOrSubtract(a.buildMonomial(k,m));c=c.addOrSubtract(b.multiplyByMonomial(k,m))}f=f.multiplyPoly(e).addOrSubtract(h);if(c.degree()>=b.degree())return null}d=f.getCoefficient(0);\nif(0===d)return null;a=a.inverse(d);return[f.multiply(a),c.multiply(a)]}\nfunction ha(a,b){let c=new Uint8ClampedArray(a.length);c.set(a);a=new ea(285,256,0);var d=new G(a,c),e=new Uint8ClampedArray(b),f=!1;for(var g=0;g<b;g++){var h=d.evaluateAt(a.exp(g+a.generatorBase));e[e.length-1-g]=h;0!==h&&(f=!0)}if(!f)return c;d=new G(a,e);d=fa(a,a.buildMonomial(b,1),d,b);if(null===d)return null;b=d[0];g=b.degree();if(1===g)b=[b.getCoefficient(1)];else{e=Array(g);f=0;for(h=1;h<a.size&&f<g;h++)0===b.evaluateAt(h)&&(e[f]=a.inverse(h),f++);b=f!==g?null:e}if(null==b)return null;e=d[1];\nf=b.length;d=Array(f);for(g=0;g<f;g++){h=a.inverse(b[g]);let k=1;for(let m=0;m<f;m++)g!==m&&(k=a.multiply(k,H(1,a.multiply(b[m],h))));d[g]=a.multiply(e.evaluateAt(h),a.inverse(k));0!==a.generatorBase&&(d[g]=a.multiply(d[g],h))}for(e=0;e<b.length;e++){f=c.length-1-a.log(b[e]);if(0>f)return null;c[f]^=d[e]}return c}\nlet I=[{infoBits:null,versionNumber:1,alignmentPatternCenters:[],errorCorrectionLevels:[{ecCodewordsPerBlock:7,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:13,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:13}]},{ecCodewordsPerBlock:17,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:9}]}]},{infoBits:null,versionNumber:2,alignmentPatternCenters:[6,18],errorCorrectionLevels:[{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,\ndataCodewordsPerBlock:34}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:28}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]}]},{infoBits:null,versionNumber:3,alignmentPatternCenters:[6,22],errorCorrectionLevels:[{ecCodewordsPerBlock:15,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:55}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:18,\necBlocks:[{numBlocks:2,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:13}]}]},{infoBits:null,versionNumber:4,alignmentPatternCenters:[6,26],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:80}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:32}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:9}]}]},\n{infoBits:null,versionNumber:5,alignmentPatternCenters:[6,30],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:43}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:11},{numBlocks:2,dataCodewordsPerBlock:12}]}]},{infoBits:null,versionNumber:6,alignmentPatternCenters:[6,\n34],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:27}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:31892,versionNumber:7,alignmentPatternCenters:[6,22,38],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:78}]},{ecCodewordsPerBlock:18,\necBlocks:[{numBlocks:4,dataCodewordsPerBlock:31}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:13},{numBlocks:1,dataCodewordsPerBlock:14}]}]},{infoBits:34236,versionNumber:8,alignmentPatternCenters:[6,24,42],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:97}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:38},\n{numBlocks:2,dataCodewordsPerBlock:39}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:18},{numBlocks:2,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:14},{numBlocks:2,dataCodewordsPerBlock:15}]}]},{infoBits:39577,versionNumber:9,alignmentPatternCenters:[6,26,46],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:36},\n{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:12},{numBlocks:4,dataCodewordsPerBlock:13}]}]},{infoBits:42195,versionNumber:10,alignmentPatternCenters:[6,28,50],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68},{numBlocks:2,dataCodewordsPerBlock:69}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,\ndataCodewordsPerBlock:43},{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]}]},{infoBits:48118,versionNumber:11,alignmentPatternCenters:[6,30,54],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:81}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,\ndataCodewordsPerBlock:50},{numBlocks:4,dataCodewordsPerBlock:51}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:22},{numBlocks:4,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:12},{numBlocks:8,dataCodewordsPerBlock:13}]}]},{infoBits:51042,versionNumber:12,alignmentPatternCenters:[6,32,58],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:92},{numBlocks:2,dataCodewordsPerBlock:93}]},\n{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:20},{numBlocks:6,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:55367,versionNumber:13,alignmentPatternCenters:[6,34,62],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:107}]},\n{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:37},{numBlocks:1,dataCodewordsPerBlock:38}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:20},{numBlocks:4,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:11},{numBlocks:4,dataCodewordsPerBlock:12}]}]},{infoBits:58893,versionNumber:14,alignmentPatternCenters:[6,26,46,66],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:115},\n{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:40},{numBlocks:5,dataCodewordsPerBlock:41}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:16},{numBlocks:5,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:5,dataCodewordsPerBlock:13}]}]},{infoBits:63784,versionNumber:15,alignmentPatternCenters:[6,26,48,70],errorCorrectionLevels:[{ecCodewordsPerBlock:22,\necBlocks:[{numBlocks:5,dataCodewordsPerBlock:87},{numBlocks:1,dataCodewordsPerBlock:88}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:41},{numBlocks:5,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:7,dataCodewordsPerBlock:13}]}]},{infoBits:68472,versionNumber:16,alignmentPatternCenters:[6,26,50,\n74],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:98},{numBlocks:1,dataCodewordsPerBlock:99}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:70749,\nversionNumber:17,alignmentPatternCenters:[6,30,54,78],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:1,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22},{numBlocks:15,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:17,\ndataCodewordsPerBlock:15}]}]},{infoBits:76311,versionNumber:18,alignmentPatternCenters:[6,30,56,82],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:120},{numBlocks:1,dataCodewordsPerBlock:121}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:43},{numBlocks:4,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:1,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,\ndataCodewordsPerBlock:14},{numBlocks:19,dataCodewordsPerBlock:15}]}]},{infoBits:79154,versionNumber:19,alignmentPatternCenters:[6,30,58,86],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:113},{numBlocks:4,dataCodewordsPerBlock:114}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:44},{numBlocks:11,dataCodewordsPerBlock:45}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:21},{numBlocks:4,dataCodewordsPerBlock:22}]},\n{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:13},{numBlocks:16,dataCodewordsPerBlock:14}]}]},{infoBits:84390,versionNumber:20,alignmentPatternCenters:[6,34,62,90],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:41},{numBlocks:13,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},\n{numBlocks:5,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:15},{numBlocks:10,dataCodewordsPerBlock:16}]}]},{infoBits:87683,versionNumber:21,alignmentPatternCenters:[6,28,50,72,94],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:116},{numBlocks:4,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},\n{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:16},{numBlocks:6,dataCodewordsPerBlock:17}]}]},{infoBits:92361,versionNumber:22,alignmentPatternCenters:[6,26,50,74,98],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:111},{numBlocks:7,dataCodewordsPerBlock:112}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},\n{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:13}]}]},{infoBits:96236,versionNumber:23,alignmentPatternCenters:[6,30,54,74,102],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:121},{numBlocks:5,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:47},{numBlocks:14,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},\n{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:16,dataCodewordsPerBlock:15},{numBlocks:14,dataCodewordsPerBlock:16}]}]},{infoBits:102084,versionNumber:24,alignmentPatternCenters:[6,28,54,80,106],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:45},{numBlocks:14,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,\necBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:30,dataCodewordsPerBlock:16},{numBlocks:2,dataCodewordsPerBlock:17}]}]},{infoBits:102881,versionNumber:25,alignmentPatternCenters:[6,32,58,84,110],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:106},{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:47},{numBlocks:13,\ndataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:110507,versionNumber:26,alignmentPatternCenters:[6,30,58,86,114],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:114},{numBlocks:2,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,\ndataCodewordsPerBlock:46},{numBlocks:4,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:28,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:33,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]}]},{infoBits:110734,versionNumber:27,alignmentPatternCenters:[6,34,62,90,118],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},\n{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:23},{numBlocks:26,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:15},{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:117786,versionNumber:28,alignmentPatternCenters:[6,26,50,74,98,122],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:117},\n{numBlocks:10,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:45},{numBlocks:23,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:24},{numBlocks:31,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:31,dataCodewordsPerBlock:16}]}]},{infoBits:119615,versionNumber:29,alignmentPatternCenters:[6,30,54,78,102,126],errorCorrectionLevels:[{ecCodewordsPerBlock:30,\necBlocks:[{numBlocks:7,dataCodewordsPerBlock:116},{numBlocks:7,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:21,dataCodewordsPerBlock:45},{numBlocks:7,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:23},{numBlocks:37,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:15},{numBlocks:26,dataCodewordsPerBlock:16}]}]},{infoBits:126325,versionNumber:30,alignmentPatternCenters:[6,\n26,52,78,104,130],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:115},{numBlocks:10,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:47},{numBlocks:10,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:25,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},{numBlocks:25,dataCodewordsPerBlock:16}]}]},\n{infoBits:127568,versionNumber:31,alignmentPatternCenters:[6,30,56,82,108,134],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},{numBlocks:3,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:46},{numBlocks:29,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:24},{numBlocks:1,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},\n{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:133589,versionNumber:32,alignmentPatternCenters:[6,34,60,86,112,138],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:24},{numBlocks:35,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,\ndataCodewordsPerBlock:15},{numBlocks:35,dataCodewordsPerBlock:16}]}]},{infoBits:136944,versionNumber:33,alignmentPatternCenters:[6,30,58,86,114,142],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:21,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:24},{numBlocks:19,dataCodewordsPerBlock:25}]},\n{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:141498,versionNumber:34,alignmentPatternCenters:[6,34,62,90,118,146],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},{numBlocks:6,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:44,\ndataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:59,dataCodewordsPerBlock:16},{numBlocks:1,dataCodewordsPerBlock:17}]}]},{infoBits:145311,versionNumber:35,alignmentPatternCenters:[6,30,54,78,102,126,150],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:121},{numBlocks:7,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:47},{numBlocks:26,dataCodewordsPerBlock:48}]},\n{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:39,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:41,dataCodewordsPerBlock:16}]}]},{infoBits:150283,versionNumber:36,alignmentPatternCenters:[6,24,50,76,102,128,154],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:121},{numBlocks:14,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,\ndataCodewordsPerBlock:47},{numBlocks:34,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:46,dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:64,dataCodewordsPerBlock:16}]}]},{infoBits:152622,versionNumber:37,alignmentPatternCenters:[6,28,54,80,106,132,158],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},\n{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:46},{numBlocks:14,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:49,dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:24,dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:158308,versionNumber:38,alignmentPatternCenters:[6,32,58,84,110,136,162],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,\ndataCodewordsPerBlock:122},{numBlocks:18,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:46},{numBlocks:32,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:48,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:15},{numBlocks:32,dataCodewordsPerBlock:16}]}]},{infoBits:161089,versionNumber:39,alignmentPatternCenters:[6,26,54,82,110,138,166],\nerrorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:40,dataCodewordsPerBlock:47},{numBlocks:7,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:43,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:15},{numBlocks:67,dataCodewordsPerBlock:16}]}]},{infoBits:167017,\nversionNumber:40,alignmentPatternCenters:[6,30,58,86,114,142,170],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:118},{numBlocks:6,dataCodewordsPerBlock:119}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:18,dataCodewordsPerBlock:47},{numBlocks:31,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:24},{numBlocks:34,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:15},\n{numBlocks:61,dataCodewordsPerBlock:16}]}]}];function J(a,b){a^=b;for(b=0;a;)b++,a&=a-1;return b}function K(a,b){return b<<1|a}\nlet ia=[{bits:21522,formatInfo:{errorCorrectionLevel:1,dataMask:0}},{bits:20773,formatInfo:{errorCorrectionLevel:1,dataMask:1}},{bits:24188,formatInfo:{errorCorrectionLevel:1,dataMask:2}},{bits:23371,formatInfo:{errorCorrectionLevel:1,dataMask:3}},{bits:17913,formatInfo:{errorCorrectionLevel:1,dataMask:4}},{bits:16590,formatInfo:{errorCorrectionLevel:1,dataMask:5}},{bits:20375,formatInfo:{errorCorrectionLevel:1,dataMask:6}},{bits:19104,formatInfo:{errorCorrectionLevel:1,dataMask:7}},{bits:30660,formatInfo:{errorCorrectionLevel:0,\ndataMask:0}},{bits:29427,formatInfo:{errorCorrectionLevel:0,dataMask:1}},{bits:32170,formatInfo:{errorCorrectionLevel:0,dataMask:2}},{bits:30877,formatInfo:{errorCorrectionLevel:0,dataMask:3}},{bits:26159,formatInfo:{errorCorrectionLevel:0,dataMask:4}},{bits:25368,formatInfo:{errorCorrectionLevel:0,dataMask:5}},{bits:27713,formatInfo:{errorCorrectionLevel:0,dataMask:6}},{bits:26998,formatInfo:{errorCorrectionLevel:0,dataMask:7}},{bits:5769,formatInfo:{errorCorrectionLevel:3,dataMask:0}},{bits:5054,\nformatInfo:{errorCorrectionLevel:3,dataMask:1}},{bits:7399,formatInfo:{errorCorrectionLevel:3,dataMask:2}},{bits:6608,formatInfo:{errorCorrectionLevel:3,dataMask:3}},{bits:1890,formatInfo:{errorCorrectionLevel:3,dataMask:4}},{bits:597,formatInfo:{errorCorrectionLevel:3,dataMask:5}},{bits:3340,formatInfo:{errorCorrectionLevel:3,dataMask:6}},{bits:2107,formatInfo:{errorCorrectionLevel:3,dataMask:7}},{bits:13663,formatInfo:{errorCorrectionLevel:2,dataMask:0}},{bits:12392,formatInfo:{errorCorrectionLevel:2,\ndataMask:1}},{bits:16177,formatInfo:{errorCorrectionLevel:2,dataMask:2}},{bits:14854,formatInfo:{errorCorrectionLevel:2,dataMask:3}},{bits:9396,formatInfo:{errorCorrectionLevel:2,dataMask:4}},{bits:8579,formatInfo:{errorCorrectionLevel:2,dataMask:5}},{bits:11994,formatInfo:{errorCorrectionLevel:2,dataMask:6}},{bits:11245,formatInfo:{errorCorrectionLevel:2,dataMask:7}}],ja=[a=>0===(a.y+a.x)%2,a=>0===a.y%2,a=>0===a.x%3,a=>0===(a.y+a.x)%3,a=>0===(Math.floor(a.y/2)+Math.floor(a.x/3))%2,a=>0===a.x*a.y%\n2+a.x*a.y%3,a=>0===(a.y*a.x%2+a.y*a.x%3)%2,a=>0===((a.y+a.x)%2+a.y*a.x%3)%2];\nfunction ka(a,b,c){c=ja[c.dataMask];let d=a.height;var e=17+4*b.versionNumber;let f=x.createEmpty(e,e);f.setRegion(0,0,9,9,!0);f.setRegion(e-8,0,8,9,!0);f.setRegion(0,e-8,9,8,!0);for(var g of b.alignmentPatternCenters)for(var h of b.alignmentPatternCenters)6===g&&6===h||6===g&&h===e-7||g===e-7&&6===h||f.setRegion(g-2,h-2,5,5,!0);f.setRegion(6,9,1,e-17,!0);f.setRegion(9,6,e-17,1,!0);6<b.versionNumber&&(f.setRegion(e-11,0,3,6,!0),f.setRegion(0,e-11,6,3,!0));b=[];h=g=0;e=!0;for(let k=d-1;0<k;k-=2){6===\nk&&k--;for(let m=0;m<d;m++){let l=e?d-1-m:m;for(let n=0;2>n;n++){let q=k-n;if(!f.get(q,l)){h++;let r=a.get(q,l);c({y:l,x:q})&&(r=!r);g=g<<1|r;8===h&&(b.push(g),g=h=0)}}}e=!e}return b}\nfunction la(a){var b=a.height,c=Math.floor((b-17)/4);if(6>=c)return I[c-1];c=0;for(var d=5;0<=d;d--)for(var e=b-9;e>=b-11;e--)c=K(a.get(e,d),c);d=0;for(e=5;0<=e;e--)for(let g=b-9;g>=b-11;g--)d=K(a.get(e,g),d);a=Infinity;let f;for(let g of I){if(g.infoBits===c||g.infoBits===d)return g;b=J(c,g.infoBits);b<a&&(f=g,a=b);b=J(d,g.infoBits);b<a&&(f=g,a=b)}if(3>=a)return f}\nfunction ma(a){let b=0;for(var c=0;8>=c;c++)6!==c&&(b=K(a.get(c,8),b));for(c=7;0<=c;c--)6!==c&&(b=K(a.get(8,c),b));var d=a.height;c=0;for(var e=d-1;e>=d-7;e--)c=K(a.get(8,e),c);for(e=d-8;e<d;e++)c=K(a.get(e,8),c);a=Infinity;d=null;for(let {bits:f,formatInfo:g}of ia){if(f===b||f===c)return g;e=J(b,f);e<a&&(d=g,a=e);b!==c&&(e=J(c,f),e<a&&(d=g,a=e))}return 3>=a?d:null}\nfunction na(a,b,c){let d=b.errorCorrectionLevels[c],e=[],f=0;d.ecBlocks.forEach(h=>{for(let k=0;k<h.numBlocks;k++)e.push({numDataCodewords:h.dataCodewordsPerBlock,codewords:[]}),f+=h.dataCodewordsPerBlock+d.ecCodewordsPerBlock});if(a.length<f)return null;a=a.slice(0,f);b=d.ecBlocks[0].dataCodewordsPerBlock;for(c=0;c<b;c++)for(var g of e)g.codewords.push(a.shift());if(1<d.ecBlocks.length)for(g=d.ecBlocks[0].numBlocks,b=d.ecBlocks[1].numBlocks,c=0;c<b;c++)e[g+c].codewords.push(a.shift());for(;0<a.length;)for(let h of 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ta={inversionAttempts:"attemptBoth",greyScaleWeights:{red:.2126,green:.7152,blue:.0722,useIntegerApproximation:!1},canOverwriteImage:!0};function W(a,b){Object.keys(b).forEach(c=>{a[c]=b[c]})}\nfunction X(a,b,c,d={}){let e=Object.create(null);W(e,ta);W(e,d);d="onlyInvert"===e.inversionAttempts||"invertFirst"===e.inversionAttempts;var f="attemptBoth"===e.inversionAttempts||d;var g=e.greyScaleWeights,h=e.canOverwriteImage,k=b*c;if(a.length!==4*k)throw Error("Malformed data passed to binarizer.");var m=0;if(h){var l=new Uint8ClampedArray(a.buffer,m,k);m+=k}l=new A(b,c,l);if(g.useIntegerApproximation)for(var n=0;n<c;n++)for(var q=0;q<b;q++){var r=4*(n*b+q);l.set(q,n,g.red*a[r]+g.green*a[r+1]+\ng.blue*a[r+2]+128>>8)}else for(n=0;n<c;n++)for(q=0;q<b;q++)r=4*(n*b+q),l.set(q,n,g.red*a[r]+g.green*a[r+1]+g.blue*a[r+2]);g=Math.ceil(b/8);n=Math.ceil(c/8);q=g*n;if(h){var u=new Uint8ClampedArray(a.buffer,m,q);m+=q}u=new A(g,n,u);for(q=0;q<n;q++)for(r=0;r<g;r++){var p=Infinity,t=0;for(var 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-{type:"application/javascript"}))});return c})
