v4.0.0

Breaking changes

• The alignArray algorithm has been improved to produce more useful diffs when content shifts in tall images. This will lead to different diff output from before.
• Dropped common-JS support. The library is now exported as an ESM library.

Full list of changes

• Replace jimp with sharp by @lencioni in #42
• Specify checkout method in CircleCI configs by @lencioni in #43
• Bump js-yaml from 3.14.1 to 3.14.2 by @dependabot[bot] in #44
• Switch from yarn to pnpm by @trotzig in #45
• Add five new snapshot test examples by @trotzig in #47
• Add profiling script by @trotzig in #48
• Add diff viewer server and four new snapshot examples by @trotzig in #49
• Optimize LCS with band-limited flat typed arrays (~1.9× faster) by @trotzig in #50
• Exclude test files from published npm package by @trotzig in #51
• Convert project to ESM and update authors by @trotzig in #52
• Improve LCS alignment using frequency-capped row matching by @trotzig in #53
• Switch to pnpm and add CLAUDE.md by @trotzig in #55
• Add second-pass placeholder simplification to reduce visual noise by @trotzig in #56

Full Changelog: v3.0.0...v4.0.0

v3.0.0

What's Changed

• Return negative colorDiff if pixel is darker by @lencioni in #41

Full Changelog: v2.4.0...v3.0.0

v2.4.0

What's Changed

• Remove array destructuring in colorDelta, add colorDeltaChannels, deprecate colorDelta by @lencioni in #40
• Bump micromatch from 4.0.7 to 4.0.8 by @dependabot in #39
• Bump qs from 6.10.1 to 6.13.0 by @dependabot in #38

Full Changelog: v2.3.0...v2.4.0

v2.3.0

What's Changed

• Handle almost-transparent and transparent pixels better by @trotzig in #37

Full Changelog: v2.2.1...v2.3.0

v2.2.1

This patch release updates some dev dependencies and other transitive dependencies. We have also added a repository field to the package.json, and updated the CI image used for running tests.

What's Changed

• Bump json5 from 2.2.0 to 2.2.3 by @dependabot in #26
• Bump qs from 6.5.2 to 6.5.3 by @dependabot in #25
• Update CI image from circleci/node:10 to cimg/node:lts by @lencioni in #29
• Add repository to package.json by @lencioni in #28
• Bump semver from 5.7.1 to 5.7.2 by @dependabot in #32
• Bump acorn from 5.7.3 to 5.7.4 by @dependabot in #8
• Bump hosted-git-info from 2.8.5 to 2.8.9 by @dependabot in #16
• Bump tmpl from 1.0.4 to 1.0.5 by @dependabot in #18
• Bump ws from 5.2.2 to 5.2.3 by @dependabot in #20
• Bump async from 2.6.3 to 2.6.4 by @dependabot in #23
• Bump decode-uri-component from 0.2.0 to 0.2.2 by @dependabot in #24
• Bump word-wrap from 1.2.3 to 1.2.5 by @dependabot in #30
• Bump follow-redirects from 1.14.1 to 1.15.6 by @dependabot in #31
• Bump ansi-regex from 3.0.0 to 3.0.1 by @dependabot in #34
• Bump minimatch from 3.0.4 to 3.1.2 by @dependabot in #35
• Update jest v24 to v29, http-server 0.12.3 to 14.1.1 by @lencioni in #36

New Contributors

• @dependabot made their first contribution in #26

Full Changelog: v2.2.0...v2.2.1

v2.2.0

This minor release makes diffs with images of different sizes slightly better. Where padding has to be added (on the smaller image) we no longer show a full magenta diff. Instead we show a semi-translucent magenta/gray area. This makes it easier to spot certain diffs.

v2.1.0

This minor release makes showing diffs for images of different dimensions better. Before, the trace and diff image wouldn't show much if the only change was (white) padding. Now it will highlight the whitespace areas.

v2.0.1

This version makes a performance improvement in deciding whether or not to apply the LCS algorithm. Instead of operating on hashed images, we now access the raw image data.

v2.0.0

Use YIQ colorspace to determine color distance instead of euclidean distance. #6

v1.1.0

• Add maxDiff to the return value #2