Updates4

README.md

@@ -43,8 +43,18 @@ module.exports = [
       }
    }
 ];
+
+```
+## Opt-in unused export checking
+
+If you'd like to opt-in to unused export linting, you can pass a third arg to `getTscLintingConfig` pointing to your sources, e.g. 
+
+```javascript
+getTscLintingConfig(['node_modules/*'], globals.browser, ['src/**'])
 ```
 
+Due to a current issue in the plugin used, this will require you to create a blank `.eslintrc` file, otherwise you'll get an error telling you to do so. :shrug:
+
 ## Integrating into your build
 
 - Run eslint as part of your build to ensure your JavaScript is up to snuff!

common-rules.js

@@ -183,7 +183,7 @@ const styleRules = {
    '@stylistic/comma-style': 'error',
    '@stylistic/computed-property-spacing': 'error',
    '@stylistic/dot-location': ['error', 'property'],
-   '@stylistic/func-call-spacing': 'error',
+   '@stylistic/function-call-spacing': 'error',
    '@stylistic/function-call-argument-newline': ['error', 'consistent'],
    '@stylistic/generator-star-spacing': 'error',
    '@stylistic/indent': [

eslint.config.js

@@ -1,4 +1,4 @@
 const getTscLintingConfig = require('./index');
 const globals = require('globals');
 
-module.exports = getTscLintingConfig(['node_modules/*'], globals.node);
+module.exports = getTscLintingConfig(['node_modules/*'], globals.node, ['example-files/**']);

example-files/js-file.js

@@ -1,4 +1,5 @@
-const a = () => 1;
+// unused export
+export const a = () => 1;
 
 // magic number
 a(5);

example-files/ts-file.ts

@@ -1,5 +1,5 @@
-// missing return type
-const a = (b: number) => b + 1;
+// missing return type, BUT this export is used in tsx-file
+export const a = (b: number) => b + 1;
 
 // magic number
 a(5);

example-files/tsx-file.tsx

@@ -1,11 +1,15 @@
+import {a} from './ts-file';
+
 // missing return type
-const a = (b: number) => b + 1;
+const c = (b: number) => b + 1;
 
 // magic number
-a(5);
+c(5);
+
+a(0);
 
-// unused, missing return type
-const Component = () => (
+// missing return type, unused export
+export const Component = () => (
    <>
       <div>
          Hello world!

index.d.ts

@@ -1,3 +1,3 @@
 import eslint from 'eslint';
 
-export default function(ignores: string[], globals: Record<string, false>): eslint.Linter.Config[];
+export default function(ignores: string[], globals: Record<string, false>, srcForCheckingUnusedFiles?: string[]): eslint.Linter.Config[];

index.js

@@ -6,8 +6,9 @@ const reactHooksPlugin = require('eslint-plugin-react-hooks');
 const preferArrowPlugin = require('eslint-plugin-prefer-arrow');
 const tsEslint = require('typescript-eslint');
 const stylisticPlugin = require('@stylistic/eslint-plugin');
+const importPlugin = require('eslint-plugin-import-x');
 
-module.exports = (ignores, globals) => [
+module.exports = (ignores, globals, srcForCheckingUnusedFiles) => [
    {
       name: 'global ignores',
       ignores: ignores
@@ -30,7 +31,25 @@ module.exports = (ignores, globals) => [
    }, {
       name: 'base js rules',
       files: ['**/*.?(m|c)@(j|t)s?(x)'],
-      rules: commonRules
+      plugins: {'import-x': importPlugin},
+      rules: {
+         ...commonRules,
+         ...(srcForCheckingUnusedFiles
+            ? {'import-x/no-unused-modules': ['error', {unusedExports: true, src: srcForCheckingUnusedFiles}]}
+            : {}
+         )
+      },
+      settings: {
+         'import-x/extensions': ['.js', '.jsx', '.ts', '.tsx'],
+         'import-x/parsers': {
+            '@typescript-eslint/parser': ['.ts', '.tsx']
+         },
+         'import-x/resolver': {
+            typescript: {
+               alwaysTryTypes: true
+            }
+         }
+      }
    }, {
       name: 'react rules',
       files: ['**/*.?(m|c)jsx', '**/*.?(m|c)tsx'],