-//# sourceMappingURL=qr-scanner.legacy.min.js.map
diff --git a/qr-scanner.legacy.min.js.map b/qr-scanner.legacy.min.js.map
deleted file mode 100644
index b789864..0000000
--- a/qr-scanner.legacy.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"qr-scanner.legacy.min.js","sources":[],"sourcesContent":[],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/qr-scanner.min.js b/qr-scanner.min.js
deleted file mode 100644
index 325ef4a..0000000
--- a/qr-scanner.min.js
+++ /dev/null
@@ -1,32 +0,0 @@
-class e{constructor(a,b,c,d,f){this._legacyCanvasSize=e.DEFAULT_CANVAS_SIZE;this._preferredCamera="environment";this._maxScansPerSecond=25;this._lastScanTimestamp=-1;this._destroyed=this._flashOn=this._paused=this._active=!1;this.$video=a;this.$canvas=document.createElement("canvas");c&&"object"===typeof c?this._onDecode=b:(c||d||f?console.warn("You're using a deprecated version of the QrScanner constructor which will be removed in the future"):console.warn("Note that the type of the scan result passed to onDecode will change in the future. To already switch to the new api today, you can pass returnDetailedScanResult: true."),
-this._legacyOnDecode=b);b="object"===typeof c?c:{};this._onDecodeError=b.onDecodeError||("function"===typeof c?c:this._onDecodeError);this._calculateScanRegion=b.calculateScanRegion||("function"===typeof d?d:this._calculateScanRegion);this._preferredCamera=b.preferredCamera||f||this._preferredCamera;this._legacyCanvasSize="number"===typeof c?c:"number"===typeof d?d:this._legacyCanvasSize;this._maxScansPerSecond=b.maxScansPerSecond||this._maxScansPerSecond;this._onPlay=this._onPlay.bind(this);this._onLoadedMetaData=
-this._onLoadedMetaData.bind(this);this._onVisibilityChange=this._onVisibilityChange.bind(this);this._updateOverlay=this._updateOverlay.bind(this);a.disablePictureInPicture=!0;a.playsInline=!0;a.muted=!0;let h=!1;a.hidden&&(a.hidden=!1,h=!0);document.body.contains(a)||(document.body.appendChild(a),h=!0);c=a.parentElement;if(b.highlightScanRegion||b.highlightCodeOutline){d=!!b.overlay;this.$overlay=b.overlay||document.createElement("div");f=this.$overlay.style;f.position="absolute";f.display="none";
-f.pointerEvents="none";this.$overlay.classList.add("scan-region-highlight");if(!d&&b.highlightScanRegion){this.$overlay.innerHTML='<svg class="scan-region-highlight-svg" viewBox="0 0 238 238" preserveAspectRatio="none" style="position:absolute;width:100%;height:100%;left:0;top:0;fill:none;stroke:#e9b213;stroke-width:4;stroke-linecap:round;stroke-linejoin:round"><path d="M31 2H10a8 8 0 0 0-8 8v21M207 2h21a8 8 0 0 1 8 8v21m0 176v21a8 8 0 0 1-8 8h-21m-176 0H10a8 8 0 0 1-8-8v-21"/></svg>';try{this.$overlay.firstElementChild.animate({transform:["scale(.98)",
-"scale(1.01)"]},{duration:400,iterations:Infinity,direction:"alternate",easing:"ease-in-out"})}catch(m){}c.insertBefore(this.$overlay,this.$video.nextSibling)}b.highlightCodeOutline&&(this.$overlay.insertAdjacentHTML("beforeend",'<svg class="code-outline-highlight" preserveAspectRatio="none" style="display:none;width:100%;height:100%;fill:none;stroke:#e9b213;stroke-width:5;stroke-dasharray:25;stroke-linecap:round;stroke-linejoin:round"><polygon/></svg>'),this.$codeOutlineHighlight=this.$overlay.lastElementChild)}this._scanRegion=
-this._calculateScanRegion(a);requestAnimationFrame(()=>{let m=window.getComputedStyle(a);"none"===m.display&&(a.style.setProperty("display","block","important"),h=!0);"visible"!==m.visibility&&(a.style.setProperty("visibility","visible","important"),h=!0);h&&(console.warn("QrScanner has overwritten the video hiding style to avoid Safari stopping the playback."),a.style.opacity="0",a.style.width="0",a.style.height="0",this.$overlay&&this.$overlay.parentElement&&this.$overlay.parentElement.removeChild(this.$overlay),
-delete this.$overlay,delete this.$codeOutlineHighlight);this.$overlay&&this._updateOverlay()});a.addEventListener("play",this._onPlay);a.addEventListener("loadedmetadata",this._onLoadedMetaData);document.addEventListener("visibilitychange",this._onVisibilityChange);window.addEventListener("resize",this._updateOverlay);this._qrEnginePromise=e.createQrEngine()}static set WORKER_PATH(a){console.warn("Setting QrScanner.WORKER_PATH is not required and not supported anymore. Have a look at the README for new setup instructions.")}static async hasCamera(){try{return!!(await e.listCameras(!1)).length}catch(a){return!1}}static async listCameras(a=
-!1){if(!navigator.mediaDevices)return[];let b=async()=>(await navigator.mediaDevices.enumerateDevices()).filter(d=>"videoinput"===d.kind),c;try{a&&(await b()).every(d=>!d.label)&&(c=await navigator.mediaDevices.getUserMedia({audio:!1,video:!0}))}catch(d){}try{return(await b()).map((d,f)=>({id:d.deviceId,label:d.label||(0===f?"Default Camera":`Camera ${f+1}`)}))}finally{c&&(console.warn("Call listCameras after successfully starting a QR scanner to avoid creating a temporary video stream"),e._stopVideoStream(c))}}async hasFlash(){let a;
-try{if(this.$video.srcObject){if(!(this.$video.srcObject instanceof MediaStream))return!1;a=this.$video.srcObject}else a=(await this._getCameraStream()).stream;return"torch"in a.getVideoTracks()[0].getSettings()}catch(b){return!1}finally{a&&a!==this.$video.srcObject&&(console.warn("Call hasFlash after successfully starting the scanner to avoid creating a temporary video stream"),e._stopVideoStream(a))}}isFlashOn(){return this._flashOn}async toggleFlash(){this._flashOn?await this.turnFlashOff():await this.turnFlashOn()}async turnFlashOn(){if(!this._flashOn&&
-!this._destroyed&&(this._flashOn=!0,this._active&&!this._paused))try{if(!await this.hasFlash())throw"No flash available";await this.$video.srcObject.getVideoTracks()[0].applyConstraints({advanced:[{torch:!0}]})}catch(a){throw this._flashOn=!1,a;}}async turnFlashOff(){this._flashOn&&(this._flashOn=!1,await this._restartVideoStream())}destroy(){this.$video.removeEventListener("loadedmetadata",this._onLoadedMetaData);this.$video.removeEventListener("play",this._onPlay);document.removeEventListener("visibilitychange",
-this._onVisibilityChange);window.removeEventListener("resize",this._updateOverlay);this._destroyed=!0;this._flashOn=!1;this.stop();e._postWorkerMessage(this._qrEnginePromise,"close")}async start(){if(this._destroyed)throw Error("The QR scanner can not be started as it had been destroyed.");if(!this._active||this._paused)if("https:"!==window.location.protocol&&console.warn("The camera stream is only accessible if the page is transferred via https."),this._active=!0,!document.hidden)if(this._paused=
-!1,this.$video.srcObject)await this.$video.play();else try{let {stream:a,facingMode:b}=await this._getCameraStream();!this._active||this._paused?e._stopVideoStream(a):(this._setVideoMirror(b),this.$video.srcObject=a,await this.$video.play(),this._flashOn&&(this._flashOn=!1,this.turnFlashOn().catch(()=>{})))}catch(a){if(!this._paused)throw this._active=!1,a;}}stop(){this.pause();this._active=!1}async pause(a=!1){this._paused=!0;if(!this._active)return!0;this.$video.pause();this.$overlay&&(this.$overlay.style.display=
-"none");let b=()=>{this.$video.srcObject instanceof MediaStream&&(e._stopVideoStream(this.$video.srcObject),this.$video.srcObject=null)};if(a)return b(),!0;await new Promise(c=>setTimeout(c,300));if(!this._paused)return!1;b();return!0}async setCamera(a){a!==this._preferredCamera&&(this._preferredCamera=a,await this._restartVideoStream())}static async scanImage(a,b,c,d,f=!1,h=!1){let m,n=!1;b&&("scanRegion"in b||"qrEngine"in b||"canvas"in b||"disallowCanvasResizing"in b||"alsoTryWithoutScanRegion"in
-b||"returnDetailedScanResult"in b)?(m=b.scanRegion,c=b.qrEngine,d=b.canvas,f=b.disallowCanvasResizing||!1,h=b.alsoTryWithoutScanRegion||!1,n=!0):b||c||d||f||h?console.warn("You're using a deprecated api for scanImage which will be removed in the future."):console.warn("Note that the return type of scanImage will change in the future. To already switch to the new api today, you can pass returnDetailedScanResult: true.");b=!!c;try{let p,l;[c,p]=await Promise.all([c||e.createQrEngine(),e._loadImage(a)]);
-[d,l]=e._drawToCanvas(p,m,d,f);let q;if(c instanceof Worker){let g=c;b||e._postWorkerMessageSync(g,"inversionMode","both");q=await new Promise((k,v)=>{let w,u,t,y=-1;u=r=>{r.data.id===y&&(g.removeEventListener("message",u),g.removeEventListener("error",t),clearTimeout(w),null!==r.data.data?k({data:r.data.data,cornerPoints:e._convertPoints(r.data.cornerPoints,m),bytes:r.data.bytes}):v(e.NO_QR_CODE_FOUND))};t=r=>{g.removeEventListener("message",u);g.removeEventListener("error",t);clearTimeout(w);v("Scanner error: "+
-(r?r.message||r:"Unknown Error"))};g.addEventListener("message",u);g.addEventListener("error",t);w=setTimeout(()=>t("timeout"),1E4);let x=l.getImageData(0,0,d.width,d.height);y=e._postWorkerMessageSync(g,"decode",x,[x.data.buffer])})}else q=await Promise.race([new Promise((g,k)=>window.setTimeout(()=>k("Scanner error: timeout"),1E4)),(async()=>{try{var [g]=await c.detect(d);if(!g)throw e.NO_QR_CODE_FOUND;return{data:g.rawValue,cornerPoints:e._convertPoints(g.cornerPoints,m),bytes:g.rawValue.split("").map(k=>
-k.charCodeAt(0))}}catch(k){g=k.message||k;if(/not implemented|service unavailable/.test(g))return e._disableBarcodeDetector=!0,e.scanImage(a,{scanRegion:m,canvas:d,disallowCanvasResizing:f,alsoTryWithoutScanRegion:h});throw`Scanner error: ${g}`;}})()]);return n?q:q.data}catch(p){if(!m||!h)throw p;let l=await e.scanImage(a,{qrEngine:c,canvas:d,disallowCanvasResizing:f});return n?l:l.data}finally{b||e._postWorkerMessage(c,"close")}}setGrayscaleWeights(a,b,c,d=!0){e._postWorkerMessage(this._qrEnginePromise,
-"grayscaleWeights",{red:a,green:b,blue:c,useIntegerApproximation:d})}setInversionMode(a){e._postWorkerMessage(this._qrEnginePromise,"inversionMode",a)}static async createQrEngine(a){a&&console.warn("Specifying a worker path is not required and not supported anymore.");a=()=>import("./qr-scanner-worker.min.js").then(c=>c.createWorker());if(!(!e._disableBarcodeDetector&&"BarcodeDetector"in window&&BarcodeDetector.getSupportedFormats&&(await BarcodeDetector.getSupportedFormats()).includes("qr_code")))return a();
-let b=navigator.userAgentData;return b&&b.brands.some(({brand:c})=>/Chromium/i.test(c))&&/mac ?OS/i.test(b.platform)&&await b.getHighEntropyValues(["architecture","platformVersion"]).then(({architecture:c,platformVersion:d})=>/arm/i.test(c||"arm")&&13<=parseInt(d||"13")).catch(()=>!0)?a():new BarcodeDetector({formats:["qr_code"]})}_onPlay(){this._scanRegion=this._calculateScanRegion(this.$video);this._updateOverlay();this.$overlay&&(this.$overlay.style.display="");this._scanFrame()}_onLoadedMetaData(){this._scanRegion=
-this._calculateScanRegion(this.$video);this._updateOverlay()}_onVisibilityChange(){document.hidden?this.pause():this._active&&this.start()}_calculateScanRegion(a){let b=Math.round(2/3*Math.min(a.videoWidth,a.videoHeight));return{x:Math.round((a.videoWidth-b)/2),y:Math.round((a.videoHeight-b)/2),width:b,height:b,downScaledWidth:this._legacyCanvasSize,downScaledHeight:this._legacyCanvasSize}}_updateOverlay(){requestAnimationFrame(()=>{if(this.$overlay){var a=this.$video,b=a.videoWidth,c=a.videoHeight,
-d=a.offsetWidth,f=a.offsetHeight,h=a.offsetLeft,m=a.offsetTop,n=window.getComputedStyle(a),p=n.objectFit,l=b/c,q=d/f;switch(p){case "none":var g=b;var k=c;break;case "fill":g=d;k=f;break;default:("cover"===p?l>q:l<q)?(k=f,g=k*l):(g=d,k=g/l),"scale-down"===p&&(g=Math.min(g,b),k=Math.min(k,c))}var [v,w]=n.objectPosition.split(" ").map((t,y)=>{const x=parseFloat(t);return t.endsWith("%")?(y?f-k:d-g)*x/100:x});n=this._scanRegion.width||b;q=this._scanRegion.height||c;p=this._scanRegion.x||0;var u=this._scanRegion.y||
-0;l=this.$overlay.style;l.width=`${n/b*g}px`;l.height=`${q/c*k}px`;l.top=`${m+w+u/c*k}px`;c=/scaleX\(-1\)/.test(a.style.transform);l.left=`${h+(c?d-v-g:v)+(c?b-p-n:p)/b*g}px`;l.transform=a.style.transform}})}static _convertPoints(a,b){if(!b)return a;let c=b.x||0,d=b.y||0,f=b.width&&b.downScaledWidth?b.width/b.downScaledWidth:1;b=b.height&&b.downScaledHeight?b.height/b.downScaledHeight:1;for(let h of a)h.x=h.x*f+c,h.y=h.y*b+d;return a}_scanFrame(){!this._active||this.$video.paused||this.$video.ended||
-("requestVideoFrameCallback"in this.$video?this.$video.requestVideoFrameCallback.bind(this.$video):requestAnimationFrame)(async()=>{if(!(1>=this.$video.readyState)){var a=Date.now()-this._lastScanTimestamp,b=1E3/this._maxScansPerSecond;a<b&&await new Promise(d=>setTimeout(d,b-a));this._lastScanTimestamp=Date.now();try{var c=await e.scanImage(this.$video,{scanRegion:this._scanRegion,qrEngine:this._qrEnginePromise,canvas:this.$canvas})}catch(d){if(!this._active)return;this._onDecodeError(d)}!e._disableBarcodeDetector||
-await this._qrEnginePromise instanceof Worker||(this._qrEnginePromise=e.createQrEngine());c?(this._onDecode?this._onDecode(c):this._legacyOnDecode&&this._legacyOnDecode(c.data),this.$codeOutlineHighlight&&(clearTimeout(this._codeOutlineHighlightRemovalTimeout),this._codeOutlineHighlightRemovalTimeout=void 0,this.$codeOutlineHighlight.setAttribute("viewBox",`${this._scanRegion.x||0} `+`${this._scanRegion.y||0} `+`${this._scanRegion.width||this.$video.videoWidth} `+`${this._scanRegion.height||this.$video.videoHeight}`),
-this.$codeOutlineHighlight.firstElementChild.setAttribute("points",c.cornerPoints.map(({x:d,y:f})=>`${d},${f}`).join(" ")),this.$codeOutlineHighlight.style.display="")):this.$codeOutlineHighlight&&!this._codeOutlineHighlightRemovalTimeout&&(this._codeOutlineHighlightRemovalTimeout=setTimeout(()=>this.$codeOutlineHighlight.style.display="none",100))}this._scanFrame()})}_onDecodeError(a){a!==e.NO_QR_CODE_FOUND&&console.log(a)}async _getCameraStream(){if(!navigator.mediaDevices)throw"Camera not found.";
-let a=/^(environment|user)$/.test(this._preferredCamera)?"facingMode":"deviceId",b=[{width:{min:1024}},{width:{min:768}},{}],c=b.map(d=>Object.assign({},d,{[a]:{exact:this._preferredCamera}}));for(let d of[...c,...b])try{let f=await navigator.mediaDevices.getUserMedia({video:d,audio:!1}),h=this._getFacingMode(f)||(d.facingMode?this._preferredCamera:"environment"===this._preferredCamera?"user":"environment");return{stream:f,facingMode:h}}catch(f){}throw"Camera not found.";}async _restartVideoStream(){let a=
-this._paused;await this.pause(!0)&&!a&&this._active&&await this.start()}static _stopVideoStream(a){for(let b of a.getTracks())b.stop(),a.removeTrack(b)}_setVideoMirror(a){this.$video.style.transform="scaleX("+("user"===a?-1:1)+")"}_getFacingMode(a){return(a=a.getVideoTracks()[0])?/rear|back|environment/i.test(a.label)?"environment":/front|user|face/i.test(a.label)?"user":null:null}static _drawToCanvas(a,b,c,d=!1){c=c||document.createElement("canvas");let f=b&&b.x?b.x:0,h=b&&b.y?b.y:0,m=b&&b.width?
