Upgrade eslint

ESlint 9 uses a new flat config. The airbnb config is no longer used. Switched to modern `typescript-eslint`

* Remove jest

Author: johanib

eslint.config.mjs

@@ -0,0 +1,38 @@
+import js from '@eslint/js';
+import typescriptEslint from 'typescript-eslint';
+
+export default [
+    {
+        ignores: [
+            'vendor/**',
+            'node_modules/**',
+            'var/**',
+            'public/build/**',
+            '.yarn-cache/**',
+            'build/**',
+            'dist/**',
+        ],
+    },
+    js.configs.recommended,
+    ...typescriptEslint.configs.recommendedTypeChecked,
+    {
+        files: ['**/*.ts', '**/*.tsx'],
+        languageOptions: {
+            parserOptions: {
+                project: './tsconfig.json',
+                tsconfigRootDir: import.meta.dirname,
+            },
+        },
+        rules: {
+            // Customize rules as needed
+            '@typescript-eslint/no-explicit-any': 'warn',
+            '@typescript-eslint/no-unused-vars': 'warn',
+        },
+    },
+    {
+        // Disable type-checking rules for JS files
+        files: ['**/*.js', '**/*.jsx'],
+        ...typescriptEslint.configs.disableTypeChecked,
+    },
+];
+

eslint.json

@@ -3,30 +3,27 @@
     "devDependencies": {
         "@babel/core": "^7.26.9",
         "@babel/preset-env": "^7.26.9",
+        "@eslint/eslintrc": "^3.3.1",
+        "@eslint/js": "^9.39.1",
         "@popperjs/core": "^2.11.8",
         "@symfony/webpack-encore": "^5.3.1",
         "@types/bootstrap": "^5.0.0",
-        "@types/jest": "^27",
         "@types/jquery": "^3.5.32",
-        "@types/node": "^10",
+        "@types/node": "^20.0.0",
         "@typescript-eslint/eslint-plugin": "^8.47.0",
         "@typescript-eslint/parser": "^8.47.0",
         "css-loader": "^7.1.2",
         "eslint": "^9.39.1",
-        "eslint-config-airbnb-base": "^15.0.0",
-        "eslint-config-airbnb-typescript": "^18.0.0",
-        "eslint-plugin-import": "^2.29.0",
         "eslint-webpack-plugin": "^5.0.2",
-        "jest": "^27",
         "less": "^4.4.2",
         "less-loader": "^12.3.0",
         "loader-utils": "^3.3",
         "postcss": ">=8.4.31",
         "sass": "^1.94.1",
         "sass-loader": "^16.0.6",
-        "ts-jest": "^27",
         "ts-loader": "^9",
         "typescript": "^5.9.3",
+        "typescript-eslint": "^8.47.0",
         "webpack": "^5.103.0",
         "webpack-cli": "^6.0.1",
         "webpack-import-glob-loader": "^1.6.3"

jest.config.js

@@ -16,4 +16,10 @@
 import jQuery from 'jquery';
 import 'bootstrap';
 
-(window as any).jQuery = jQuery;
+declare global {
+    interface Window {
+        jQuery: typeof jQuery;
+    }
+}
+
+window.jQuery = jQuery;

package.json

@@ -39,7 +39,6 @@
         "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
 
         "types": [
-            "@types/jest",
             "node"
         ],