refactor: migrate ESLint configuration to eslint.config.mjs and remove legacy files

Author: MishaKav

.eslintignore

@@ -0,0 +1,131 @@
+import eslint from '@eslint/js'
+import tseslint from '@typescript-eslint/eslint-plugin'
+import tsparser from '@typescript-eslint/parser'
+import jestPlugin from 'eslint-plugin-jest'
+import githubPlugin from 'eslint-plugin-github'
+import prettierPlugin from 'eslint-plugin-prettier'
+import importPlugin from 'eslint-plugin-import'
+
+export default [
+  // Global ignores
+  {
+    ignores: ['**/node_modules/**', '**/dist/**', '**/coverage/**', '**/*.json']
+  },
+
+  // Base configuration for all files
+  eslint.configs.recommended,
+
+  // TypeScript files configuration
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parser: tsparser,
+      parserOptions: {
+        ecmaVersion: 2023,
+        sourceType: 'module',
+        project: ['./.github/linters/tsconfig.json', './tsconfig.json']
+      },
+      globals: {
+        Atomics: 'readonly',
+        SharedArrayBuffer: 'readonly',
+        console: 'readonly',
+        process: 'readonly',
+        __dirname: 'readonly',
+        __filename: 'readonly',
+        module: 'readonly',
+        require: 'readonly',
+        exports: 'readonly',
+        Buffer: 'readonly',
+        global: 'readonly'
+      }
+    },
+    plugins: {
+      '@typescript-eslint': tseslint,
+      jest: jestPlugin,
+      github: githubPlugin,
+      prettier: prettierPlugin
+    },
+    rules: {
+      // Spread recommended rules from plugins
+      ...tseslint.configs['eslint-recommended'].overrides[0].rules,
+      ...tseslint.configs.recommended.rules,
+      ...jestPlugin.configs.recommended.rules,
+
+      // Custom rules
+      camelcase: 'off',
+      'no-console': 'off',
+      'no-unused-vars': 'off',
+      'prettier/prettier': 'error',
+      semi: ['error', 'never'],
+      '@typescript-eslint/array-type': 'error',
+      '@typescript-eslint/await-thenable': 'error',
+      '@typescript-eslint/ban-ts-comment': 'error',
+      '@typescript-eslint/consistent-type-assertions': 'error',
+      '@typescript-eslint/explicit-member-accessibility': [
+        'error',
+        { accessibility: 'no-public' }
+      ],
+      '@typescript-eslint/explicit-function-return-type': [
+        'error',
+        { allowExpressions: true }
+      ],
+      'func-call-spacing': ['error', 'never'],
+      '@typescript-eslint/no-array-constructor': 'error',
+      '@typescript-eslint/no-empty-interface': 'error',
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-extraneous-class': 'error',
+      '@typescript-eslint/no-for-in-array': 'error',
+      '@typescript-eslint/no-inferrable-types': 'error',
+      '@typescript-eslint/no-misused-new': 'error',
+      '@typescript-eslint/no-namespace': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'warn',
+      '@typescript-eslint/no-require-imports': 'error',
+      '@typescript-eslint/no-unnecessary-qualifier': 'error',
+      '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+      '@typescript-eslint/no-unused-vars': 'error',
+      '@typescript-eslint/no-useless-constructor': 'error',
+      '@typescript-eslint/no-var-requires': 'error',
+      '@typescript-eslint/prefer-for-of': 'warn',
+      '@typescript-eslint/prefer-function-type': 'warn',
+      '@typescript-eslint/prefer-includes': 'error',
+      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
+      '@typescript-eslint/promise-function-async': 'error',
+      '@typescript-eslint/require-array-sort-compare': 'error',
+      '@typescript-eslint/restrict-plus-operands': 'error',
+      '@typescript-eslint/space-before-function-paren': 'off',
+      '@typescript-eslint/unbound-method': 'error'
+    }
+  },
+
+  // JavaScript files configuration
+  {
+    files: ['**/*.js'],
+    languageOptions: {
+      ecmaVersion: 2023,
+      sourceType: 'module',
+      globals: {
+        Atomics: 'readonly',
+        SharedArrayBuffer: 'readonly',
+        console: 'readonly',
+        process: 'readonly',
+        __dirname: 'readonly',
+        __filename: 'readonly',
+        module: 'readonly',
+        require: 'readonly',
+        exports: 'readonly',
+        Buffer: 'readonly',
+        global: 'readonly'
+      }
+    },
+    plugins: {
+      prettier: prettierPlugin,
+      import: importPlugin
+    },
+    rules: {
+      'no-console': 'off',
+      'prettier/prettier': 'error',
+      semi: ['error', 'never'],
+      'import/no-commonjs': 'off'
+    }
+  }
+]