-b.width:a.videoWidth||a.width,n=b&&b.height?b.height:a.videoHeight||a.height;d||(d=b&&b.downScaledWidth?b.downScaledWidth:m,b=b&&b.downScaledHeight?b.downScaledHeight:n,c.width!==d&&(c.width=d),c.height!==b&&(c.height=b));b=c.getContext("2d",{alpha:!1});b.imageSmoothingEnabled=!1;b.drawImage(a,f,h,m,n,0,0,c.width,c.height);return[c,b]}static async _loadImage(a){if(a instanceof Image)return await e._awaitImageLoad(a),a;if(a instanceof HTMLVideoElement||a instanceof HTMLCanvasElement||a instanceof SVGImageElement||
-"OffscreenCanvas"in window&&a instanceof OffscreenCanvas||"ImageBitmap"in window&&a instanceof ImageBitmap)return a;if(a instanceof File||a instanceof Blob||a instanceof URL||"string"===typeof a){let b=new Image;b.src=a instanceof File||a instanceof Blob?URL.createObjectURL(a):a.toString();try{return await e._awaitImageLoad(b),b}finally{(a instanceof File||a instanceof Blob)&&URL.revokeObjectURL(b.src)}}else throw"Unsupported image type.";}static async _awaitImageLoad(a){a.complete&&0!==a.naturalWidth||
-await new Promise((b,c)=>{let d=f=>{a.removeEventListener("load",d);a.removeEventListener("error",d);f instanceof ErrorEvent?c("Image load error"):b()};a.addEventListener("load",d);a.addEventListener("error",d)})}static async _postWorkerMessage(a,b,c,d){return e._postWorkerMessageSync(await a,b,c,d)}static _postWorkerMessageSync(a,b,c,d){if(!(a instanceof Worker))return-1;let f=e._workerMessageId++;a.postMessage({id:f,type:b,data:c},d);return f}}e.DEFAULT_CANVAS_SIZE=400;e.NO_QR_CODE_FOUND="No QR code found";
-e._disableBarcodeDetector=!1;e._workerMessageId=0;export default e
-//# sourceMappingURL=qr-scanner.min.js.map
diff --git a/qr-scanner.min.js.map b/qr-scanner.min.js.map
deleted file mode 100644
index 9f95e48..0000000
--- a/qr-scanner.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"qr-scanner.min.js","sources":["src/qr-scanner.ts"],"sourcesContent":["class QrScanner {\n    static readonly DEFAULT_CANVAS_SIZE = 400;\n    static readonly NO_QR_CODE_FOUND = 'No QR code found';\n    private static _disableBarcodeDetector = false;\n    private static _workerMessageId = 0;\n\n    /** @deprecated */\n    static set WORKER_PATH(workerPath: string) {\n        console.warn('Setting QrScanner.WORKER_PATH is not required and not supported anymore. '\n            + 'Have a look at the README for new setup instructions.');\n    }\n\n    static async hasCamera(): Promise<boolean> {\n        try {\n            return !!(await QrScanner.listCameras(false)).length;\n        } catch (e) {\n            return false;\n        }\n    }\n\n    static async listCameras(requestLabels = false): Promise<Array<QrScanner.Camera>> {\n        if (!navigator.mediaDevices) return [];\n\n        const enumerateCameras = async (): Promise<Array<MediaDeviceInfo>> =>\n            (await navigator.mediaDevices.enumerateDevices()).filter((device) => device.kind === 'videoinput');\n\n        // Note that enumerateDevices can always be called and does not prompt the user for permission.\n        // However, enumerateDevices only includes device labels if served via https and an active media stream exists\n        // or permission to access the camera was given. Therefore, if we're not getting labels but labels are requested\n        // ask for camera permission by opening a stream.\n        let openedStream: MediaStream | undefined;\n        try {\n            if (requestLabels && (await enumerateCameras()).every((camera) => !camera.label)) {\n                openedStream = await navigator.mediaDevices.getUserMedia({ audio: false, video: true });\n            }\n        } catch (e) {\n            // Fail gracefully, especially if the device has no camera or on mobile when the camera is already in use\n            // and some browsers disallow a second stream.\n        }\n\n        try {\n            return (await enumerateCameras()).map((camera, i) => ({\n                id: camera.deviceId,\n                label: camera.label || (i === 0 ? 'Default Camera' : `Camera ${i + 1}`),\n            }));\n        } finally {\n            // close the stream we just opened for getting camera access for listing the device labels\n            if (openedStream) {\n                console.warn('Call listCameras after successfully starting a QR scanner to avoid creating '\n                    + 'a temporary video stream');\n                QrScanner._stopVideoStream(openedStream);\n            }\n        }\n    }\n\n    readonly $video: HTMLVideoElement;\n    readonly $canvas: HTMLCanvasElement;\n    readonly $overlay?: HTMLDivElement;\n    private readonly $codeOutlineHighlight?: SVGSVGElement;\n    private readonly _onDecode?: (result: QrScanner.ScanResult) => void;\n    private readonly _legacyOnDecode?: (result: string) => void;\n    private readonly _legacyCanvasSize: number = QrScanner.DEFAULT_CANVAS_SIZE;\n    private _preferredCamera: QrScanner.FacingMode | QrScanner.DeviceId = 'environment';\n    private readonly _maxScansPerSecond: number = 25;\n    private _lastScanTimestamp: number = -1;\n    private _scanRegion: QrScanner.ScanRegion;\n    private _codeOutlineHighlightRemovalTimeout?: number;\n    private _qrEnginePromise: Promise<Worker | BarcodeDetector>\n    private _active: boolean = false;\n    private _paused: boolean = false;\n    private _flashOn: boolean = false;\n    private _destroyed: boolean = false;\n\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: QrScanner.ScanResult) => void,\n        options: {\n            onDecodeError?: (error: Error | string) => void,\n            calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n            preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n            maxScansPerSecond?: number;\n            highlightScanRegion?: boolean,\n            highlightCodeOutline?: boolean,\n            overlay?: HTMLDivElement,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n    );\n    /** @deprecated */\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: string) => void,\n        onDecodeError?: (error: Error | string) => void,\n        calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    );\n    /** @deprecated */\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: string) => void,\n        onDecodeError?: (error: Error | string) => void,\n        canvasSize?: number,\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    );\n    /** @deprecated */\n    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, canvasSize?: number);\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: ((result: QrScanner.ScanResult) => void) | ((result: string) => void),\n        canvasSizeOrOnDecodeErrorOrOptions?: number | ((error: Error | string) => void) | {\n            onDecodeError?: (error: Error | string) => void,\n            calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n            preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n            maxScansPerSecond?: number;\n            highlightScanRegion?: boolean,\n            highlightCodeOutline?: boolean,\n            overlay?: HTMLDivElement,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n        canvasSizeOrCalculateScanRegion?: number | ((video: HTMLVideoElement) => QrScanner.ScanRegion),\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    ) {\n        this.$video = video;\n        this.$canvas = document.createElement('canvas');\n\n        if (canvasSizeOrOnDecodeErrorOrOptions && typeof canvasSizeOrOnDecodeErrorOrOptions === 'object') {\n            // we got an options object using the new api\n            this._onDecode = onDecode as QrScanner['_onDecode'];\n        } else {\n            if (canvasSizeOrOnDecodeErrorOrOptions || canvasSizeOrCalculateScanRegion || preferredCamera) {\n                console.warn('You\\'re using a deprecated version of the QrScanner constructor which will be removed in '\n                    + 'the future');\n            } else {\n                // Only video and onDecode were specified and we can't distinguish between new or old api usage. For\n                // backwards compatibility we have to assume the old api for now. The options object is marked as non-\n                // optional in the parameter list above to make clear that ScanResult instead of string is only passed\n                // if an options object was provided. However, in the future once legacy support is removed, the options\n                // object should become optional.\n                console.warn('Note that the type of the scan result passed to onDecode will change in the future. '\n                    + 'To already switch to the new api today, you can pass returnDetailedScanResult: true.');\n            }\n            this._legacyOnDecode = onDecode as QrScanner['_legacyOnDecode'];\n        }\n\n        const options = typeof canvasSizeOrOnDecodeErrorOrOptions === 'object'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : {};\n        this._onDecodeError = options.onDecodeError || (typeof canvasSizeOrOnDecodeErrorOrOptions === 'function'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : this._onDecodeError);\n        this._calculateScanRegion = options.calculateScanRegion || (typeof canvasSizeOrCalculateScanRegion==='function'\n            ? canvasSizeOrCalculateScanRegion\n            : this._calculateScanRegion);\n        this._preferredCamera = options.preferredCamera || preferredCamera || this._preferredCamera;\n        this._legacyCanvasSize = typeof canvasSizeOrOnDecodeErrorOrOptions === 'number'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : typeof canvasSizeOrCalculateScanRegion === 'number'\n                ? canvasSizeOrCalculateScanRegion\n                : this._legacyCanvasSize;\n        this._maxScansPerSecond = options.maxScansPerSecond || this._maxScansPerSecond;\n\n        this._onPlay = this._onPlay.bind(this);\n        this._onLoadedMetaData = this._onLoadedMetaData.bind(this);\n        this._onVisibilityChange = this._onVisibilityChange.bind(this);\n        this._updateOverlay = this._updateOverlay.bind(this);\n\n        // @ts-ignore\n        video.disablePictureInPicture = true;\n        // Allow inline playback on iPhone instead of requiring full screen playback,\n        // see https://webkit.org/blog/6784/new-video-policies-for-ios/\n        // @ts-ignore\n        video.playsInline = true;\n        // Allow play() on iPhone without requiring a user gesture. Should not really be needed as camera stream\n        // includes no audio, but just to be safe.\n        video.muted = true;\n\n        // Avoid Safari stopping the video stream on a hidden video.\n        // See https://github.com/cozmo/jsQR/issues/185\n        let shouldHideVideo = false;\n        if (video.hidden) {\n            video.hidden = false;\n            shouldHideVideo = true;\n        }\n        if (!document.body.contains(video)) {\n            document.body.appendChild(video);\n            shouldHideVideo = true;\n        }\n        const videoContainer = video.parentElement!;\n\n        if (options.highlightScanRegion || options.highlightCodeOutline) {\n            const gotExternalOverlay = !!options.overlay;\n            this.$overlay = options.overlay || document.createElement('div');\n            const overlayStyle = this.$overlay.style;\n            overlayStyle.position = 'absolute';\n            overlayStyle.display = 'none';\n            overlayStyle.pointerEvents = 'none';\n            this.$overlay.classList.add('scan-region-highlight');\n            if (!gotExternalOverlay && options.highlightScanRegion) {\n                // default style; can be overwritten via css, e.g. by changing the svg's stroke color, hiding the\n                // .scan-region-highlight-svg, setting a border, outline, background, etc.\n                this.$overlay.innerHTML = '<svg class=\"scan-region-highlight-svg\" viewBox=\"0 0 238 238\" '\n                    + 'preserveAspectRatio=\"none\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;'\n                    + 'fill:none;stroke:#e9b213;stroke-width:4;stroke-linecap:round;stroke-linejoin:round\">'\n                    + '<path d=\"M31 2H10a8 8 0 0 0-8 8v21M207 2h21a8 8 0 0 1 8 8v21m0 176v21a8 8 0 0 1-8 8h-21m-176 '\n                    + '0H10a8 8 0 0 1-8-8v-21\"/></svg>';\n                try {\n                    this.$overlay.firstElementChild!.animate({ transform: ['scale(.98)', 'scale(1.01)'] }, {\n                        duration: 400,\n                        iterations: Infinity,\n                        direction: 'alternate',\n                        easing: 'ease-in-out',\n                    });\n                } catch (e) {}\n                videoContainer.insertBefore(this.$overlay, this.$video.nextSibling);\n            }\n            if (options.highlightCodeOutline) {\n                // default style; can be overwritten via css\n                this.$overlay.insertAdjacentHTML(\n                    'beforeend',\n                    '<svg class=\"code-outline-highlight\" preserveAspectRatio=\"none\" style=\"display:none;width:100%;'\n                        + 'height:100%;fill:none;stroke:#e9b213;stroke-width:5;stroke-dasharray:25;'\n                        + 'stroke-linecap:round;stroke-linejoin:round\"><polygon/></svg>',\n                );\n                this.$codeOutlineHighlight = this.$overlay.lastElementChild as SVGSVGElement;\n            }\n        }\n        this._scanRegion = this._calculateScanRegion(video);\n\n        requestAnimationFrame(() => {\n            // Checking in requestAnimationFrame which should avoid a potential additional re-flow for getComputedStyle.\n            const videoStyle = window.getComputedStyle(video);\n            if (videoStyle.display === 'none') {\n                video.style.setProperty('display', 'block', 'important');\n                shouldHideVideo = true;\n            }\n            if (videoStyle.visibility !== 'visible') {\n                video.style.setProperty('visibility', 'visible', 'important');\n                shouldHideVideo = true;\n            }\n            if (shouldHideVideo) {\n                // Hide the video in a way that doesn't cause Safari to stop the playback.\n                console.warn('QrScanner has overwritten the video hiding style to avoid Safari stopping the playback.');\n                video.style.opacity = '0';\n                video.style.width = '0';\n                video.style.height = '0';\n                if (this.$overlay && this.$overlay.parentElement) {\n                    this.$overlay.parentElement.removeChild(this.$overlay);\n                }\n                // @ts-ignore\n                delete this.$overlay!;\n                // @ts-ignore\n                delete this.$codeOutlineHighlight!;\n            }\n\n            if (this.$overlay) {\n                this._updateOverlay();\n            }\n        });\n\n        video.addEventListener('play', this._onPlay);\n        video.addEventListener('loadedmetadata', this._onLoadedMetaData);\n        document.addEventListener('visibilitychange', this._onVisibilityChange);\n        window.addEventListener('resize', this._updateOverlay);\n\n        this._qrEnginePromise = QrScanner.createQrEngine();\n    }\n\n    async hasFlash(): Promise<boolean> {\n        let stream: MediaStream | undefined;\n        try {\n            if (this.$video.srcObject) {\n                if (!(this.$video.srcObject instanceof MediaStream)) return false; // srcObject is not a camera stream\n                stream = this.$video.srcObject;\n            } else {\n                stream = (await this._getCameraStream()).stream;\n            }\n            return 'torch' in stream.getVideoTracks()[0].getSettings();\n        } catch (e) {\n            return false;\n        } finally {\n            // close the stream we just opened for detecting whether it supports flash\n            if (stream && stream !== this.$video.srcObject) {\n                console.warn('Call hasFlash after successfully starting the scanner to avoid creating '\n                    + 'a temporary video stream');\n                QrScanner._stopVideoStream(stream);\n            }\n        }\n    }\n\n    isFlashOn(): boolean {\n        return this._flashOn;\n    }\n\n    async toggleFlash(): Promise<void> {\n        if (this._flashOn) {\n            await this.turnFlashOff();\n        } else {\n            await this.turnFlashOn();\n        }\n    }\n\n    async turnFlashOn(): Promise<void> {\n        if (this._flashOn || this._destroyed) return;\n        this._flashOn = true;\n        if (!this._active || this._paused) return; // flash will be turned on later on .start()\n        try {\n            if (!await this.hasFlash()) throw 'No flash available';\n            // Note that the video track is guaranteed to exist and to be a MediaStream due to the check in hasFlash\n            await (this.$video.srcObject as MediaStream).getVideoTracks()[0].applyConstraints({\n                // @ts-ignore: constraint 'torch' is unknown to ts\n                advanced: [{ torch: true }],\n            });\n        } catch (e) {\n            this._flashOn = false;\n            throw e;\n        }\n    }\n\n    async turnFlashOff(): Promise<void> {\n        if (!this._flashOn) return;\n        // applyConstraints with torch: false does not work to turn the flashlight off, as a stream's torch stays\n        // continuously on, see https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints#torch. Therefore,\n        // we have to stop the stream to turn the flashlight off.\n        this._flashOn = false;\n        await this._restartVideoStream();\n    }\n\n    destroy(): void {\n        this.$video.removeEventListener('loadedmetadata', this._onLoadedMetaData);\n        this.$video.removeEventListener('play', this._onPlay);\n        document.removeEventListener('visibilitychange', this._onVisibilityChange);\n        window.removeEventListener('resize', this._updateOverlay);\n\n        this._destroyed = true;\n        this._flashOn = false;\n        this.stop(); // sets this._paused = true and this._active = false\n        QrScanner._postWorkerMessage(this._qrEnginePromise, 'close');\n    }\n\n    async start(): Promise<void> {\n        if (this._destroyed) throw new Error('The QR scanner can not be started as it had been destroyed.');\n        if (this._active && !this._paused) return;\n\n        if (window.location.protocol !== 'https:') {\n            // warn but try starting the camera anyways\n            console.warn('The camera stream is only accessible if the page is transferred via https.');\n        }\n\n        this._active = true;\n        if (document.hidden) return; // camera will be started as soon as tab is in foreground\n        this._paused = false;\n        if (this.$video.srcObject) {\n            // camera stream already/still set\n            await this.$video.play();\n            return;\n        }\n\n        try {\n            const { stream, facingMode } = await this._getCameraStream();\n            if (!this._active || this._paused) {\n                // was stopped in the meantime\n                QrScanner._stopVideoStream(stream);\n                return;\n            }\n            this._setVideoMirror(facingMode);\n            this.$video.srcObject = stream;\n            await this.$video.play();\n\n            // Restart the flash if it was previously on\n            if (this._flashOn) {\n                this._flashOn = false; // force turnFlashOn to restart the flash\n                this.turnFlashOn().catch(() => {});\n            }\n        } catch (e) {\n            if (this._paused) return;\n            this._active = false;\n            throw e;\n        }\n    }\n\n    stop(): void {\n        this.pause();\n        this._active = false;\n    }\n\n    async pause(stopStreamImmediately = false): Promise<boolean> {\n        this._paused = true;\n        if (!this._active) return true;\n        this.$video.pause();\n\n        if (this.$overlay) {\n            this.$overlay.style.display = 'none';\n        }\n\n        const stopStream = () => {\n            if (this.$video.srcObject instanceof MediaStream) {\n                // revoke srcObject only if it's a stream which was likely set by us\n                QrScanner._stopVideoStream(this.$video.srcObject);\n                this.$video.srcObject = null;\n            }\n        };\n\n        if (stopStreamImmediately) {\n            stopStream();\n            return true;\n        }\n\n        await new Promise((resolve) => setTimeout(resolve, 300));\n        if (!this._paused) return false;\n        stopStream();\n        return true;\n    }\n\n    async setCamera(facingModeOrDeviceId: QrScanner.FacingMode | QrScanner.DeviceId): Promise<void> {\n        if (facingModeOrDeviceId === this._preferredCamera) return;\n        this._preferredCamera = facingModeOrDeviceId;\n        // Restart the scanner with the new camera which will also update the video mirror and the scan region.\n        await this._restartVideoStream();\n    }\n\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        options: {\n            scanRegion?: QrScanner.ScanRegion | null,\n            qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n            canvas?: HTMLCanvasElement | null,\n            disallowCanvasResizing?: boolean,\n            alsoTryWithoutScanRegion?: boolean,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n    ): Promise<QrScanner.ScanResult>;\n    /** @deprecated */\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        scanRegion?: QrScanner.ScanRegion | null,\n        qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing?: boolean,\n        alsoTryWithoutScanRegion?: boolean,\n    ): Promise<string>;\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        scanRegionOrOptions?: QrScanner.ScanRegion | {\n            scanRegion?: QrScanner.ScanRegion | null,\n            qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n            canvas?: HTMLCanvasElement | null,\n            disallowCanvasResizing?: boolean,\n            alsoTryWithoutScanRegion?: boolean,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        } | null,\n        qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing: boolean = false,\n        alsoTryWithoutScanRegion: boolean = false,\n    ): Promise<string | QrScanner.ScanResult> {\n        let scanRegion: QrScanner.ScanRegion | null | undefined;\n        let returnDetailedScanResult = false;\n        if (scanRegionOrOptions && (\n            'scanRegion' in scanRegionOrOptions\n            || 'qrEngine' in scanRegionOrOptions\n            || 'canvas' in scanRegionOrOptions\n            || 'disallowCanvasResizing' in scanRegionOrOptions\n            || 'alsoTryWithoutScanRegion' in scanRegionOrOptions\n            || 'returnDetailedScanResult' in scanRegionOrOptions\n        )) {\n            // we got an options object using the new api\n            scanRegion = scanRegionOrOptions.scanRegion;\n            qrEngine = scanRegionOrOptions.qrEngine;\n            canvas = scanRegionOrOptions.canvas;\n            disallowCanvasResizing = scanRegionOrOptions.disallowCanvasResizing || false;\n            alsoTryWithoutScanRegion = scanRegionOrOptions.alsoTryWithoutScanRegion || false;\n            returnDetailedScanResult = true;\n        } else if (scanRegionOrOptions || qrEngine || canvas || disallowCanvasResizing || alsoTryWithoutScanRegion) {\n            console.warn('You\\'re using a deprecated api for scanImage which will be removed in the future.');\n        } else {\n            // Only imageOrFileOrBlobOrUrl was specified and we can't distinguish between new or old api usage. For\n            // backwards compatibility we have to assume the old api for now. The options object is marked as non-\n            // optional in the parameter list above to make clear that ScanResult instead of string is only returned if\n            // an options object was provided. However, in the future once legacy support is removed, the options object\n            // should become optional.