chore: use eslint v9

Author: kukhariev

.eslintignore

@@ -0,0 +1,195 @@
+import js from '@eslint/js';
+import tsParser from '@typescript-eslint/parser';
+import tsPlugin from '@typescript-eslint/eslint-plugin';
+import prettierPlugin from 'eslint-plugin-prettier';
+import prettierConfig from 'eslint-config-prettier';
+import jestPlugin from 'eslint-plugin-jest';
+import jestFormattingPlugin from 'eslint-plugin-jest-formatting';
+import globals from 'globals';
+import { dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+
+export default [
+  // Base JavaScript configuration
+  js.configs.recommended,
+
+  // TypeScript files only
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      ecmaVersion: 2022,
+      globals: {
+        ...globals.node,
+        ...Object.fromEntries(Object.entries(globals.browser).map(([key]) => [key, 'off']))
+      },
+      parserOptions: {
+        tsconfigRootDir: dirname(fileURLToPath(import.meta.url)),
+        project: ['tsconfig.json', 'packages/tsconfig.json', 'examples/tsconfig.json'],
+        warnOnUnsupportedTypeScriptVersion: false,
+        EXPERIMENTAL_useSourceOfProjectReferenceRedirect: true
+      }
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+      prettier: prettierPlugin
+    },
+    rules: {
+      ...tsPlugin.configs.recommended.rules,
+      ...tsPlugin.configs['recommended-requiring-type-checking'].rules,
+      ...prettierConfig.rules,
+
+      // Prettier
+      'prettier/prettier': 'warn',
+
+      // TypeScript specific rules
+      '@typescript-eslint/no-unsafe-declaration-merging': 'off',
+      '@typescript-eslint/no-redundant-type-constituents': 'off',
+      '@typescript-eslint/adjacent-overload-signatures': 'error',
+      '@typescript-eslint/await-thenable': 'error',
+      '@typescript-eslint/prefer-promise-reject-errors': 'off',
+      '@typescript-eslint/explicit-function-return-type': [
+        'warn',
+        {
+          allowExpressions: true,
+          allowTypedFunctionExpressions: true
+        }
+      ],
+      '@typescript-eslint/explicit-member-accessibility': 'off',
+      '@typescript-eslint/interface-name-prefix': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-parameter-properties': 'off',
+      '@typescript-eslint/no-shadow': 'error',
+      '@typescript-eslint/no-this-alias': 'error',
+      '@typescript-eslint/no-unused-expressions': 'off',
+      '@typescript-eslint/no-require-imports': 'off',
+      '@typescript-eslint/no-unused-vars': ['error', { args: 'none' }],
+      '@typescript-eslint/prefer-function-type': 'error',
+      '@typescript-eslint/prefer-namespace-keyword': 'error',
+      '@typescript-eslint/promise-function-async': 'off',
+      '@typescript-eslint/member-ordering': 'warn',
+      '@typescript-eslint/require-await': 'off',
+      '@typescript-eslint/no-var-requires': 'off',
+      '@typescript-eslint/naming-convention': [
+        'error',
+        {
+          selector: 'typeParameter',
+          format: ['PascalCase']
+        }
+      ],
+
+      // General rules
+      'no-redeclare': 'off',
+      'no-empty': 'off',
+      'no-irregular-whitespace': 'error',
+      'no-return-assign': 'error',
+      'no-return-await': 'error',
+      'no-throw-literal': 'error',
+      'no-undef': 'off',
+      'no-useless-call': 'error',
+      'no-useless-concat': 'error',
+      'no-var': 'error',
+      'prefer-const': 'error',
+      'prefer-object-spread': 'error',
+      'lines-between-class-members': ['error', 'always', { exceptAfterSingleLine: true }],
+      'prefer-template': 'error',
+      'prefer-arrow-callback': 'warn',
+      'linebreak-style': ['error', 'unix'],
+      quotes: ['error', 'single'],
+      'no-console': 'error'
+    }
+  },
+
+  // JavaScript files
+  {
+    files: ['**/*.js'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      globals: {
+        ...globals.node
+      }
+    },
+    plugins: {
+      prettier: prettierPlugin
+    },
+    rules: {
+      ...prettierConfig.rules,
+      'prettier/prettier': 'warn',
+      'no-empty': 'off',
+      'no-irregular-whitespace': 'error',
+      'no-return-assign': 'error',
+      'no-return-await': 'error',
+      'no-throw-literal': 'error',
+      'no-useless-call': 'error',
+      'no-useless-concat': 'error',
+      'no-var': 'error',
+      'prefer-const': 'error',
+      'prefer-object-spread': 'error',
+      'lines-between-class-members': ['error', 'always', { exceptAfterSingleLine: true }],
+      'prefer-template': 'error',
+      'prefer-arrow-callback': 'warn',
+      'linebreak-style': ['error', 'unix'],
+      quotes: ['error', 'single'],
+      'no-console': 'error'
+    }
+  },
+
+  // Test files configuration
+  {
+    files: ['test/**/*.{ts,js}'],
+    languageOptions: {
+      globals: {
+        ...globals.jest
+      }
+    },
+    plugins: {
+      jest: jestPlugin,
+      'jest-formatting': jestFormattingPlugin
+    },
+    rules: {
+      ...jestPlugin.configs.recommended.rules,
+      ...jestPlugin.configs.style.rules,
+      ...jestFormattingPlugin.configs.recommended.rules,
+
+      '@typescript-eslint/unbound-method': 'off',
+      'jest/expect-expect': [
+        'error',
+        {
+          assertFunctionNames: ['expect', 'request.**.expect']
+        }
+      ]
+    }
+  },
+
+  // Examples configuration
+  {
+    files: ['examples/**/*.{ts,js}'],
+    rules: {
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      'no-console': 'off'
+    }
+  },
+
+  // Global ignores
+  {
+    ignores: [
+      '**/dist/',
+      '**/scripts/',
+      '**/lib/',
+      '**/upload/',
+      '**/uploads/',
+      '**/files/',
+      '**/tmp/',
+      '**/temp/',
+      '**/node_modules/',
+      '**/*.example',
+      '**/*.json',
+      '**/coverage/',
+      '**/*.snap',
+      '**/*.config.js',
+      '**/*.config.cjs',
+      '**/*.config.mjs'
+    ]
+  }
+];