eslint.config.js•6.6 kB
import js from '@eslint/js';
import tseslint from '@typescript-eslint/eslint-plugin';
import tsparser from '@typescript-eslint/parser';
export default [
js.configs.recommended,
{
files: ['src/**/*.ts'],
languageOptions: {
parser: tsparser,
parserOptions: {
ecmaVersion: 2020,
sourceType: 'module',
project: './tsconfig.json'
},
globals: {
process: 'readonly',
console: 'readonly',
setInterval: 'readonly',
setTimeout: 'readonly',
clearInterval: 'readonly',
clearTimeout: 'readonly',
URL: 'readonly',
Buffer: 'readonly'
}
},
plugins: {
'@typescript-eslint': tseslint
},
rules: {
// TypeScript-specific type safety rules
'@typescript-eslint/no-unused-vars': ['warn', {
argsIgnorePattern: '^_|node|context|items',
varsIgnorePattern: '^_|node|context|items',
caughtErrorsIgnorePattern: '^_'
}],
'@typescript-eslint/explicit-function-return-type': 'off', // TypeScript infers types well
'@typescript-eslint/no-explicit-any': 'off',
'@typescript-eslint/no-unsafe-assignment': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-call': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-member-access': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-return': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-argument': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/strict-boolean-expressions': 'off', // Too strict for existing patterns
'@typescript-eslint/prefer-nullish-coalescing': 'off', // Many patterns use || for backward compatibility
'@typescript-eslint/prefer-optional-chain': 'off', // Existing code patterns work fine
'@typescript-eslint/no-non-null-assertion': 'off', // Used appropriately in validation code
'@typescript-eslint/no-floating-promises': 'error',
'@typescript-eslint/await-thenable': 'error',
'@typescript-eslint/require-await': 'off', // Many async functions are prepared for future async operations
'@typescript-eslint/no-unnecessary-type-assertion': 'warn',
'@typescript-eslint/prefer-as-const': 'error',
'@typescript-eslint/no-misused-promises': 'error',
'@typescript-eslint/promise-function-async': 'warn',
'@typescript-eslint/switch-exhaustiveness-check': 'error',
'@typescript-eslint/consistent-type-definitions': ['warn', 'interface'],
'@typescript-eslint/consistent-type-imports': ['warn', { prefer: 'type-imports' }],
'@typescript-eslint/no-import-type-side-effects': 'warn',
'@typescript-eslint/array-type': ['warn', { default: 'array-simple' }],
'@typescript-eslint/consistent-indexed-object-style': ['warn', 'record'],
'@typescript-eslint/method-signature-style': ['warn', 'property'],
// Enhanced null/undefined checking
'@typescript-eslint/no-unnecessary-condition': 'off', // Conflicts with defensive coding
'@typescript-eslint/prefer-includes': 'error',
'@typescript-eslint/prefer-string-starts-ends-with': 'error',
// Function and parameter rules
'@typescript-eslint/explicit-member-accessibility': 'off', // Too strict for existing code
'@typescript-eslint/parameter-properties': 'off',
'@typescript-eslint/no-parameter-properties': 'off',
// General JavaScript best practices
'prefer-const': 'error',
'no-var': 'error',
'no-console': 'warn',
'eqeqeq': 'error',
'curly': 'error',
'no-throw-literal': 'error',
'no-return-await': 'error',
'prefer-template': 'error',
'prefer-object-spread': 'error',
'prefer-destructuring': ['error', { object: true, array: false }],
'object-shorthand': 'error',
'no-duplicate-imports': 'error',
'no-unused-vars': 'off', // Use TypeScript version instead
'no-useless-return': 'error',
'no-else-return': 'error',
'no-lonely-if': 'error',
'no-unneeded-ternary': 'error',
'yoda': 'error',
// Error handling
'no-empty': 'error',
// Security and safety
'no-eval': 'error',
'no-implied-eval': 'error',
'no-new-func': 'error',
'no-script-url': 'error',
'no-caller': 'error',
'no-proto': 'error',
'no-extend-native': 'error',
// Performance
'no-loop-func': 'error'
}
},
{
files: ['tests/**/*.ts', '**/*.test.ts', '**/*.spec.ts'],
languageOptions: {
parser: tsparser,
parserOptions: {
ecmaVersion: 2020,
sourceType: 'module',
project: './tsconfig.test.json'
},
globals: {
jest: 'readonly',
expect: 'readonly',
describe: 'readonly',
it: 'readonly',
beforeEach: 'readonly',
afterEach: 'readonly',
beforeAll: 'readonly',
afterAll: 'readonly',
process: 'readonly',
console: 'readonly'
}
},
plugins: {
'@typescript-eslint': tseslint
},
rules: {
// Relaxed rules for test files
'@typescript-eslint/no-unused-vars': ['error', {
argsIgnorePattern: '^_',
varsIgnorePattern: '^_|^mock',
caughtErrorsIgnorePattern: '^_'
}],
'@typescript-eslint/explicit-function-return-type': 'off',
'@typescript-eslint/no-explicit-any': 'off',
'@typescript-eslint/no-unsafe-assignment': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-call': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-member-access': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-return': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/no-unsafe-argument': 'off', // Too many warnings for existing API patterns
'@typescript-eslint/strict-boolean-expressions': 'off',
'@typescript-eslint/no-non-null-assertion': 'off', // Used appropriately in validation code
'@typescript-eslint/no-floating-promises': 'error',
'@typescript-eslint/explicit-member-accessibility': 'off',
'no-console': 'off', // Allow console.log in tests
'prefer-const': 'error',
'no-var': 'error'
}
},
{
ignores: ['dist/', 'node_modules/', '*.js', '!eslint.config.js', 'coverage/']
}
];