\n            console.warn('Note that the return type of scanImage will change in the future. To already switch to the '\n                + 'new api today, you can pass returnDetailedScanResult: true.');\n        }\n\n        const gotExternalEngine = !!qrEngine;\n\n        try {\n            let image: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n                | SVGImageElement;\n            let canvasContext: CanvasRenderingContext2D;\n            [qrEngine, image] = await Promise.all([\n                qrEngine || QrScanner.createQrEngine(),\n                QrScanner._loadImage(imageOrFileOrBlobOrUrl),\n            ]);\n            [canvas, canvasContext] = QrScanner._drawToCanvas(image, scanRegion, canvas, disallowCanvasResizing);\n            let detailedScanResult: QrScanner.ScanResult;\n\n            if (qrEngine instanceof Worker) {\n                const qrEngineWorker = qrEngine; // for ts to know that it's still a worker later in the event listeners\n                if (!gotExternalEngine) {\n                    // Enable scanning of inverted color qr codes.\n                    QrScanner._postWorkerMessageSync(qrEngineWorker, 'inversionMode', 'both');\n                }\n                detailedScanResult = await new Promise((resolve, reject) => {\n                    let timeout: number;\n                    let onMessage: (event: MessageEvent) => void;\n                    let onError: (error: ErrorEvent | string) => void;\n                    let expectedResponseId = -1;\n                    onMessage = (event: MessageEvent) => {\n                        if (event.data.id !== expectedResponseId) {\n                            return;\n                        }\n                        qrEngineWorker.removeEventListener('message', onMessage);\n                        qrEngineWorker.removeEventListener('error', onError);\n                        clearTimeout(timeout);\n                        if (event.data.data !== null) {\n                            resolve({\n                                data: event.data.data,\n                                cornerPoints: QrScanner._convertPoints(event.data.cornerPoints, scanRegion),\n                                bytes: event.data.bytes\n                            });\n                        } else {\n                            reject(QrScanner.NO_QR_CODE_FOUND);\n                        }\n                    };\n                    onError = (error: ErrorEvent | string) => {\n                        qrEngineWorker.removeEventListener('message', onMessage);\n                        qrEngineWorker.removeEventListener('error', onError);\n                        clearTimeout(timeout);\n                        const errorMessage = !error ? 'Unknown Error' : ((error as ErrorEvent).message || error);\n                        reject('Scanner error: ' + errorMessage);\n                    };\n                    qrEngineWorker.addEventListener('message', onMessage);\n                    qrEngineWorker.addEventListener('error', onError);\n                    timeout = setTimeout(() => onError('timeout'), 10000);\n                    const imageData = canvasContext.getImageData(0, 0, canvas!.width, canvas!.height);\n                    expectedResponseId = QrScanner._postWorkerMessageSync(\n                        qrEngineWorker,\n                        'decode',\n                        imageData,\n                        [imageData.data.buffer],\n                    );\n                });\n            } else {\n                detailedScanResult = await Promise.race([\n                    new Promise<QrScanner.ScanResult>((resolve, reject) => window.setTimeout(\n                        () => reject('Scanner error: timeout'),\n                        10000,\n                    )),\n                    (async (): Promise<QrScanner.ScanResult> => {\n                        try {\n                            const [scanResult] = await qrEngine.detect(canvas!);\n                            if (!scanResult) throw QrScanner.NO_QR_CODE_FOUND;\n                            return {\n                                data: scanResult.rawValue,\n                                cornerPoints: QrScanner._convertPoints(scanResult.cornerPoints, scanRegion),\n                                bytes: scanResult.rawValue.split('').map(c => c.charCodeAt(0)),\n                            };\n                        } catch (e) {\n                            const errorMessage = (e as Error).message || e as string;\n                            if (/not implemented|service unavailable/.test(errorMessage)) {\n                                // Not implemented can apparently for some reason happen even though getSupportedFormats\n                                // in createQrScanner reported that it's supported, see issue #98.\n                                // Service unavailable can happen after some time when the BarcodeDetector crashed and\n                                // can theoretically be recovered from by creating a new BarcodeDetector. However, in\n                                // newer browsers this issue does not seem to be present anymore and therefore we do not\n                                // apply this optimization anymore but just set _disableBarcodeDetector in both cases.\n                                // Also note that if we got an external qrEngine that crashed, we should possibly notify\n                                // the caller about it, but we also don't do this here, as it's such an unlikely case.\n                                QrScanner._disableBarcodeDetector = true;\n                                // retry without passing the broken BarcodeScanner instance\n                                return QrScanner.scanImage(imageOrFileOrBlobOrUrl, {\n                                    scanRegion,\n                                    canvas,\n                                    disallowCanvasResizing,\n                                    alsoTryWithoutScanRegion,\n                                });\n                            }\n                            throw `Scanner error: ${errorMessage}`;\n                        }\n                    })(),\n                ]);\n            }\n            return returnDetailedScanResult ? detailedScanResult : detailedScanResult.data;\n        } catch (e) {\n            if (!scanRegion || !alsoTryWithoutScanRegion) throw e;\n            const detailedScanResult = await QrScanner.scanImage(\n                imageOrFileOrBlobOrUrl,\n                { qrEngine, canvas, disallowCanvasResizing },\n            );\n            return returnDetailedScanResult ? detailedScanResult : detailedScanResult.data;\n        } finally {\n            if (!gotExternalEngine) {\n                QrScanner._postWorkerMessage(qrEngine!, 'close');\n            }\n        }\n    }\n\n    setGrayscaleWeights(red: number, green: number, blue: number, useIntegerApproximation: boolean = true): void {\n        // Note that for the native BarcodeDecoder or if the worker was destroyed, this is a no-op. However, the native\n        // implementations work also well with colored qr codes.\n        QrScanner._postWorkerMessage(\n            this._qrEnginePromise,\n            'grayscaleWeights',\n            { red, green, blue, useIntegerApproximation }\n        );\n    }\n\n    setInversionMode(inversionMode: QrScanner.InversionMode): void {\n        // Note that for the native BarcodeDecoder or if the worker was destroyed, this is a no-op. However, the native\n        // implementations scan normal and inverted qr codes by default\n        QrScanner._postWorkerMessage(this._qrEnginePromise, 'inversionMode', inversionMode);\n    }\n\n    static async createQrEngine(): Promise<Worker | BarcodeDetector>;\n    /** @deprecated */\n    static async createQrEngine(workerPath: string): Promise<Worker | BarcodeDetector>;\n    static async createQrEngine(workerPath?: string): Promise<Worker | BarcodeDetector> {\n        if (workerPath) {\n            console.warn('Specifying a worker path is not required and not supported anymore.');\n        }\n\n        // @ts-ignore no types defined for import\n        const createWorker = () => (import('./qr-scanner-worker.min.js') as Promise<{ createWorker: () => Worker }>)\n            .then((module) => module.createWorker());\n\n        const useBarcodeDetector = !QrScanner._disableBarcodeDetector\n            && 'BarcodeDetector' in window\n            && BarcodeDetector.getSupportedFormats\n            && (await BarcodeDetector.getSupportedFormats()).includes('qr_code');\n\n        if (!useBarcodeDetector) return createWorker();\n\n        // On Macs with an M1/M2 processor and macOS Ventura (macOS version 13), the BarcodeDetector is broken in\n        // Chromium based browsers, regardless of the version. For that constellation, the BarcodeDetector does not\n        // error but does not detect QR codes. Macs without an M1/M2 or before Ventura are fine.\n        // See issue #209 and https://bugs.chromium.org/p/chromium/issues/detail?id=1382442\n        // TODO update this once the issue in macOS is fixed\n        const userAgentData = navigator.userAgentData;\n        const isChromiumOnMacWithArmVentura = userAgentData // all Chromium browsers support userAgentData\n            && userAgentData.brands.some(({ brand }) => /Chromium/i.test(brand))\n            && /mac ?OS/i.test(userAgentData.platform)\n            // Does it have an ARM chip (e.g. M1/M2) and Ventura? Check this last as getHighEntropyValues can\n            // theoretically trigger a browser prompt, although no browser currently does seem to show one.\n            // If browser or user refused to return the requested values, assume broken ARM Ventura, to be safe.\n            && await userAgentData.getHighEntropyValues(['architecture', 'platformVersion'])\n                .then(({ architecture, platformVersion }) =>\n                    /arm/i.test(architecture || 'arm') && parseInt(platformVersion || '13') >= /* Ventura */ 13)\n                .catch(() => true);\n        if (isChromiumOnMacWithArmVentura) return createWorker();\n\n        return new BarcodeDetector({ formats: ['qr_code'] });\n    }\n\n    private _onPlay(): void {\n        this._scanRegion = this._calculateScanRegion(this.$video);\n        this._updateOverlay();\n        if (this.$overlay) {\n            this.$overlay.style.display = '';\n        }\n        this._scanFrame();\n    }\n\n    private _onLoadedMetaData(): void {\n        this._scanRegion = this._calculateScanRegion(this.$video);\n        this._updateOverlay();\n    }\n\n    private _onVisibilityChange(): void {\n        if (document.hidden) {\n            this.pause();\n        } else if (this._active) {\n            this.start();\n        }\n    }\n\n    private _calculateScanRegion(video: HTMLVideoElement): QrScanner.ScanRegion {\n        // Default scan region calculation. Note that this can be overwritten in the constructor.\n        const smallestDimension = Math.min(video.videoWidth, video.videoHeight);\n        const scanRegionSize = Math.round(2 / 3 * smallestDimension);\n        return {\n            x: Math.round((video.videoWidth - scanRegionSize) / 2),\n            y: Math.round((video.videoHeight - scanRegionSize) / 2),\n            width: scanRegionSize,\n            height: scanRegionSize,\n            downScaledWidth: this._legacyCanvasSize,\n            downScaledHeight: this._legacyCanvasSize,\n        };\n    }\n\n    private _updateOverlay(): void {\n        requestAnimationFrame(() => {\n            // Running in requestAnimationFrame which should avoid a potential additional re-flow for getComputedStyle\n            // and offsetWidth, offsetHeight, offsetLeft, offsetTop.\n            if (!this.$overlay) return;\n            const video = this.$video;\n            const videoWidth = video.videoWidth;\n            const videoHeight = video.videoHeight;\n            const elementWidth = video.offsetWidth;\n            const elementHeight = video.offsetHeight;\n            const elementX = video.offsetLeft;\n            const elementY = video.offsetTop;\n\n            const videoStyle = window.getComputedStyle(video);\n            const videoObjectFit = videoStyle.objectFit;\n            const videoAspectRatio = videoWidth / videoHeight;\n            const elementAspectRatio = elementWidth / elementHeight;\n            let videoScaledWidth: number;\n            let videoScaledHeight: number;\n            switch (videoObjectFit) {\n                case 'none':\n                    videoScaledWidth = videoWidth;\n                    videoScaledHeight = videoHeight;\n                    break;\n                case 'fill':\n                    videoScaledWidth = elementWidth;\n                    videoScaledHeight = elementHeight;\n                    break;\n                default: // 'cover', 'contains', 'scale-down'\n                    if (videoObjectFit === 'cover'\n                        ? videoAspectRatio > elementAspectRatio\n                        : videoAspectRatio < elementAspectRatio) {\n                        // The scaled height is the element height\n                        // - for 'cover' if the video aspect ratio is wider than the element aspect ratio\n                        //   (scaled height matches element height and scaled width overflows element width)\n                        // - for 'contains'/'scale-down' if element aspect ratio is wider than the video aspect ratio\n                        //   (scaled height matched element height and element width overflows scaled width)\n                        videoScaledHeight = elementHeight;\n                        videoScaledWidth = videoScaledHeight * videoAspectRatio;\n                    } else {\n                        videoScaledWidth = elementWidth;\n                        videoScaledHeight = videoScaledWidth / videoAspectRatio;\n                    }\n                    if (videoObjectFit === 'scale-down') {\n                        // for 'scale-down' the dimensions are the minimum of 'contains' and 'none'\n                        videoScaledWidth = Math.min(videoScaledWidth, videoWidth);\n                        videoScaledHeight = Math.min(videoScaledHeight, videoHeight);\n                    }\n            }\n\n            // getComputedStyle is so nice to convert keywords (left, center, right, top, bottom) to percent and makes\n            // sure to set the default of 50% if only one or no component was provided, therefore we can be sure that\n            // both components are set. Additionally, it converts units other than px (e.g. rem) to px.\n            const [videoX, videoY] = videoStyle.objectPosition.split(' ').map((length, i) => {\n                const lengthValue = parseFloat(length);\n                return length.endsWith('%')\n                    ? (!i ? elementWidth - videoScaledWidth : elementHeight - videoScaledHeight) * lengthValue / 100\n                    : lengthValue;\n            });\n\n            const regionWidth = this._scanRegion.width || videoWidth;\n            const regionHeight = this._scanRegion.height || videoHeight;\n            const regionX = this._scanRegion.x || 0;\n            const regionY = this._scanRegion.y || 0;\n\n            const overlayStyle = this.$overlay.style;\n            overlayStyle.width = `${regionWidth / videoWidth * videoScaledWidth}px`;\n            overlayStyle.height = `${regionHeight / videoHeight * videoScaledHeight}px`;\n            overlayStyle.top = `${elementY + videoY + regionY / videoHeight * videoScaledHeight}px`;\n            const isVideoMirrored = /scaleX\\(-1\\)/.test(video.style.transform!);\n            overlayStyle.left = `${elementX\n                + (isVideoMirrored ? elementWidth - videoX - videoScaledWidth : videoX)\n                + (isVideoMirrored ? videoWidth - regionX - regionWidth : regionX) / videoWidth * videoScaledWidth}px`;\n            // apply same mirror as on video\n            overlayStyle.transform = video.style.transform;\n        });\n    }\n\n    private static _convertPoints(\n        points: QrScanner.Point[],\n        scanRegion?: QrScanner.ScanRegion | null,\n    ): QrScanner.Point[] {\n        if (!scanRegion) return points;\n        const offsetX = scanRegion.x || 0;\n        const offsetY = scanRegion.y || 0;\n        const scaleFactorX = scanRegion.width && scanRegion.downScaledWidth\n            ? scanRegion.width / scanRegion.downScaledWidth\n            : 1;\n        const scaleFactorY = scanRegion.height && scanRegion.downScaledHeight\n            ? scanRegion.height / scanRegion.downScaledHeight\n            : 1;\n        for (const point of points) {\n            point.x = point.x * scaleFactorX + offsetX;\n            point.y = point.y * scaleFactorY + offsetY;\n        }\n        return points;\n    }\n\n    private _scanFrame(): void {\n        if (!this._active || this.$video.paused || this.$video.ended) return;\n        // If requestVideoFrameCallback is available use that to avoid unnecessary scans on the same frame as the\n        // camera's framerate can be lower than the screen refresh rate and this._maxScansPerSecond, especially in dark\n        // settings where the exposure time is longer. Both, requestVideoFrameCallback and requestAnimationFrame are not\n        // being fired if the tab is in the background, which is what we want.\n        const requestFrame = 'requestVideoFrameCallback' in this.$video\n            // @ts-ignore\n            ? this.$video.requestVideoFrameCallback.bind(this.$video)\n            : requestAnimationFrame;\n        requestFrame(async () => {\n            if (this.$video.readyState <= 1) {\n                // Skip scans until the video is ready as drawImage() only works correctly on a video with readyState\n                // > 1, see https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage#Notes.\n                // This also avoids false positives for videos paused after a successful scan which remains visible on\n                // the canvas until the video is started again and ready.\n                this._scanFrame();\n                return;\n            }\n\n            const timeSinceLastScan = Date.now() - this._lastScanTimestamp;\n            const minimumTimeBetweenScans = 1000 / this._maxScansPerSecond;\n            if (timeSinceLastScan < minimumTimeBetweenScans) {\n                await new Promise((resolve) => setTimeout(resolve, minimumTimeBetweenScans - timeSinceLastScan));\n            }\n            // console.log('Scan rate:', Math.round(1000 / (Date.now() - this._lastScanTimestamp)));\n            this._lastScanTimestamp = Date.now();\n\n            let result: QrScanner.ScanResult | undefined;\n            try {\n                result = await QrScanner.scanImage(this.$video, {\n                    scanRegion: this._scanRegion,\n                    qrEngine: this._qrEnginePromise,\n                    canvas: this.$canvas,\n                });\n            } catch (error) {\n                if (!this._active) return;\n                this._onDecodeError(error as Error | string);\n            }\n\n            if (QrScanner._disableBarcodeDetector && !(await this._qrEnginePromise instanceof Worker)) {\n                // replace the disabled BarcodeDetector\n                this._qrEnginePromise = QrScanner.createQrEngine();\n            }\n\n            if (result) {\n                if (this._onDecode) {\n                    this._onDecode(result);\n                } else if (this._legacyOnDecode) {\n                    this._legacyOnDecode(result.data);\n                }\n\n                if (this.$codeOutlineHighlight) {\n                    clearTimeout(this._codeOutlineHighlightRemovalTimeout);\n                    this._codeOutlineHighlightRemovalTimeout = undefined;\n                    this.$codeOutlineHighlight.setAttribute(\n                        'viewBox',\n                        `${this._scanRegion.x || 0} `\n                            + `${this._scanRegion.y || 0} `\n                            + `${this._scanRegion.width || this.$video.videoWidth} `\n                            + `${this._scanRegion.height || this.$video.videoHeight}`,\n                    );\n                    const polygon = this.$codeOutlineHighlight.firstElementChild!;\n                    polygon.setAttribute('points', result.cornerPoints.map(({x, y}) => `${x},${y}`).join(' '));\n                    this.$codeOutlineHighlight.style.display = '';\n                }\n            } else if (this.$codeOutlineHighlight && !this._codeOutlineHighlightRemovalTimeout) {\n                // hide after timeout to make it flash less when on some frames the QR code is detected and on some not\n                this._codeOutlineHighlightRemovalTimeout = setTimeout(\n                    () => this.$codeOutlineHighlight!.style.display = 'none',\n                    100,\n                );\n            }\n\n            this._scanFrame();\n        });\n    }\n\n    private _onDecodeError(error: Error | string): void {\n        // default error handler; can be overwritten in the constructor\n        if (error === QrScanner.NO_QR_CODE_FOUND) return;\n        console.log(error);\n    }\n\n    private async _getCameraStream(): Promise<{ stream: MediaStream, facingMode: QrScanner.FacingMode }> {\n        if (!navigator.mediaDevices) throw 'Camera not found.';\n\n        const preferenceType = /^(environment|user)$/.test(this._preferredCamera)\n            ? 