[CONFIG] ESlint old .eslintrc migrated to eslint.config.mjs flat configuration files

https://eslint.org/docs/latest/use/configure/migration-guide

Author: Gonzalo Diaz

.eslintignore

@@ -54,18 +54,20 @@ jobs:
         run: |
           npm install --include=dev [email protected]
           npm install --include=dev @microsoft/[email protected]
+
       - name: Test ESLint
         run: |
           npx --yes eslint --env-info
+
       - name: Run ESLint
         run: >
           npx eslint .
-          --config .eslintrc
+          --color
           --max-warnings=0
-          --ext .js,.jsx,.ts,.tsx
           --format @microsoft/eslint-formatter-sarif
           --output-file eslint-results.sarif
         continue-on-error: true
+
       - name: Upload analysis results to GitHub
         uses: github/codeql-action/upload-sarif@v3
         with:

.eslintrc

@@ -39,8 +39,7 @@ COPY ./Makefile ${WORKDIR}/
 # code linting conf
 COPY ./.prettierrc ${WORKDIR}/
 COPY ./.prettierignore ${WORKDIR}/
-COPY ./.eslintrc ${WORKDIR}/
-COPY ./.eslintignore ${WORKDIR}/
+COPY ./eslint.config.js ${WORKDIR}/
 COPY ./.babelrc ${WORKDIR}/
 
 # markdownlint conf

.github/workflows/eslint.yml

@@ -0,0 +1,104 @@
+import { fixupConfigRules, fixupPluginRules } from '@eslint/compat';
+import _import from 'eslint-plugin-import';
+import jest from 'eslint-plugin-jest';
+import prettier from 'eslint-plugin-prettier';
+import globals from 'globals';
+import babelParser from '@babel/eslint-parser';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import js from '@eslint/js';
+import { FlatCompat } from '@eslint/eslintrc';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all
+});
+
+export default [
+  js.configs.recommended,
+  {
+    ignores: ['**/coverage', '**/dist', '**/node_modules', 'eslint.config.js']
+  },
+  ...fixupConfigRules(
+    compat.extends(
+      'eslint:recommended',
+      'airbnb-base',
+      'prettier',
+      // 'plugin:import/errors',
+      // 'plugin:import/warnings',
+      'plugin:jest/all'
+    )
+  ),
+  {
+    plugins: {
+      import: fixupPluginRules(_import),
+      jest: fixupPluginRules(jest),
+      prettier
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...jest.environments.globals.globals
+      },
+
+      parser: babelParser,
+      ecmaVersion: 2022,
+      sourceType: 'module',
+
+      parserOptions: {
+        requireConfigFile: false,
+
+        babelOptions: {
+          parserOpts: {
+            plugins: ['importAssertions']
+          }
+        }
+      }
+    },
+
+    rules: {
+      'prettier/prettier': ['error'],
+      'no-restricted-syntax': 0,
+      'no-console': 'off',
+      'no-underscore-dangle': 0,
+
+      'no-plusplus': [
+        'error',
+        {
+          allowForLoopAfterthoughts: true
+        }
+      ],
+
+      'import/no-unresolved': [
+        2,
+        {
+          commonjs: true,
+          amd: true
+        }
+      ],
+
+      'import/extensions': [
+        'error',
+        {
+          js: 'always',
+          json: 'always'
+        }
+      ],
+
+      'import/no-extraneous-dependencies': [
+        'error',
+        {
+          devDependencies: [
+            '**/*.test.js',
+            '**/*.bruteforce-test.js',
+            '**/*.spec.js'
+          ]
+        }
+      ]
+    }
+  }
+];