Migrate Eslint configuration to flat config

eslint.config.js

@@ -0,0 +1,43 @@
+const tseslint = require('typescript-eslint');
+const js = require('@eslint/js');
+const globals = require('globals');
+
+module.exports = [
+    {
+        languageOptions: {
+            globals: {
+                Atomics: 'readonly',
+                SharedArrayBuffer: 'readonly',
+                ...globals.browser,
+                ...globals.node,
+                ...globals.es2020
+            }
+        }
+    },
+    js.configs.recommended,
+    ...tseslint.configs.recommended,
+    {
+        rules: {
+            quotes: [
+                'error',
+                'single',
+                {
+                    avoidEscape: true,
+                    allowTemplateLiterals: true
+                }
+            ],
+            indent: ['error', 4],
+            semi: ['error', 'always'],
+            'no-trailing-spaces': [2, { skipBlankLines: true }],
+            '@typescript-eslint/no-var-requires': 'off',
+            '@typescript-eslint/ban-ts-ignore': 'off',
+            '@typescript-eslint/ban-ts-comment': 'off'
+        }
+    },
+    {
+        files: ['*.js'],
+        rules: {
+            '@typescript-eslint/explicit-function-return-type': 'off'
+        }
+    }
+];

package.json

@@ -75,10 +75,9 @@
     "@types/jest-specific-snapshot": "^0.5.9",
     "@types/node": "^20.12.7",
     "@types/rtlcss": "^3.5.4",
-    "@typescript-eslint/eslint-plugin": "^7.6.0",
-    "@typescript-eslint/parser": "^7.6.0",
     "eslint": "^9.0.0",
     "eslint-plugin-jest": "^28.2.0",
+    "globals": "^15.0.0",
     "jest": "^29.7.0",
     "jest-specific-snapshot": "^8.0.0",
     "postcss": "^8.4.26",
@@ -88,7 +87,8 @@
     "rollup-plugin-ts": "^3.4.5",
     "ts-jest": "^29.1.2",
     "tslib": "^2.6.2",
-    "typescript": "^5.4.5"
+    "typescript": "^5.4.5",
+    "typescript-eslint": "^7.6.0"
   },
   "peerDependencies": {
     "postcss": "^8.4.21"