'facingMode'\n            : 'deviceId';\n        const constraintsWithoutCamera: Array<MediaTrackConstraints> = [{\n            width: { min: 1024 }\n        }, {\n            width: { min: 768 }\n        }, {}];\n        const constraintsWithCamera = constraintsWithoutCamera.map((constraint) => Object.assign({}, constraint, {\n            [preferenceType]: { exact: this._preferredCamera },\n        }));\n\n        for (const constraints of [...constraintsWithCamera, ...constraintsWithoutCamera]) {\n            try {\n                const stream = await navigator.mediaDevices.getUserMedia({ video: constraints, audio: false });\n                // Try to determine the facing mode from the stream, otherwise use a guess or 'environment' as\n                // default. Note that the guess is not always accurate as Safari returns cameras of different facing\n                // mode, even for exact facingMode constraints.\n                const facingMode = this._getFacingMode(stream)\n                    || (constraints.facingMode\n                        ? this._preferredCamera as QrScanner.FacingMode // a facing mode we were able to fulfill\n                        : (this._preferredCamera === 'environment'\n                            ? 'user' // switch as _preferredCamera was environment but we are not able to fulfill it\n                            : 'environment' // switch from unfulfilled user facingMode or default to environment\n                        )\n                    );\n                return { stream, facingMode };\n            } catch (e) {}\n        }\n\n        throw 'Camera not found.';\n    }\n\n    private async _restartVideoStream(): Promise<void> {\n        // Note that we always pause the stream and not only if !this._paused as even if this._paused === true, the\n        // stream might still be running, as it's by default only stopped after a delay of 300ms.\n        const wasPaused = this._paused;\n        const paused = await this.pause(true);\n        if (!paused || wasPaused || !this._active) return;\n        await this.start();\n    }\n\n    private static _stopVideoStream(stream : MediaStream): void {\n        for (const track of stream.getTracks()) {\n            track.stop(); //  note that this will also automatically turn the flashlight off\n            stream.removeTrack(track);\n        }\n    }\n\n    private _setVideoMirror(facingMode: QrScanner.FacingMode): void {\n        // in user facing mode mirror the video to make it easier for the user to position the QR code\n        const scaleFactor = facingMode === 'user'? -1 : 1;\n        this.$video.style.transform = 'scaleX(' + scaleFactor + ')';\n    }\n\n    private _getFacingMode(videoStream: MediaStream): QrScanner.FacingMode | null {\n        const videoTrack = videoStream.getVideoTracks()[0];\n        if (!videoTrack) return null; // unknown\n        // inspired by https://github.com/JodusNodus/react-qr-reader/blob/master/src/getDeviceId.js#L13\n        return /rear|back|environment/i.test(videoTrack.label)\n            ? 'environment'\n            : /front|user|face/i.test(videoTrack.label)\n                ? 'user'\n                : null; // unknown\n    }\n\n    private static _drawToCanvas(\n        image: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement,\n        scanRegion?: QrScanner.ScanRegion | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing= false,\n    ): [HTMLCanvasElement, CanvasRenderingContext2D] {\n        canvas = canvas || document.createElement('canvas');\n        const scanRegionX = scanRegion && scanRegion.x ? scanRegion.x : 0;\n        const scanRegionY = scanRegion && scanRegion.y ? scanRegion.y : 0;\n        const scanRegionWidth = scanRegion && scanRegion.width\n            ? scanRegion.width\n            : (image as HTMLVideoElement).videoWidth || image.width as number;\n        const scanRegionHeight = scanRegion && scanRegion.height\n            ? scanRegion.height\n            : (image as HTMLVideoElement).videoHeight || image.height as number;\n\n        if (!disallowCanvasResizing) {\n            const canvasWidth = scanRegion && scanRegion.downScaledWidth\n                ? scanRegion.downScaledWidth\n                : scanRegionWidth;\n            const canvasHeight = scanRegion && scanRegion.downScaledHeight\n                ? scanRegion.downScaledHeight\n                : scanRegionHeight;\n            // Setting the canvas width or height clears the canvas, even if the values didn't change, therefore only\n            // set them if they actually changed.\n            if (canvas.width !== canvasWidth) {\n                canvas.width = canvasWidth;\n            }\n            if (canvas.height !== canvasHeight) {\n                canvas.height = canvasHeight;\n            }\n        }\n\n        const context = canvas.getContext('2d', { alpha: false })!;\n        context.imageSmoothingEnabled = false; // gives less blurry images\n        context.drawImage(\n            image,\n            scanRegionX, scanRegionY, scanRegionWidth, scanRegionHeight,\n            0, 0, canvas.width, canvas.height,\n        );\n        return [canvas, context];\n    }\n\n    private static async _loadImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n    ): Promise<HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n        | SVGImageElement > {\n        if (imageOrFileOrBlobOrUrl instanceof Image) {\n            await QrScanner._awaitImageLoad(imageOrFileOrBlobOrUrl);\n            return imageOrFileOrBlobOrUrl;\n        } else if (imageOrFileOrBlobOrUrl instanceof HTMLVideoElement\n            || imageOrFileOrBlobOrUrl instanceof HTMLCanvasElement\n            || imageOrFileOrBlobOrUrl instanceof SVGImageElement\n            || 'OffscreenCanvas' in window && imageOrFileOrBlobOrUrl instanceof OffscreenCanvas\n            || 'ImageBitmap' in window && imageOrFileOrBlobOrUrl instanceof ImageBitmap) {\n            return imageOrFileOrBlobOrUrl;\n        } else if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob\n            || imageOrFileOrBlobOrUrl instanceof URL || typeof imageOrFileOrBlobOrUrl === 'string') {\n            const image = new Image();\n            if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {\n                image.src = URL.createObjectURL(imageOrFileOrBlobOrUrl);\n            } else {\n                image.src = imageOrFileOrBlobOrUrl.toString();\n            }\n            try {\n                await QrScanner._awaitImageLoad(image);\n                return image;\n            } finally {\n                if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {\n                    URL.revokeObjectURL(image.src);\n                }\n            }\n        } else {\n            throw 'Unsupported image type.';\n        }\n    }\n\n    private static async _awaitImageLoad(image: HTMLImageElement): Promise<void> {\n        if (image.complete && image.naturalWidth !== 0) return; // already loaded\n        await new Promise<void>((resolve, reject) => {\n            const listener = (event: ErrorEvent | Event) => {\n                image.removeEventListener('load', listener);\n                image.removeEventListener('error', listener);\n                if (event instanceof ErrorEvent) {\n                    reject('Image load error');\n                } else {\n                    resolve();\n                }\n            };\n            image.addEventListener('load', listener);\n            image.addEventListener('error', listener);\n        });\n    }\n\n    private static async _postWorkerMessage(\n        qrEngineOrQrEnginePromise: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector>,\n        type: string,\n        data?: any,\n        transfer?: Transferable[],\n    ): Promise<number> {\n        return QrScanner._postWorkerMessageSync(await qrEngineOrQrEnginePromise, type, data, transfer);\n    }\n\n    // sync version of _postWorkerMessage without performance overhead of async functions\n    private static _postWorkerMessageSync(\n        qrEngine: Worker | BarcodeDetector,\n        type: string,\n        data?: any,\n        transfer?: Transferable[],\n    ): number {\n        if (!(qrEngine instanceof Worker)) return -1;\n        const id = QrScanner._workerMessageId++;\n        qrEngine.postMessage({\n            id,\n            type,\n            data,\n        }, transfer);\n        return id;\n    }\n}\n\ndeclare namespace QrScanner {\n    export interface ScanRegion {\n        x?: number;\n        y?: number;\n        width?: number;\n        height?: number;\n        downScaledWidth?: number;\n        downScaledHeight?: number;\n    }\n\n    export type FacingMode = 'environment' | 'user';\n    export type DeviceId = string;\n\n    export interface Camera {\n        id: DeviceId;\n        label: string;\n    }\n\n    export type InversionMode = 'original' | 'invert' | 'both';\n\n    export interface Point {\n        x: number;\n        y: number;\n    }\n\n    export interface ScanResult {\n        data: string;\n        // In clockwise order, starting at top left, but this might not be guaranteed in the future.\n        cornerPoints: QrScanner.Point[];\n        bytes: Number[];\n    }\n}\n\n// simplified from https://wicg.github.io/shape-detection-api/#barcode-detection-api\ndeclare class BarcodeDetector {\n    constructor(options?: { formats: string[] });\n    static getSupportedFormats(): Promise<string[]>;\n    detect(image: ImageBitmapSource): Promise<Array<{ rawValue: string, cornerPoints: QrScanner.Point[] }>>;\n}\n\n// simplified from https://github.com/lukewarlow/user-agent-data-types/blob/master/index.d.ts\ndeclare global {\n    interface Navigator {\n        readonly userAgentData?: {\n            readonly 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\ No newline at end of file
diff --git a/qr-scanner.umd.min.js b/qr-scanner.umd.min.js
deleted file mode 100644
index 1534612..0000000
--- a/qr-scanner.umd.min.js
+++ /dev/null
@@ -1,32 +0,0 @@
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-b.calculateScanRegion||("function"===typeof d?d:this._calculateScanRegion);this._preferredCamera=b.preferredCamera||f||this._preferredCamera;this._legacyCanvasSize="number"===typeof c?c:"number"===typeof d?d:this._legacyCanvasSize;this._maxScansPerSecond=b.maxScansPerSecond||this._maxScansPerSecond;this._onPlay=this._onPlay.bind(this);this._onLoadedMetaData=this._onLoadedMetaData.bind(this);this._onVisibilityChange=this._onVisibilityChange.bind(this);this._updateOverlay=this._updateOverlay.bind(this);
-a.disablePictureInPicture=!0;a.playsInline=!0;a.muted=!0;let h=!1;a.hidden&&(a.hidden=!1,h=!0);document.body.contains(a)||(document.body.appendChild(a),h=!0);c=a.parentElement;if(b.highlightScanRegion||b.highlightCodeOutline){d=!!b.overlay;this.$overlay=b.overlay||document.createElement("div");f=this.$overlay.style;f.position="absolute";f.display="none";f.pointerEvents="none";this.$overlay.classList.add("scan-region-highlight");if(!d&&b.highlightScanRegion){this.$overlay.innerHTML='<svg class="scan-region-highlight-svg" viewBox="0 0 238 238" preserveAspectRatio="none" style="position:absolute;width:100%;height:100%;left:0;top:0;fill:none;stroke:#e9b213;stroke-width:4;stroke-linecap:round;stroke-linejoin:round"><path d="M31 2H10a8 8 0 0 0-8 8v21M207 2h21a8 8 0 0 1 8 8v21m0 176v21a8 8 0 0 1-8 8h-21m-176 0H10a8 8 0 0 1-8-8v-21"/></svg>';
-try{this.$overlay.firstElementChild.animate({transform:["scale(.98)","scale(1.01)"]},{duration:400,iterations:Infinity,direction:"alternate",easing:"ease-in-out"})}catch(m){}c.insertBefore(this.$overlay,this.$video.nextSibling)}b.highlightCodeOutline&&(this.$overlay.insertAdjacentHTML("beforeend",'<svg class="code-outline-highlight" preserveAspectRatio="none" style="display:none;width:100%;height:100%;fill:none;stroke:#e9b213;stroke-width:5;stroke-dasharray:25;stroke-linecap:round;stroke-linejoin:round"><polygon/></svg>'),
-this.$codeOutlineHighlight=this.$overlay.lastElementChild)}this._scanRegion=this._calculateScanRegion(a);requestAnimationFrame(()=>{let m=window.getComputedStyle(a);"none"===m.display&&(a.style.setProperty("display","block","important"),h=!0);"visible"!==m.visibility&&(a.style.setProperty("visibility","visible","important"),h=!0);h&&(console.warn("QrScanner has overwritten the video hiding style to avoid Safari stopping the playback."),a.style.opacity="0",a.style.width="0",a.style.height="0",this.$overlay&&
-this.$overlay.parentElement&&this.$overlay.parentElement.removeChild(this.$overlay),delete this.$overlay,delete this.$codeOutlineHighlight);this.$overlay&&this._updateOverlay()});a.addEventListener("play",this._onPlay);a.addEventListener("loadedmetadata",this._onLoadedMetaData);document.addEventListener("visibilitychange",this._onVisibilityChange);window.addEventListener("resize",this._updateOverlay);this._qrEnginePromise=e.createQrEngine()}static set WORKER_PATH(a){console.warn("Setting QrScanner.WORKER_PATH is not required and not supported anymore. Have a look at the README for new setup instructions.")}static async hasCamera(){try{return!!(await e.listCameras(!1)).length}catch(a){return!1}}static async listCameras(a=
-!1){if(!navigator.mediaDevices)return[];let b=async()=>(await navigator.mediaDevices.enumerateDevices()).filter(d=>"videoinput"===d.kind),c;try{a&&(await b()).every(d=>!d.label)&&(c=await navigator.mediaDevices.getUserMedia({audio:!1,video:!0}))}catch(d){}try{return(await b()).map((d,f)=>({id:d.deviceId,label:d.label||(0===f?"Default Camera":`Camera ${f+1}`)}))}finally{c&&(console.warn("Call listCameras after successfully starting a QR scanner to avoid creating a temporary video stream"),e._stopVideoStream(c))}}async hasFlash(){let a;
-try{if(this.$video.srcObject){if(!(this.$video.srcObject instanceof MediaStream))return!1;a=this.$video.srcObject}else a=(await this._getCameraStream()).stream;return"torch"in a.getVideoTracks()[0].getSettings()}catch(b){return!1}finally{a&&a!==this.$video.srcObject&&(console.warn("Call hasFlash after successfully starting the scanner to avoid creating a temporary video stream"),e._stopVideoStream(a))}}isFlashOn(){return this._flashOn}async toggleFlash(){this._flashOn?await this.turnFlashOff():await this.turnFlashOn()}async turnFlashOn(){if(!this._flashOn&&
-!this._destroyed&&(this._flashOn=!0,this._active&&!this._paused))try{if(!await this.hasFlash())throw"No flash available";await this.$video.srcObject.getVideoTracks()[0].applyConstraints({advanced:[{torch:!0}]})}catch(a){throw this._flashOn=!1,a;}}async turnFlashOff(){this._flashOn&&(this._flashOn=!1,await this._restartVideoStream())}destroy(){this.$video.removeEventListener("loadedmetadata",this._onLoadedMetaData);this.$video.removeEventListener("play",this._onPlay);document.removeEventListener("visibilitychange",
-this._onVisibilityChange);window.removeEventListener("resize",this._updateOverlay);this._destroyed=!0;this._flashOn=!1;this.stop();e._postWorkerMessage(this._qrEnginePromise,"close")}async start(){if(this._destroyed)throw Error("The QR scanner can not be started as it had been destroyed.");if(!this._active||this._paused)if("https:"!==window.location.protocol&&console.warn("The camera stream is only accessible if the page is transferred via https."),this._active=!0,!document.hidden)if(this._paused=
-!1,this.$video.srcObject)await this.$video.play();else try{let {stream:a,facingMode:b}=await this._getCameraStream();!this._active||this._paused?e._stopVideoStream(a):(this._setVideoMirror(b),this.$video.srcObject=a,await this.$video.play(),this._flashOn&&(this._flashOn=!1,this.turnFlashOn().catch(()=>{})))}catch(a){if(!this._paused)throw this._active=!1,a;}}stop(){this.pause();this._active=!1}async pause(a=!1){this._paused=!0;if(!this._active)return!0;this.$video.pause();this.$overlay&&(this.$overlay.style.display=
-"none");let b=()=>{this.$video.srcObject instanceof MediaStream&&(e._stopVideoStream(this.$video.srcObject),this.$video.srcObject=null)};if(a)return b(),!0;await new Promise(c=>setTimeout(c,300));if(!this._paused)return!1;b();return!0}async setCamera(a){a!==this._preferredCamera&&(this._preferredCamera=a,await this._restartVideoStream())}static async scanImage(a,b,c,d,f=!1,h=!1){let m,n=!1;b&&("scanRegion"in b||"qrEngine"in b||"canvas"in b||"disallowCanvasResizing"in b||"alsoTryWithoutScanRegion"in
-b||"returnDetailedScanResult"in b)?(m=b.scanRegion,c=b.qrEngine,d=b.canvas,f=b.disallowCanvasResizing||!1,h=b.alsoTryWithoutScanRegion||!1,n=!0):b||c||d||f||h?console.warn("You're using a deprecated api for scanImage which will be removed in the future."):console.warn("Note that the return type of scanImage will change in the future. To already switch to the new api today, you can pass returnDetailedScanResult: true.");b=!!c;try{let p,l;[c,p]=await Promise.all([c||e.createQrEngine(),e._loadImage(a)]);
-[d,l]=e._drawToCanvas(p,m,d,f);let q;if(c instanceof Worker){let g=c;b||e._postWorkerMessageSync(g,"inversionMode","both");q=await new Promise((k,v)=>{let w,u,t,y=-1;u=r=>{r.data.id===y&&(g.removeEventListener("message",u),g.removeEventListener("error",t),clearTimeout(w),null!==r.data.data?k({data:r.data.data,cornerPoints:e._convertPoints(r.data.cornerPoints,m),bytes:r.data.bytes}):v(e.NO_QR_CODE_FOUND))};t=r=>{g.removeEventListener("message",u);g.removeEventListener("error",t);clearTimeout(w);v("Scanner error: "+
-(r?r.message||r:"Unknown Error"))};g.addEventListener("message",u);g.addEventListener("error",t);w=setTimeout(()=>t("timeout"),1E4);let x=l.getImageData(0,0,d.width,d.height);y=e._postWorkerMessageSync(g,"decode",x,[x.data.buffer])})}else q=await Promise.race([new Promise((g,k)=>window.setTimeout(()=>k("Scanner error: timeout"),1E4)),(async()=>{try{var [g]=await c.detect(d);if(!g)throw e.NO_QR_CODE_FOUND;return{data:g.rawValue,cornerPoints:e._convertPoints(g.cornerPoints,m),bytes:g.rawValue.split("").map(k=>
-k.charCodeAt(0))}}catch(k){g=k.message||k;if(/not implemented|service unavailable/.test(g))return e._disableBarcodeDetector=!0,e.scanImage(a,{scanRegion:m,canvas:d,disallowCanvasResizing:f,alsoTryWithoutScanRegion:h});throw`Scanner error: ${g}`;}})()]);return n?q:q.data}catch(p){if(!m||!h)throw p;let l=await e.scanImage(a,{qrEngine:c,canvas:d,disallowCanvasResizing:f});return n?l:l.data}finally{b||e._postWorkerMessage(c,"close")}}setGrayscaleWeights(a,b,c,d=!0){e._postWorkerMessage(this._qrEnginePromise,
-"grayscaleWeights",{red:a,green:b,blue:c,useIntegerApproximation:d})}setInversionMode(a){e._postWorkerMessage(this._qrEnginePromise,"inversionMode",a)}static async createQrEngine(a){a&&console.warn("Specifying a worker path is not required and not supported anymore.");a=()=>import("./qr-scanner-worker.min.js").then(c=>c.createWorker());if(!(!e._disableBarcodeDetector&&"BarcodeDetector"in window&&BarcodeDetector.getSupportedFormats&&(await BarcodeDetector.getSupportedFormats()).includes("qr_code")))return a();
-let b=navigator.userAgentData;return b&&b.brands.some(({brand:c})=>/Chromium/i.test(c))&&/mac ?OS/i.test(b.platform)&&await b.getHighEntropyValues(["architecture","platformVersion"]).then(({architecture:c,platformVersion:d})=>/arm/i.test(c||"arm")&&13<=parseInt(d||"13")).catch(()=>!0)?a():new BarcodeDetector({formats:["qr_code"]})}_onPlay(){this._scanRegion=this._calculateScanRegion(this.$video);this._updateOverlay();this.$overlay&&(this.$overlay.style.display="");this._scanFrame()}_onLoadedMetaData(){this._scanRegion=
-this._calculateScanRegion(this.$video);this._updateOverlay()}_onVisibilityChange(){document.hidden?this.pause():this._active&&this.start()}_calculateScanRegion(a){let b=Math.round(2/3*Math.min(a.videoWidth,a.videoHeight));return{x:Math.round((a.videoWidth-b)/2),y:Math.round((a.videoHeight-b)/2),width:b,height:b,downScaledWidth:this._legacyCanvasSize,downScaledHeight:this._legacyCanvasSize}}_updateOverlay(){requestAnimationFrame(()=>{if(this.$overlay){var a=this.$video,b=a.videoWidth,c=a.videoHeight,
-d=a.offsetWidth,f=a.offsetHeight,h=a.offsetLeft,m=a.offsetTop,n=window.getComputedStyle(a),p=n.objectFit,l=b/c,q=d/f;switch(p){case "none":var g=b;var k=c;break;case "fill":g=d;k=f;break;default:("cover"===p?l>q:l<q)?(k=f,g=k*l):(g=d,k=g/l),"scale-down"===p&&(g=Math.min(g,b),k=Math.min(k,c))}var [v,w]=n.objectPosition.split(" ").map((t,y)=>{const x=parseFloat(t);return t.endsWith("%")?(y?f-k:d-g)*x/100:x});n=this._scanRegion.width||b;q=this._scanRegion.height||c;p=this._scanRegion.x||0;var u=this._scanRegion.y||
-0;l=this.$overlay.style;l.width=`${n/b*g}px`;l.height=`${q/c*k}px`;l.top=`${m+w+u/c*k}px`;c=/scaleX\(-1\)/.test(a.style.transform);l.left=`${h+(c?d-v-g:v)+(c?b-p-n:p)/b*g}px`;l.transform=a.style.transform}})}static _convertPoints(a,b){if(!b)return a;let c=b.x||0,d=b.y||0,f=b.width&&b.downScaledWidth?b.width/b.downScaledWidth:1;b=b.height&&b.downScaledHeight?b.height/b.downScaledHeight:1;for(let h of a)h.x=h.x*f+c,h.y=h.y*b+d;return a}_scanFrame(){!this._active||this.$video.paused||this.$video.ended||
-("requestVideoFrameCallback"in this.$video?this.$video.requestVideoFrameCallback.bind(this.$video):requestAnimationFrame)(async()=>{if(!(1>=this.$video.readyState)){var a=Date.now()-this._lastScanTimestamp,b=1E3/this._maxScansPerSecond;a<b&&await new Promise(d=>setTimeout(d,b-a));this._lastScanTimestamp=Date.now();try{var c=await e.scanImage(this.$video,{scanRegion:this._scanRegion,qrEngine:this._qrEnginePromise,canvas:this.$canvas})}catch(d){if(!this._active)return;this._onDecodeError(d)}!e._disableBarcodeDetector||
-await this._qrEnginePromise instanceof Worker||(this._qrEnginePromise=e.createQrEngine());c?(this._onDecode?this._onDecode(c):this._legacyOnDecode&&this._legacyOnDecode(c.data),this.$codeOutlineHighlight&&(clearTimeout(this._codeOutlineHighlightRemovalTimeout),this._codeOutlineHighlightRemovalTimeout=void 0,this.$codeOutlineHighlight.setAttribute("viewBox",`${this._scanRegion.x||0} `+`${this._scanRegion.y||0} `+`${this._scanRegion.width||this.$video.videoWidth} `+`${this._scanRegion.height||this.$video.videoHeight}`),
-this.$codeOutlineHighlight.firstElementChild.setAttribute("points",c.cornerPoints.map(({x:d,y:f})=>`${d},${f}`).join(" ")),this.$codeOutlineHighlight.style.display="")):this.$codeOutlineHighlight&&!this._codeOutlineHighlightRemovalTimeout&&(this._codeOutlineHighlightRemovalTimeout=setTimeout(()=>this.$codeOutlineHighlight.style.display="none",100))}this._scanFrame()})}_onDecodeError(a){a!==e.NO_QR_CODE_FOUND&&console.log(a)}async _getCameraStream(){if(!navigator.mediaDevices)throw"Camera not found.";
-let a=/^(environment|user)$/.test(this._preferredCamera)?"facingMode":"deviceId",b=[{width:{min:1024}},{width:{min:768}},{}],c=b.map(d=>Object.assign({},d,{[a]:{exact:this._preferredCamera}}));for(let d of[...c,...b])try{let f=await navigator.mediaDevices.getUserMedia({video:d,audio:!1}),h=this._getFacingMode(f)||(d.facingMode?this._preferredCamera:"environment"===this._preferredCamera?"user":"environment");return{stream:f,facingMode:h}}catch(f){}throw"Camera not found.";}async _restartVideoStream(){let a=
-this._paused;await this.pause(!0)&&!a&&this._active&&await this.start()}static _stopVideoStream(a){for(let b of a.getTracks())b.stop(),a.removeTrack(b)}_setVideoMirror(a){this.$video.style.transform="scaleX("+("user"===a?-1:1)+")"}_getFacingMode(a){return(a=a.getVideoTracks()[0])?/rear|back|environment/i.test(a.label)?"environment":/front|user|face/i.test(a.label)?"user":null:null}static _drawToCanvas(a,b,c,d=!1){c=c||document.createElement("canvas");let f=b&&b.x?b.x:0,h=b&&b.y?b.y:0,m=b&&b.width?
-b.width:a.videoWidth||a.width,n=b&&b.height?b.height:a.videoHeight||a.height;d||(d=b&&b.downScaledWidth?b.downScaledWidth:m,b=b&&b.downScaledHeight?b.downScaledHeight:n,c.width!==d&&(c.width=d),c.height!==b&&(c.height=b));b=c.getContext("2d",{alpha:!1});b.imageSmoothingEnabled=!1;b.drawImage(a,f,h,m,n,0,0,c.width,c.height);return[c,b]}static async _loadImage(a){if(a instanceof Image)return await e._awaitImageLoad(a),a;if(a instanceof HTMLVideoElement||a instanceof HTMLCanvasElement||a instanceof SVGImageElement||
-"OffscreenCanvas"in window&&a instanceof OffscreenCanvas||"ImageBitmap"in window&&a instanceof ImageBitmap)return a;if(a instanceof File||a instanceof Blob||a instanceof URL||"string"===typeof a){let b=new Image;b.src=a instanceof File||a instanceof Blob?URL.createObjectURL(a):a.toString();try{return await e._awaitImageLoad(b),b}finally{(a instanceof File||a instanceof Blob)&&URL.revokeObjectURL(b.src)}}else throw"Unsupported image type.";}static async _awaitImageLoad(a){a.complete&&0!==a.naturalWidth||
-await new Promise((b,c)=>{let d=f=>{a.removeEventListener("load",d);a.removeEventListener("error",d);f instanceof ErrorEvent?c("Image load error"):b()};a.addEventListener("load",d);a.addEventListener("error",d)})}static async _postWorkerMessage(a,b,c,d){return e._postWorkerMessageSync(await a,b,c,d)}static _postWorkerMessageSync(a,b,c,d){if(!(a instanceof Worker))return-1;let f=e._workerMessageId++;a.postMessage({id:f,type:b,data:c},d);return f}}e.DEFAULT_CANVAS_SIZE=400;e.NO_QR_CODE_FOUND="No QR code found";
-e._disableBarcodeDetector=!1;e._workerMessageId=0;return e})
-//# sourceMappingURL=qr-scanner.umd.min.js.map
diff --git a/qr-scanner.umd.min.js.map b/qr-scanner.umd.min.js.map
deleted file mode 100644
index 05d54ab..0000000
--- a/qr-scanner.umd.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"qr-scanner.umd.min.js","sources":["src/qr-scanner.ts"],"sourcesContent":["class QrScanner {\n    static readonly DEFAULT_CANVAS_SIZE = 400;\n    static readonly NO_QR_CODE_FOUND = 'No QR code found';\n    private static _disableBarcodeDetector = false;\n    private static _workerMessageId = 0;\n\n    /** @deprecated */\n    static set WORKER_PATH(workerPath: string) {\n        console.warn('Setting QrScanner.WORKER_PATH is not required and not supported anymore. '\n            + 'Have a look at the README for new setup instructions.');\n    }\n\n    static async hasCamera(): Promise<boolean> {\n        try {\n            return !!(await QrScanner.listCameras(false)).length;\n        } catch (e) {\n            return false;\n        }\n    }\n\n    static async listCameras(requestLabels = false): Promise<Array<QrScanner.Camera>> {\n        if (!navigator.mediaDevices) return [];\n\n        const enumerateCameras = async (): Promise<Array<MediaDeviceInfo>> =>\n            (await navigator.mediaDevices.enumerateDevices()).filter((device) => device.kind === 'videoinput');\n\n        // Note that enumerateDevices can always be called and does not prompt the user for permission.\n        // However, enumerateDevices only includes device labels if served via https and an active media stream exists\n        // or permission to access the camera was given. Therefore, if we're not getting labels but labels are requested\n        // ask for camera permission by opening a stream.\n        let openedStream: MediaStream | undefined;\n        try {\n            if (requestLabels && (await enumerateCameras()).every((camera) => !camera.label)) {\n                openedStream = await navigator.mediaDevices.getUserMedia({ audio: false, video: true });\n            }\n        } catch (e) {\n            // Fail gracefully, especially if the device has no camera or on mobile when the camera is already in use\n            // and some browsers disallow a second stream.\n        }\n\n        try {\n            return (await enumerateCameras()).map((camera, i) => ({\n                id: camera.deviceId,\n                label: camera.label || (i === 0 ? 'Default Camera' : `Camera ${i + 1}`),\n            }));\n        } finally {\n            // close the stream we just opened for getting camera access for listing the device labels\n            if (openedStream) {\n                console.warn('Call listCameras after successfully starting a QR scanner to avoid creating '\n                    + 'a temporary video stream');\n                QrScanner._stopVideoStream(openedStream);\n            }\n        }\n    }\n\n    readonly $video: HTMLVideoElement;\n    readonly $canvas: HTMLCanvasElement;\n    readonly $overlay?: HTMLDivElement;\n    private readonly $codeOutlineHighlight?: SVGSVGElement;\n    private readonly _onDecode?: (result: QrScanner.ScanResult) => void;\n    private readonly _legacyOnDecode?: (result: string) => void;\n    private readonly _legacyCanvasSize: number = QrScanner.DEFAULT_CANVAS_SIZE;\n    private _preferredCamera: QrScanner.FacingMode | QrScanner.DeviceId = 'environment';\n    private readonly _maxScansPerSecond: number = 25;\n    private _lastScanTimestamp: number = -1;\n    private _scanRegion: QrScanner.ScanRegion;\n    private _codeOutlineHighlightRemovalTimeout?: number;\n    private _qrEnginePromise: Promise<Worker | BarcodeDetector>\n    private _active: boolean = false;\n    private _paused: boolean = false;\n    private _flashOn: boolean = false;\n    private _destroyed: boolean = false;\n\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: QrScanner.ScanResult) => void,\n        options: {\n            onDecodeError?: (error: Error | string) => void,\n            calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n            preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n            maxScansPerSecond?: number;\n            highlightScanRegion?: boolean,\n            highlightCodeOutline?: boolean,\n            overlay?: HTMLDivElement,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n    );\n    /** @deprecated */\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: string) => void,\n        onDecodeError?: (error: Error | string) => void,\n        calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    );\n    /** @deprecated */\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: (result: string) => void,\n        onDecodeError?: (error: Error | string) => void,\n        canvasSize?: number,\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    );\n    /** @deprecated */\n    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, canvasSize?: number);\n    constructor(\n        video: HTMLVideoElement,\n        onDecode: ((result: QrScanner.ScanResult) => void) | ((result: string) => void),\n        canvasSizeOrOnDecodeErrorOrOptions?: number | ((error: Error | string) => void) | {\n            onDecodeError?: (error: Error | string) => void,\n            calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion,\n            preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n            maxScansPerSecond?: number;\n            highlightScanRegion?: boolean,\n            highlightCodeOutline?: boolean,\n            overlay?: HTMLDivElement,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n        canvasSizeOrCalculateScanRegion?: number | ((video: HTMLVideoElement) => QrScanner.ScanRegion),\n        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId,\n    ) {\n        this.$video = video;\n        this.$canvas = document.createElement('canvas');\n\n        if (canvasSizeOrOnDecodeErrorOrOptions && typeof canvasSizeOrOnDecodeErrorOrOptions === 'object') {\n            // we got an options object using the new api\n            this._onDecode = onDecode as QrScanner['_onDecode'];\n        } else {\n            if (canvasSizeOrOnDecodeErrorOrOptions || canvasSizeOrCalculateScanRegion || preferredCamera) {\n                console.warn('You\\'re using a deprecated version of the QrScanner constructor which will be removed in '\n                    + 'the future');\n            } else {\n                // Only video and onDecode were specified and we can't distinguish between new or old api usage. For\n                // backwards compatibility we have to assume the old api for now. The options object is marked as non-\n                // optional in the parameter list above to make clear that ScanResult instead of string is only passed\n                // if an options object was provided. However, in the future once legacy support is removed, the options\n                // object should become optional.\n                console.warn('Note that the type of the scan result passed to onDecode will change in the future. '\n                    + 'To already switch to the new api today, you can pass returnDetailedScanResult: true.');\n            }\n            this._legacyOnDecode = onDecode as QrScanner['_legacyOnDecode'];\n        }\n\n        const options = typeof canvasSizeOrOnDecodeErrorOrOptions === 'object'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : {};\n        this._onDecodeError = options.onDecodeError || (typeof canvasSizeOrOnDecodeErrorOrOptions === 'function'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : this._onDecodeError);\n        this._calculateScanRegion = options.calculateScanRegion || (typeof canvasSizeOrCalculateScanRegion==='function'\n            ? canvasSizeOrCalculateScanRegion\n            : this._calculateScanRegion);\n        this._preferredCamera = options.preferredCamera || preferredCamera || this._preferredCamera;\n        this._legacyCanvasSize = typeof canvasSizeOrOnDecodeErrorOrOptions === 'number'\n            ? canvasSizeOrOnDecodeErrorOrOptions\n            : typeof canvasSizeOrCalculateScanRegion === 'number'\n                ? canvasSizeOrCalculateScanRegion\n                : this._legacyCanvasSize;\n        this._maxScansPerSecond = options.maxScansPerSecond || this._maxScansPerSecond;\n\n        this._onPlay = this._onPlay.bind(this);\n        this._onLoadedMetaData = this._onLoadedMetaData.bind(this);\n        this._onVisibilityChange = this._onVisibilityChange.bind(this);\n        this._updateOverlay = this._updateOverlay.bind(this);\n\n        // @ts-ignore\n        video.disablePictureInPicture = true;\n        // Allow inline playback on iPhone instead of requiring full screen playback,\n        // see https://webkit.org/blog/6784/new-video-policies-for-ios/\n        // @ts-ignore\n        video.playsInline = true;\n        // Allow play() on iPhone without requiring a user gesture. Should not really be needed as camera stream\n        // includes no audio, but just to be safe.\n        video.muted = true;\n\n        // Avoid Safari stopping the video stream on a hidden video.\n        // See https://github.com/cozmo/jsQR/issues/185\n        let shouldHideVideo = false;\n        if (video.hidden) {\n            video.hidden = false;\n            shouldHideVideo = true;\n        }\n        if (!document.body.contains(video)) {\n            document.body.appendChild(video);\n            shouldHideVideo = true;\n        }\n        const videoContainer = video.parentElement!;\n\n        if (options.highlightScanRegion || options.highlightCodeOutline) {\n            const gotExternalOverlay = !!options.overlay;\n            this.$overlay = options.overlay || document.createElement('div');\n            const overlayStyle = this.$overlay.style;\n            overlayStyle.position = 'absolute';\n            overlayStyle.display = 'none';\n            overlayStyle.pointerEvents = 'none';\n            this.$overlay.classList.add('scan-region-highlight');\n            if (!gotExternalOverlay && options.highlightScanRegion) {\n                // default style; can be overwritten via css, e.g. by changing the svg's stroke color, hiding the\n                // .scan-region-highlight-svg, setting a border, outline, background, etc.\n                this.$overlay.innerHTML = '<svg class=\"scan-region-highlight-svg\" viewBox=\"0 0 238 238\" '\n                    + 'preserveAspectRatio=\"none\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;'\n                    + 'fill:none;stroke:#e9b213;stroke-width:4;stroke-linecap:round;stroke-linejoin:round\">'\n                    + '<path d=\"M31 2H10a8 8 0 0 0-8 8v21M207 2h21a8 8 0 0 1 8 8v21m0 176v21a8 8 0 0 1-8 8h-21m-176 '\n                    + '0H10a8 8 0 0 1-8-8v-21\"/></svg>';\n                try {\n                    this.$overlay.firstElementChild!.animate({ transform: ['scale(.98)', 'scale(1.01)'] }, {\n                        duration: 400,\n                        iterations: Infinity,\n                        direction: 'alternate',\n                        easing: 'ease-in-out',\n                    });\n                } catch (e) {}\n                videoContainer.insertBefore(this.$overlay, this.$video.nextSibling);\n            }\n            if (options.highlightCodeOutline) {\n                // default style; can be overwritten via css\n                this.$overlay.insertAdjacentHTML(\n                    'beforeend',\n                    '<svg class=\"code-outline-highlight\" preserveAspectRatio=\"none\" style=\"display:none;width:100%;'\n                        + 'height:100%;fill:none;stroke:#e9b213;stroke-width:5;stroke-dasharray:25;'\n                        + 'stroke-linecap:round;stroke-linejoin:round\"><polygon/></svg>',\n                );\n                this.$codeOutlineHighlight = this.$overlay.lastElementChild as SVGSVGElement;\n            }\n        }\n        this._scanRegion = this._calculateScanRegion(video);\n\n        requestAnimationFrame(() => {\n            // Checking in requestAnimationFrame which should avoid a potential additional re-flow for getComputedStyle.\n            const videoStyle = window.getComputedStyle(video);\n            if (videoStyle.display === 'none') {\n                video.style.setProperty('display', 'block', 'important');\n                shouldHideVideo = true;\n            }\n            if (videoStyle.visibility !== 'visible') {\n                video.style.setProperty('visibility', 'visible', 'important');\n                shouldHideVideo = true;\n            }\n            if (shouldHideVideo) {\n                // Hide the video in a way that doesn't cause Safari to stop the playback.\n                console.warn('QrScanner has overwritten the video hiding style to avoid Safari stopping the playback.');\n                video.style.opacity = '0';\n                video.style.width = '0';\n                video.style.height = '0';\n                if (this.$overlay && this.$overlay.parentElement) {\n                    this.$overlay.parentElement.removeChild(this.$overlay);\n                }\n                // @ts-ignore\n                delete this.$overlay!;\n                // @ts-ignore\n                delete this.$codeOutlineHighlight!;\n            }\n\n            if (this.$overlay) {\n                this._updateOverlay();\n            }\n        });\n\n        video.addEventListener('play', this._onPlay);\n        video.addEventListener('loadedmetadata', this._onLoadedMetaData);\n        document.addEventListener('visibilitychange', this._onVisibilityChange);\n        window.addEventListener('resize', this._updateOverlay);\n\n        this._qrEnginePromise = QrScanner.createQrEngine();\n    }\n\n    async hasFlash(): Promise<boolean> {\n        let stream: MediaStream | undefined;\n        try {\n            if (this.$video.srcObject) {\n                if (!(this.$video.srcObject instanceof MediaStream)) return false; // srcObject is not a camera stream\n                stream = this.$video.srcObject;\n            } else {\n                stream = (await this._getCameraStream()).stream;\n            }\n            return 'torch' in stream.getVideoTracks()[0].getSettings();\n        } catch (e) {\n            return false;\n        } finally {\n            // close the stream we just opened for detecting whether it supports flash\n            if (stream && stream !== this.$video.srcObject) {\n                console.warn('Call hasFlash after successfully starting the scanner to avoid creating '\n                    + 'a temporary video stream');\n                QrScanner._stopVideoStream(stream);\n            }\n        }\n    }\n\n    isFlashOn(): boolean {\n        return this._flashOn;\n    }\n\n    async toggleFlash(): Promise<void> {\n        if (this._flashOn) {\n            await this.turnFlashOff();\n        } else {\n            await this.turnFlashOn();\n        }\n    }\n\n    async turnFlashOn(): Promise<void> {\n        if (this._flashOn || this._destroyed) return;\n        this._flashOn = true;\n        if (!this._active || this._paused) return; // flash will be turned on later on .start()\n        try {\n            if (!await this.hasFlash()) throw 'No flash available';\n            // Note that the video track is guaranteed to exist and to be a MediaStream due to the check in hasFlash\n            await (this.$video.srcObject as MediaStream).getVideoTracks()[0].applyConstraints({\n                // @ts-ignore: constraint 'torch' is unknown to ts\n                advanced: [{ torch: true }],\n            });\n        } catch (e) {\n            this._flashOn = false;\n            throw e;\n        }\n    }\n\n    async turnFlashOff(): Promise<void> {\n        if (!this._flashOn) return;\n        // applyConstraints with torch: false does not work to turn the flashlight off, as a stream's torch stays\n        // continuously on, see https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints#torch. Therefore,\n        // we have to stop the stream to turn the flashlight off.\n        this._flashOn = false;\n        await this._restartVideoStream();\n    }\n\n    destroy(): void {\n        this.$video.removeEventListener('loadedmetadata', this._onLoadedMetaData);\n        this.$video.removeEventListener('play', this._onPlay);\n        document.removeEventListener('visibilitychange', this._onVisibilityChange);\n        window.removeEventListener('resize', this._updateOverlay);\n\n        this._destroyed = true;\n        this._flashOn = false;\n        this.stop(); // sets this._paused = true and this._active = false\n        QrScanner._postWorkerMessage(this._qrEnginePromise, 'close');\n    }\n\n    async start(): Promise<void> {\n        if (this._destroyed) throw new Error('The QR scanner can not be started as it had been destroyed.');\n        if (this._active && !this._paused) return;\n\n        if (window.location.protocol !== 'https:') {\n            // warn but try starting the camera anyways\n            console.warn('The camera stream is only accessible if the page is transferred via https.');\n        }\n\n        this._active = true;\n        if (document.hidden) return; // camera will be started as soon as tab is in foreground\n        this._paused = false;\n        if (this.$video.srcObject) {\n            // camera stream already/still set\n            await this.$video.play();\n            return;\n        }\n\n        try {\n            const { stream, facingMode } = await this._getCameraStream();\n            if (!this._active || this._paused) {\n                // was stopped in the meantime\n                QrScanner._stopVideoStream(stream);\n                return;\n            }\n            this._setVideoMirror(facingMode);\n            this.$video.srcObject = stream;\n            await this.$video.play();\n\n            // Restart the flash if it was previously on\n            if (this._flashOn) {\n                this._flashOn = false; // force turnFlashOn to restart the flash\n                this.turnFlashOn().catch(() => {});\n            }\n        } catch (e) {\n            if (this._paused) return;\n            this._active = false;\n            throw e;\n        }\n    }\n\n    stop(): void {\n        this.pause();\n        this._active = false;\n    }\n\n    async pause(stopStreamImmediately = false): Promise<boolean> {\n        this._paused = true;\n        if (!this._active) return true;\n        this.$video.pause();\n\n        if (this.$overlay) {\n            this.$overlay.style.display = 'none';\n        }\n\n        const stopStream = () => {\n            if (this.$video.srcObject instanceof MediaStream) {\n                // revoke srcObject only if it's a stream which was likely set by us\n                QrScanner._stopVideoStream(this.$video.srcObject);\n                this.$video.srcObject = null;\n            }\n        };\n\n        if (stopStreamImmediately) {\n            stopStream();\n            return true;\n        }\n\n        await new Promise((resolve) => setTimeout(resolve, 300));\n        if (!this._paused) return false;\n        stopStream();\n        return true;\n    }\n\n    async setCamera(facingModeOrDeviceId: QrScanner.FacingMode | QrScanner.DeviceId): Promise<void> {\n        if (facingModeOrDeviceId === this._preferredCamera) return;\n        this._preferredCamera = facingModeOrDeviceId;\n        // Restart the scanner with the new camera which will also update the video mirror and the scan region.\n        await this._restartVideoStream();\n    }\n\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        options: {\n            scanRegion?: QrScanner.ScanRegion | null,\n            qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n            canvas?: HTMLCanvasElement | null,\n            disallowCanvasResizing?: boolean,\n            alsoTryWithoutScanRegion?: boolean,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        },\n    ): Promise<QrScanner.ScanResult>;\n    /** @deprecated */\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        scanRegion?: QrScanner.ScanRegion | null,\n        qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing?: boolean,\n        alsoTryWithoutScanRegion?: boolean,\n    ): Promise<string>;\n    static async scanImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n        scanRegionOrOptions?: QrScanner.ScanRegion | {\n            scanRegion?: QrScanner.ScanRegion | null,\n            qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n            canvas?: HTMLCanvasElement | null,\n            disallowCanvasResizing?: boolean,\n            alsoTryWithoutScanRegion?: boolean,\n            /** just a temporary flag until we switch entirely to the new api */\n            returnDetailedScanResult?: true,\n        } | null,\n        qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing: boolean = false,\n        alsoTryWithoutScanRegion: boolean = false,\n    ): Promise<string | QrScanner.ScanResult> {\n        let scanRegion: QrScanner.ScanRegion | null | undefined;\n        let returnDetailedScanResult = false;\n        if (scanRegionOrOptions && (\n            'scanRegion' in scanRegionOrOptions\n            || 'qrEngine' in scanRegionOrOptions\n            || 'canvas' in scanRegionOrOptions\n            || 'disallowCanvasResizing' in scanRegionOrOptions\n            || 'alsoTryWithoutScanRegion' in scanRegionOrOptions\n            || 'returnDetailedScanResult' in scanRegionOrOptions\n        )) {\n            // we got an options object using the new api\n            scanRegion = scanRegionOrOptions.scanRegion;\n            qrEngine = scanRegionOrOptions.qrEngine;\n            canvas = scanRegionOrOptions.canvas;\n            disallowCanvasResizing = scanRegionOrOptions.disallowCanvasResizing || false;\n            alsoTryWithoutScanRegion = scanRegionOrOptions.alsoTryWithoutScanRegion || false;\n            returnDetailedScanResult = true;\n        } else if (scanRegionOrOptions || qrEngine || canvas || disallowCanvasResizing || alsoTryWithoutScanRegion) {\n            console.warn('You\\'re using a deprecated api for scanImage which will be removed in the future.');\n        } else {\n            // Only imageOrFileOrBlobOrUrl was specified and we can't distinguish between new or old api usage. For\n            // backwards compatibility we have to assume the old api for now. The options object is marked as non-\n            // optional in the parameter list above to make clear that ScanResult instead of string is only returned if\n            // an options object was provided. However, in the future once legacy support is removed, the options object\n            // should become optional.\n            console.warn('Note that the return type of scanImage will change in the future. To already switch to the '\n                + 'new api today, you can pass returnDetailedScanResult: true.');\n        }\n\n        const gotExternalEngine = !!qrEngine;\n\n        try {\n            let image: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n                | SVGImageElement;\n            let canvasContext: CanvasRenderingContext2D;\n            [qrEngine, image] = await Promise.all([\n                qrEngine || QrScanner.createQrEngine(),\n                QrScanner._loadImage(imageOrFileOrBlobOrUrl),\n            ]);\n            [canvas, canvasContext] = QrScanner._drawToCanvas(image, scanRegion, canvas, disallowCanvasResizing);\n            let detailedScanResult: QrScanner.ScanResult;\n\n            if (qrEngine instanceof Worker) {\n                const qrEngineWorker = qrEngine; // for ts to know that it's still a worker later in the event listeners\n                if (!gotExternalEngine) {\n                    // Enable scanning of inverted color qr codes.\n                    QrScanner._postWorkerMessageSync(qrEngineWorker, 'inversionMode', 'both');\n                }\n                detailedScanResult = await new Promise((resolve, reject) => {\n                    let timeout: number;\n                    let onMessage: (event: MessageEvent) => void;\n                    let onError: (error: ErrorEvent | string) => void;\n                    let expectedResponseId = -1;\n                    onMessage = (event: MessageEvent) => {\n                        if (event.data.id !== expectedResponseId) {\n                            return;\n                        }\n                        qrEngineWorker.removeEventListener('message', onMessage);\n                        qrEngineWorker.removeEventListener('error', onError);\n                        clearTimeout(timeout);\n                        if (event.data.data !== null) {\n                            resolve({\n                                data: event.data.data,\n                                cornerPoints: QrScanner._convertPoints(event.data.cornerPoints, scanRegion),\n                                bytes: event.data.bytes\n                            });\n                        } else {\n                            reject(QrScanner.NO_QR_CODE_FOUND);\n                        }\n                    };\n                    onError = (error: ErrorEvent | string) => {\n                        qrEngineWorker.removeEventListener('message', onMessage);\n                        qrEngineWorker.removeEventListener('error', onError);\n                        clearTimeout(timeout);\n                        const errorMessage = !error ? 'Unknown Error' : ((error as ErrorEvent).message || error);\n                        reject('Scanner error: ' + errorMessage);\n                    };\n                    qrEngineWorker.addEventListener('message', onMessage);\n                    qrEngineWorker.addEventListener('error', onError);\n                    timeout = setTimeout(() => onError('timeout'), 10000);\n                    const imageData = canvasContext.getImageData(0, 0, canvas!.width, canvas!.height);\n                    expectedResponseId = QrScanner._postWorkerMessageSync(\n                        qrEngineWorker,\n                        'decode',\n                        imageData,\n                        [imageData.data.buffer],\n                    );\n                });\n            } else {\n                detailedScanResult = await Promise.race([\n                    new Promise<QrScanner.ScanResult>((resolve, reject) => window.setTimeout(\n                        () => reject('Scanner error: timeout'),\n                        10000,\n                    )),\n                    (async (): Promise<QrScanner.ScanResult> => {\n                        try {\n                            const [scanResult] = await qrEngine.detect(canvas!);\n                            if (!scanResult) throw QrScanner.NO_QR_CODE_FOUND;\n                            return {\n                                data: scanResult.rawValue,\n                                cornerPoints: QrScanner._convertPoints(scanResult.cornerPoints, scanRegion),\n                                bytes: scanResult.rawValue.split('').map(c => c.charCodeAt(0)),\n                            };\n                        } catch (e) {\n                            const errorMessage = (e as Error).message || e as string;\n                            if (/not implemented|service unavailable/.test(errorMessage)) {\n                                // Not implemented can apparently for some reason happen even though getSupportedFormats\n                                // in createQrScanner reported that it's supported, see issue #98.\n                                // Service unavailable can happen after some time when the BarcodeDetector crashed and\n                                // can theoretically be recovered from by creating a new BarcodeDetector. However, in\n                                // newer browsers this issue does not seem to be present anymore and therefore we do not\n                                // apply this optimization anymore but just set _disableBarcodeDetector in both cases.\n                                // Also note that if we got an external qrEngine that crashed, we should possibly notify\n                                // the caller about it, but we also don't do this here, as it's such an unlikely case.\n                                QrScanner._disableBarcodeDetector = true;\n                                // retry without passing the broken BarcodeScanner instance\n                                return QrScanner.scanImage(imageOrFileOrBlobOrUrl, {\n                                    scanRegion,\n                                    canvas,\n                                    disallowCanvasResizing,\n                                    alsoTryWithoutScanRegion,\n                                });\n                            }\n                            throw `Scanner error: ${errorMessage}`;\n                        }\n                    })(),\n                ]);\n            }\n            return returnDetailedScanResult ? detailedScanResult : detailedScanResult.data;\n        } catch (e) {\n            if (!scanRegion || !alsoTryWithoutScanRegion) throw e;\n            const detailedScanResult = await QrScanner.scanImage(\n                imageOrFileOrBlobOrUrl,\n                { qrEngine, canvas, disallowCanvasResizing },\n            );\n            return returnDetailedScanResult ? detailedScanResult : detailedScanResult.data;\n        } finally {\n            if (!gotExternalEngine) {\n                QrScanner._postWorkerMessage(qrEngine!, 'close');\n            }\n        }\n    }\n\n    setGrayscaleWeights(red: number, green: number, blue: number, useIntegerApproximation: boolean = true): void {\n        // Note that for the native BarcodeDecoder or if the worker was destroyed, this is a no-op. However, the native\n        // implementations work also well with colored qr codes.\n        QrScanner._postWorkerMessage(\n            this._qrEnginePromise,\n            'grayscaleWeights',\n            { red, green, blue, useIntegerApproximation }\n        );\n    }\n\n    setInversionMode(inversionMode: QrScanner.InversionMode): void {\n        // Note that for the native BarcodeDecoder or if the worker was destroyed, this is a no-op. However, the native\n        // implementations scan normal and inverted qr codes by default\n        QrScanner._postWorkerMessage(this._qrEnginePromise, 'inversionMode', inversionMode);\n    }\n\n    static async createQrEngine(): Promise<Worker | BarcodeDetector>;\n    /** @deprecated */\n    static async createQrEngine(workerPath: string): Promise<Worker | BarcodeDetector>;\n    static async createQrEngine(workerPath?: string): Promise<Worker | BarcodeDetector> {\n        if (workerPath) {\n            console.warn('Specifying a worker path is not required and not supported anymore.');\n        }\n\n        // @ts-ignore no types defined for import\n        const createWorker = () => (import('./qr-scanner-worker.min.js') as Promise<{ createWorker: () => Worker }>)\n            .then((module) => module.createWorker());\n\n        const useBarcodeDetector = !QrScanner._disableBarcodeDetector\n            && 'BarcodeDetector' in window\n            && BarcodeDetector.getSupportedFormats\n            && (await BarcodeDetector.getSupportedFormats()).includes('qr_code');\n\n        if (!useBarcodeDetector) return createWorker();\n\n        // On Macs with an M1/M2 processor and macOS Ventura (macOS version 13), the BarcodeDetector is broken in\n        // Chromium based browsers, regardless of the version. For that constellation, the BarcodeDetector does not\n        // error but does not detect QR codes. Macs without an M1/M2 or before Ventura are fine.\n        // See issue #209 and https://bugs.chromium.org/p/chromium/issues/detail?id=1382442\n        // TODO update this once the issue in macOS is fixed\n        const userAgentData = navigator.userAgentData;\n        const isChromiumOnMacWithArmVentura = userAgentData // all Chromium browsers support userAgentData\n            && userAgentData.brands.some(({ brand }) => /Chromium/i.test(brand))\n            && /mac ?OS/i.test(userAgentData.platform)\n            // Does it have an ARM chip (e.g. M1/M2) and Ventura? Check this last as getHighEntropyValues can\n            // theoretically trigger a browser prompt, although no browser currently does seem to show one.\n            // If browser or user refused to return the requested values, assume broken ARM Ventura, to be safe.\n            && await userAgentData.getHighEntropyValues(['architecture', 'platformVersion'])\n                .then(({ architecture, platformVersion }) =>\n                    /arm/i.test(architecture || 'arm') && parseInt(platformVersion || '13') >= /* Ventura */ 13)\n                .catch(() => true);\n        if (isChromiumOnMacWithArmVentura) return createWorker();\n\n        return new BarcodeDetector({ formats: ['qr_code'] });\n    }\n\n    private _onPlay(): void {\n        this._scanRegion = this._calculateScanRegion(this.$video);\n        this._updateOverlay();\n        if (this.$overlay) {\n            this.$overlay.style.display = '';\n        }\n        this._scanFrame();\n    }\n\n    private _onLoadedMetaData(): void {\n        this._scanRegion = this._calculateScanRegion(this.$video);\n        this._updateOverlay();\n    }\n\n    private _onVisibilityChange(): void {\n        if (document.hidden) {\n            this.pause();\n        } else if (this._active) {\n            this.start();\n        }\n    }\n\n    private _calculateScanRegion(video: HTMLVideoElement): QrScanner.ScanRegion {\n        // Default scan region calculation. Note that this can be overwritten in the constructor.\n        const smallestDimension = Math.min(video.videoWidth, video.videoHeight);\n        const scanRegionSize = Math.round(2 / 3 * smallestDimension);\n        return {\n            x: Math.round((video.videoWidth - scanRegionSize) / 2),\n            y: Math.round((video.videoHeight - scanRegionSize) / 2),\n            width: scanRegionSize,\n            height: scanRegionSize,\n            downScaledWidth: this._legacyCanvasSize,\n            downScaledHeight: this._legacyCanvasSize,\n        };\n    }\n\n    private _updateOverlay(): void {\n        requestAnimationFrame(() => {\n            // Running in requestAnimationFrame which should avoid a potential additional re-flow for getComputedStyle\n            // and offsetWidth, offsetHeight, offsetLeft, offsetTop.\n            if (!this.$overlay) return;\n            const video = this.$video;\n            const videoWidth = video.videoWidth;\n            const videoHeight = video.videoHeight;\n            const elementWidth = video.offsetWidth;\n            const elementHeight = video.offsetHeight;\n            const elementX = video.offsetLeft;\n            const elementY = video.offsetTop;\n\n            const videoStyle = window.getComputedStyle(video);\n            const videoObjectFit = videoStyle.objectFit;\n            const videoAspectRatio = videoWidth / videoHeight;\n            const elementAspectRatio = elementWidth / elementHeight;\n            let videoScaledWidth: number;\n            let videoScaledHeight: number;\n            switch (videoObjectFit) {\n                case 'none':\n                    videoScaledWidth = videoWidth;\n                    videoScaledHeight = videoHeight;\n                    break;\n                case 'fill':\n                    videoScaledWidth = elementWidth;\n                    videoScaledHeight = elementHeight;\n                    break;\n                default: // 'cover', 'contains', 'scale-down'\n                    if (videoObjectFit === 'cover'\n                        ? videoAspectRatio > elementAspectRatio\n                        : videoAspectRatio < elementAspectRatio) {\n                        // The scaled height is the element height\n                        // - for 'cover' if the video aspect ratio is wider than the element aspect ratio\n                        //   (scaled height matches element height and scaled width overflows element width)\n                        // - for 'contains'/'scale-down' if element aspect ratio is wider than the video aspect ratio\n                        //   (scaled height matched element height and element width overflows scaled width)\n                        videoScaledHeight = elementHeight;\n                        videoScaledWidth = videoScaledHeight * videoAspectRatio;\n                    } else {\n                        videoScaledWidth = elementWidth;\n                        videoScaledHeight = videoScaledWidth / videoAspectRatio;\n                    }\n                    if (videoObjectFit === 'scale-down') {\n                        // for 'scale-down' the dimensions are the minimum of 'contains' and 'none'\n                        videoScaledWidth = Math.min(videoScaledWidth, videoWidth);\n                        videoScaledHeight = Math.min(videoScaledHeight, videoHeight);\n                    }\n            }\n\n            // getComputedStyle is so nice to convert keywords (left, center, right, top, bottom) to percent and makes\n            // sure to set the default of 50% if only one or no component was provided, therefore we can be sure that\n            // both components are set. Additionally, it converts units other than px (e.g. rem) to px.\n            const [videoX, videoY] = videoStyle.objectPosition.split(' ').map((length, i) => {\n                const lengthValue = parseFloat(length);\n                return length.endsWith('%')\n                    ? (!i ? elementWidth - videoScaledWidth : elementHeight - videoScaledHeight) * lengthValue / 100\n                    : lengthValue;\n            });\n\n            const regionWidth = this._scanRegion.width || videoWidth;\n            const regionHeight = this._scanRegion.height || videoHeight;\n            const regionX = this._scanRegion.x || 0;\n            const regionY = this._scanRegion.y || 0;\n\n            const overlayStyle = this.$overlay.style;\n            overlayStyle.width = `${regionWidth / videoWidth * videoScaledWidth}px`;\n            overlayStyle.height = `${regionHeight / videoHeight * videoScaledHeight}px`;\n            overlayStyle.top = `${elementY + videoY + regionY / videoHeight * videoScaledHeight}px`;\n            const isVideoMirrored = /scaleX\\(-1\\)/.test(video.style.transform!);\n            overlayStyle.left = `${elementX\n                + (isVideoMirrored ? elementWidth - videoX - videoScaledWidth : videoX)\n                + (isVideoMirrored ? videoWidth - regionX - regionWidth : regionX) / videoWidth * videoScaledWidth}px`;\n            // apply same mirror as on video\n            overlayStyle.transform = video.style.transform;\n        });\n    }\n\n    private static _convertPoints(\n        points: QrScanner.Point[],\n        scanRegion?: QrScanner.ScanRegion | null,\n    ): QrScanner.Point[] {\n        if (!scanRegion) return points;\n        const offsetX = scanRegion.x || 0;\n        const offsetY = scanRegion.y || 0;\n        const scaleFactorX = scanRegion.width && scanRegion.downScaledWidth\n            ? scanRegion.width / scanRegion.downScaledWidth\n            : 1;\n        const scaleFactorY = scanRegion.height && scanRegion.downScaledHeight\n            ? scanRegion.height / scanRegion.downScaledHeight\n            : 1;\n        for (const point of points) {\n            point.x = point.x * scaleFactorX + offsetX;\n            point.y = point.y * scaleFactorY + offsetY;\n        }\n        return points;\n    }\n\n    private _scanFrame(): void {\n        if (!this._active || this.$video.paused || this.$video.ended) return;\n        // If requestVideoFrameCallback is available use that to avoid unnecessary scans on the same frame as the\n        // camera's framerate can be lower than the screen refresh rate and this._maxScansPerSecond, especially in dark\n        // settings where the exposure time is longer. Both, requestVideoFrameCallback and requestAnimationFrame are not\n        // being fired if the tab is in the background, which is what we want.\n        const requestFrame = 'requestVideoFrameCallback' in this.$video\n            // @ts-ignore\n            ? this.$video.requestVideoFrameCallback.bind(this.$video)\n            : requestAnimationFrame;\n        requestFrame(async () => {\n            if (this.$video.readyState <= 1) {\n                // Skip scans until the video is ready as drawImage() only works correctly on a video with readyState\n                // > 1, see https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage#Notes.\n                // This also avoids false positives for videos paused after a successful scan which remains visible on\n                // the canvas until the video is started again and ready.\n                this._scanFrame();\n                return;\n            }\n\n            const timeSinceLastScan = Date.now() - this._lastScanTimestamp;\n            const minimumTimeBetweenScans = 1000 / this._maxScansPerSecond;\n            if (timeSinceLastScan < minimumTimeBetweenScans) {\n                await new Promise((resolve) => setTimeout(resolve, minimumTimeBetweenScans - timeSinceLastScan));\n            }\n            // console.log('Scan rate:', Math.round(1000 / (Date.now() - this._lastScanTimestamp)));\n            this._lastScanTimestamp = Date.now();\n\n            let result: QrScanner.ScanResult | undefined;\n            try {\n                result = await QrScanner.scanImage(this.$video, {\n                    scanRegion: this._scanRegion,\n                    qrEngine: this._qrEnginePromise,\n                    canvas: this.$canvas,\n                });\n            } catch (error) {\n                if (!this._active) return;\n                this._onDecodeError(error as Error | string);\n            }\n\n            if (QrScanner._disableBarcodeDetector && !(await this._qrEnginePromise instanceof Worker)) {\n                // replace the disabled BarcodeDetector\n                this._qrEnginePromise = QrScanner.createQrEngine();\n            }\n\n            if (result) {\n                if (this._onDecode) {\n                    this._onDecode(result);\n                } else if (this._legacyOnDecode) {\n                    this._legacyOnDecode(result.data);\n                }\n\n                if (this.$codeOutlineHighlight) {\n                    clearTimeout(this._codeOutlineHighlightRemovalTimeout);\n                    this._codeOutlineHighlightRemovalTimeout = undefined;\n                    this.$codeOutlineHighlight.setAttribute(\n                        'viewBox',\n                        `${this._scanRegion.x || 0} `\n                            + `${this._scanRegion.y || 0} `\n                            + `${this._scanRegion.width || this.$video.videoWidth} `\n                            + `${this._scanRegion.height || this.$video.videoHeight}`,\n                    );\n                    const polygon = this.$codeOutlineHighlight.firstElementChild!;\n                    polygon.setAttribute('points', result.cornerPoints.map(({x, y}) => `${x},${y}`).join(' '));\n                    this.$codeOutlineHighlight.style.display = '';\n                }\n            } else if (this.$codeOutlineHighlight && !this._codeOutlineHighlightRemovalTimeout) {\n                // hide after timeout to make it flash less when on some frames the QR code is detected and on some not\n                this._codeOutlineHighlightRemovalTimeout = setTimeout(\n                    () => this.$codeOutlineHighlight!.style.display = 'none',\n                    100,\n                );\n            }\n\n            this._scanFrame();\n        });\n    }\n\n    private _onDecodeError(error: Error | string): void {\n        // default error handler; can be overwritten in the constructor\n        if (error === QrScanner.NO_QR_CODE_FOUND) return;\n        console.log(error);\n    }\n\n    private async _getCameraStream(): Promise<{ stream: MediaStream, facingMode: QrScanner.FacingMode }> {\n        if (!navigator.mediaDevices) throw 'Camera not found.';\n\n        const preferenceType = /^(environment|user)$/.test(this._preferredCamera)\n            ? 'facingMode'\n            : 'deviceId';\n        const constraintsWithoutCamera: Array<MediaTrackConstraints> = [{\n            width: { min: 1024 }\n        }, {\n            width: { min: 768 }\n        }, {}];\n        const constraintsWithCamera = constraintsWithoutCamera.map((constraint) => Object.assign({}, constraint, {\n            [preferenceType]: { exact: this._preferredCamera },\n        }));\n\n        for (const constraints of [...constraintsWithCamera, ...constraintsWithoutCamera]) {\n            try {\n                const stream = await navigator.mediaDevices.getUserMedia({ video: constraints, audio: false });\n                // Try to determine the facing mode from the stream, otherwise use a guess or 'environment' as\n                // default. Note that the guess is not always accurate as Safari returns cameras of different facing\n                // mode, even for exact facingMode constraints.\n                const facingMode = this._getFacingMode(stream)\n                    || (constraints.facingMode\n                        ? this._preferredCamera as QrScanner.FacingMode // a facing mode we were able to fulfill\n                        : (this._preferredCamera === 'environment'\n                            ? 'user' // switch as _preferredCamera was environment but we are not able to fulfill it\n                            : 'environment' // switch from unfulfilled user facingMode or default to environment\n                        )\n                    );\n                return { stream, facingMode };\n            } catch (e) {}\n        }\n\n        throw 'Camera not found.';\n    }\n\n    private async _restartVideoStream(): Promise<void> {\n        // Note that we always pause the stream and not only if !this._paused as even if this._paused === true, the\n        // stream might still be running, as it's by default only stopped after a delay of 300ms.\n        const wasPaused = this._paused;\n        const paused = await this.pause(true);\n        if (!paused || wasPaused || !this._active) return;\n        await this.start();\n    }\n\n    private static _stopVideoStream(stream : MediaStream): void {\n        for (const track of stream.getTracks()) {\n            track.stop(); //  note that this will also automatically turn the flashlight off\n            stream.removeTrack(track);\n        }\n    }\n\n    private _setVideoMirror(facingMode: QrScanner.FacingMode): void {\n        // in user facing mode mirror the video to make it easier for the user to position the QR code\n        const scaleFactor = facingMode === 'user'? -1 : 1;\n        this.$video.style.transform = 'scaleX(' + scaleFactor + ')';\n    }\n\n    private _getFacingMode(videoStream: MediaStream): QrScanner.FacingMode | null {\n        const videoTrack = videoStream.getVideoTracks()[0];\n        if (!videoTrack) return null; // unknown\n        // inspired by https://github.com/JodusNodus/react-qr-reader/blob/master/src/getDeviceId.js#L13\n        return /rear|back|environment/i.test(videoTrack.label)\n            ? 'environment'\n            : /front|user|face/i.test(videoTrack.label)\n                ? 'user'\n                : null; // unknown\n    }\n\n    private static _drawToCanvas(\n        image: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement,\n        scanRegion?: QrScanner.ScanRegion | null,\n        canvas?: HTMLCanvasElement | null,\n        disallowCanvasResizing= false,\n    ): [HTMLCanvasElement, CanvasRenderingContext2D] {\n        canvas = canvas || document.createElement('canvas');\n        const scanRegionX = scanRegion && scanRegion.x ? scanRegion.x : 0;\n        const scanRegionY = scanRegion && scanRegion.y ? scanRegion.y : 0;\n        const scanRegionWidth = scanRegion && scanRegion.width\n            ? scanRegion.width\n            : (image as HTMLVideoElement).videoWidth || image.width as number;\n        const scanRegionHeight = scanRegion && scanRegion.height\n            ? scanRegion.height\n            : (image as HTMLVideoElement).videoHeight || image.height as number;\n\n        if (!disallowCanvasResizing) {\n            const canvasWidth = scanRegion && scanRegion.downScaledWidth\n                ? scanRegion.downScaledWidth\n                : scanRegionWidth;\n            const canvasHeight = scanRegion && scanRegion.downScaledHeight\n                ? scanRegion.downScaledHeight\n                : scanRegionHeight;\n            // Setting the canvas width or height clears the canvas, even if the values didn't change, therefore only\n            // set them if they actually changed.\n            if (canvas.width !== canvasWidth) {\n                canvas.width = canvasWidth;\n            }\n            if (canvas.height !== canvasHeight) {\n                canvas.height = canvasHeight;\n            }\n        }\n\n        const context = canvas.getContext('2d', { alpha: false })!;\n        context.imageSmoothingEnabled = false; // gives less blurry images\n        context.drawImage(\n            image,\n            scanRegionX, scanRegionY, scanRegionWidth, scanRegionHeight,\n            0, 0, canvas.width, canvas.height,\n        );\n        return [canvas, context];\n    }\n\n    private static async _loadImage(\n        imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n            | SVGImageElement | File | Blob | URL | String,\n    ): Promise<HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap\n        | SVGImageElement > {\n        if (imageOrFileOrBlobOrUrl instanceof Image) {\n            await QrScanner._awaitImageLoad(imageOrFileOrBlobOrUrl);\n            return imageOrFileOrBlobOrUrl;\n        } else if (imageOrFileOrBlobOrUrl instanceof HTMLVideoElement\n            || imageOrFileOrBlobOrUrl instanceof HTMLCanvasElement\n            || imageOrFileOrBlobOrUrl instanceof SVGImageElement\n            || 'OffscreenCanvas' in window && imageOrFileOrBlobOrUrl instanceof OffscreenCanvas\n            || 'ImageBitmap' in window && imageOrFileOrBlobOrUrl instanceof ImageBitmap) {\n            return imageOrFileOrBlobOrUrl;\n        } else if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob\n            || imageOrFileOrBlobOrUrl instanceof URL || typeof imageOrFileOrBlobOrUrl === 'string') {\n            const image = new Image();\n            if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {\n                image.src = URL.createObjectURL(imageOrFileOrBlobOrUrl);\n            } else {\n                image.src = imageOrFileOrBlobOrUrl.toString();\n            }\n            try {\n                await QrScanner._awaitImageLoad(image);\n                return image;\n            } finally {\n                if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {\n                    URL.revokeObjectURL(image.src);\n                }\n            }\n        } else {\n            throw 'Unsupported image type.';\n        }\n    }\n\n    private static async _awaitImageLoad(image: HTMLImageElement): Promise<void> {\n        if (image.complete && image.naturalWidth !== 0) return; // already loaded\n        await new Promise<void>((resolve, reject) => {\n            const listener = (event: ErrorEvent | Event) => {\n                image.removeEventListener('load', listener);\n                image.removeEventListener('error', listener);\n                if (event instanceof ErrorEvent) {\n                    reject('Image load error');\n                } else {\n                    resolve();\n                }\n            };\n            image.addEventListener('load', listener);\n            image.addEventListener('error', listener);\n        });\n    }\n\n    private static async _postWorkerMessage(\n        qrEngineOrQrEnginePromise: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector>,\n        type: string,\n        data?: any,\n        transfer?: Transferable[],\n    ): Promise<number> {\n        return QrScanner._postWorkerMessageSync(await qrEngineOrQrEnginePromise, type, data, transfer);\n    }\n\n    // sync version of _postWorkerMessage without performance overhead of async functions\n    private static _postWorkerMessageSync(\n        qrEngine: Worker | BarcodeDetector,\n        type: string,\n        data?: any,\n        transfer?: Transferable[],\n    ): number {\n        if (!(qrEngine instanceof Worker)) return -1;\n        const id = QrScanner._workerMessageId++;\n        qrEngine.postMessage({\n            id,\n            type,\n            data,\n        }, transfer);\n        return id;\n    }\n}\n\ndeclare namespace QrScanner {\n    export interface ScanRegion {\n        x?: number;\n        y?: number;\n        width?: number;\n        height?: number;\n        downScaledWidth?: number;\n        downScaledHeight?: number;\n    }\n\n    export type FacingMode = 'environment' | 'user';\n    export type DeviceId = string;\n\n    export interface Camera {\n        id: DeviceId;\n        label: string;\n    }\n\n    export type InversionMode = 'original' | 'invert' | 'both';\n\n    export interface Point {\n        x: number;\n        y: number;\n    }\n\n    export interface ScanResult {\n        data: string;\n        // In clockwise order, starting at top left, but this might not be guaranteed in the future.\n        cornerPoints: QrScanner.Point[];\n        bytes: Number[];\n    }\n}\n\n// simplified from https://wicg.github.io/shape-detection-api/#barcode-detection-api\ndeclare class BarcodeDetector {\n    constructor(options?: { formats: string[] });\n    static getSupportedFormats(): Promise<string[]>;\n    detect(image: ImageBitmapSource): Promise<Array<{ rawValue: string, cornerPoints: QrScanner.Point[] }>>;\n}\n\n// simplified from https://github.com/lukewarlow/user-agent-data-types/blob/master/index.d.ts\ndeclare global {\n    interface Navigator {\n        readonly userAgentData?: {\n            readonly 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\ No newline at end of file
diff --git a/rollup.config.js b/rollup.config.js
index cc964b6..3b631e9 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -28,7 +28,7 @@ export default () => [
     {
         input: 'src/worker.ts',
         output: {
-            file: 'qr-scanner-worker.min.js',
+            file: 'artifacts/qr-scanner-worker.min.js',
             format: 'esm',
             interop: false,
             sourcemap: true,
@@ -54,10 +54,10 @@ export default () => [
             // imports are now widely supported anyways.
             external: ['./qr-scanner-worker.min.js'],
             output: [{
-                file: 'qr-scanner.min.js',
+                file: 'artifacts/qr-scanner.min.js',
                 format: 'esm',
             }, {
-                file: 'qr-scanner.umd.min.js',
+                file: 'artifacts/qr-scanner.umd.min.js',
                 format: 'umd',
                 name: 'QrScanner',
             }],
@@ -66,11 +66,11 @@ export default () => [
         // legacy build specific settings
         {
             aliases: {
-                // redirect to the built version in the dist folder
-                './qr-scanner-worker.min.js': '../qr-scanner-worker.min.js',
+                // redirect to the built worker artifact for inlining in the legacy bundle
+                './qr-scanner-worker.min.js': '../artifacts/qr-scanner-worker.min.js',
             },
             output: [{
-                file: 'qr-scanner.legacy.min.js',
+                file: 'artifacts/qr-scanner.legacy.min.js',
                 // only providing a umd build and no esm build, as support for es modules is lower than es6 generally
                 format: 'umd',
                 name: 'QrScanner',
diff --git a/types/qr-scanner.d.ts b/types/qr-scanner.d.ts
deleted file mode 100644
index e6db015..0000000
--- a/types/qr-scanner.d.ts
+++ /dev/null
@@ -1,141 +0,0 @@
-/// <reference types="offscreencanvas" />
-declare class QrScanner {
-    static readonly DEFAULT_CANVAS_SIZE = 400;
-    static readonly NO_QR_CODE_FOUND = "No QR code found";
-    private static _disableBarcodeDetector;
-    private static _workerMessageId;
-    /** @deprecated */
-    static set WORKER_PATH(workerPath: string);
-    static hasCamera(): Promise<boolean>;
-    static listCameras(requestLabels?: boolean): Promise<Array<QrScanner.Camera>>;
-    readonly $video: HTMLVideoElement;
-    readonly $canvas: HTMLCanvasElement;
-    readonly $overlay?: HTMLDivElement;
-    private readonly $codeOutlineHighlight?;
-    private readonly _onDecode?;
-    private readonly _legacyOnDecode?;
-    private readonly _legacyCanvasSize;
-    private _preferredCamera;
-    private readonly _maxScansPerSecond;
-    private _lastScanTimestamp;
-    private _scanRegion;
-    private _codeOutlineHighlightRemovalTimeout?;
-    private _qrEnginePromise;
-    private _active;
-    private _paused;
-    private _flashOn;
-    private _destroyed;
-    constructor(video: HTMLVideoElement, onDecode: (result: QrScanner.ScanResult) => void, options: {
-        onDecodeError?: (error: Error | string) => void;
-        calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion;
-        preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId;
-        maxScansPerSecond?: number;
-        highlightScanRegion?: boolean;
-        highlightCodeOutline?: boolean;
-        overlay?: HTMLDivElement;
-        /** just a temporary flag until we switch entirely to the new api */
-        returnDetailedScanResult?: true;
-    });
-    /** @deprecated */
-    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, onDecodeError?: (error: Error | string) => void, calculateScanRegion?: (video: HTMLVideoElement) => QrScanner.ScanRegion, preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId);
-    /** @deprecated */
-    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, onDecodeError?: (error: Error | string) => void, canvasSize?: number, preferredCamera?: QrScanner.FacingMode | QrScanner.DeviceId);
-    /** @deprecated */
-    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, canvasSize?: number);
-    hasFlash(): Promise<boolean>;
-    isFlashOn(): boolean;
-    toggleFlash(): Promise<void>;
-    turnFlashOn(): Promise<void>;
-    turnFlashOff(): Promise<void>;
-    destroy(): void;
-    start(): Promise<void>;
-    stop(): void;
-    pause(stopStreamImmediately?: boolean): Promise<boolean>;
-    setCamera(facingModeOrDeviceId: QrScanner.FacingMode | QrScanner.DeviceId): Promise<void>;
-    static scanImage(imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap | SVGImageElement | File | Blob | URL | String, options: {
-        scanRegion?: QrScanner.ScanRegion | null;
-        qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null;
-        canvas?: HTMLCanvasElement | null;
-        disallowCanvasResizing?: boolean;
-        alsoTryWithoutScanRegion?: boolean;
-        /** just a temporary flag until we switch entirely to the new api */
-        returnDetailedScanResult?: true;
-    }): Promise<QrScanner.ScanResult>;
-    /** @deprecated */
-    static scanImage(imageOrFileOrBlobOrUrl: HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | OffscreenCanvas | ImageBitmap | SVGImageElement | File | Blob | URL | String, scanRegion?: QrScanner.ScanRegion | null, qrEngine?: Worker | BarcodeDetector | Promise<Worker | BarcodeDetector> | null, canvas?: HTMLCanvasElement | null, disallowCanvasResizing?: boolean, alsoTryWithoutScanRegion?: boolean): Promise<string>;
-    setGrayscaleWeights(red: number, green: number, blue: number, useIntegerApproximation?: boolean): void;
-    setInversionMode(inversionMode: QrScanner.InversionMode): void;
-    static createQrEngine(): Promise<Worker | BarcodeDetector>;
-    /** @deprecated */
-    static createQrEngine(workerPath: string): Promise<Worker | BarcodeDetector>;
-    private _onPlay;
-    private _onLoadedMetaData;
-    private _onVisibilityChange;
-    private _calculateScanRegion;
-    private _updateOverlay;
-    private static _convertPoints;
-    private _scanFrame;
-    private _onDecodeError;
-    private _getCameraStream;
-    private _restartVideoStream;
-    private static _stopVideoStream;
-    private _setVideoMirror;
-    private _getFacingMode;
-    private static _drawToCanvas;
-    private static _loadImage;
-    private static _awaitImageLoad;
-    private static _postWorkerMessage;
-    private static _postWorkerMessageSync;
-}
-declare namespace QrScanner {
-    interface ScanRegion {
-        x?: number;
-        y?: number;
-        width?: number;
-        height?: number;
-        downScaledWidth?: number;
-        downScaledHeight?: number;
-    }
-    type FacingMode = 'environment' | 'user';
-    type DeviceId = string;
-    interface Camera {
-        id: DeviceId;
-        label: string;
-    }
-    type InversionMode = 'original' | 'invert' | 'both';
-    interface Point {
-        x: number;
-        y: number;
-    }
-    interface ScanResult {
-        data: string;
-        cornerPoints: QrScanner.Point[];
-        bytes: Number[];
-    }
-}
-declare class BarcodeDetector {
-    constructor(options?: {
-        formats: string[];
-    });
-    static getSupportedFormats(): Promise<string[]>;
-    detect(image: ImageBitmapSource): Promise<Array<{
-        rawValue: string;
-        cornerPoints: QrScanner.Point[];
-    }>>;
-}
-declare global {
-    interface Navigator {
-        readonly userAgentData?: {
-            readonly platform: string;
-            readonly brands: Array<{
-                readonly brand: string;
-                readonly version: string;
-            }>;
-            getHighEntropyValues(hints: string[]): Promise<{
-                readonly architecture?: string;
-                readonly platformVersion?: string;
-            }>;
-        };
-    }
-}
-export default QrScanner;