tree-hugger-js
Version:
A friendly tree-sitter wrapper for JavaScript and TypeScript
110 lines (106 loc) • 3.65 kB
JavaScript
module.exports = {
parser: '@typescript-eslint/parser',
parserOptions: {
ecmaVersion: 2020,
sourceType: 'module',
project: './tsconfig.eslint.json',
},
plugins: ['@typescript-eslint', 'jest', 'prettier'],
extends: [
'eslint:recommended',
'plugin:@typescript-eslint/recommended',
'plugin:@typescript-eslint/recommended-requiring-type-checking',
'plugin:jest/recommended',
'plugin:prettier/recommended',
'prettier',
],
env: {
node: true,
jest: true,
es6: true,
},
rules: {
// TypeScript specific rules
'@typescript-eslint/no-explicit-any': 'warn',
'@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
'@typescript-eslint/explicit-function-return-type': 'off',
'@typescript-eslint/explicit-module-boundary-types': 'off',
'@typescript-eslint/no-non-null-assertion': 'warn',
'@typescript-eslint/prefer-optional-chain': 'error',
'@typescript-eslint/prefer-nullish-coalescing': 'error',
// Relax some rules that are problematic with tree-sitter and our use case
'@typescript-eslint/no-require-imports': 'off', // tree-sitter modules use CommonJS
'@typescript-eslint/no-unsafe-assignment': 'off', // tree-sitter uses any types
'@typescript-eslint/no-unsafe-member-access': 'off', // tree-sitter uses any types
'@typescript-eslint/no-unsafe-call': 'off', // tree-sitter uses any types
'@typescript-eslint/no-unsafe-return': 'off', // tree-sitter uses any types
// General ESLint rules
'no-console': 'warn',
'no-debugger': 'error',
'no-unused-vars': 'off', // Turned off in favor of @typescript-eslint version
'prefer-const': 'error',
'no-var': 'error',
'no-case-declarations': 'off', // Allow lexical declarations in case blocks
// Jest specific rules
'jest/expect-expect': 'error',
'jest/no-disabled-tests': 'warn',
'jest/no-focused-tests': 'error',
'jest/no-identical-title': 'error',
'jest/prefer-to-have-length': 'warn',
'jest/valid-expect': 'error',
'jest/no-conditional-expect': 'off', // We have valid conditional expects in tests
'jest/expect-expect': ['error', { 'assertFunctionNames': ['expect*'] }], // Allow expectPattern, expectTransform etc.
// Prettier
'prettier/prettier': 'error',
},
overrides: [
{
// More lenient rules for test files
files: ['**/*.test.ts', '**/*.test.js', '**/tests/**/*'],
rules: {
'@typescript-eslint/no-explicit-any': 'off',
'@typescript-eslint/no-non-null-assertion': 'off',
'no-console': 'off',
},
},
{
// More lenient rules for debug files
files: ['debug-*.js', '**/*.debug.js'],
rules: {
'@typescript-eslint/no-var-requires': 'off',
'no-console': 'off',
},
},
{
// Ignore JS fixture files used for testing
files: ['**/fixtures/**/*.js'],
extends: ['eslint:recommended'],
parser: 'espree',
parserOptions: {
ecmaVersion: 2020,
sourceType: 'module',
},
rules: {
'no-console': 'off',
},
},
{
// Special handling for tree-sitter-stable.js helper file
files: ['**/helpers/tree-sitter-stable.js'],
extends: ['eslint:recommended'],
parser: 'espree',
parserOptions: {
ecmaVersion: 2020,
sourceType: 'script',
},
env: {
node: true,
},
rules: {
'no-console': 'off',
'@typescript-eslint/prefer-optional-chain': 'off',
'@typescript-eslint/prefer-nullish-coalescing': 'off',
},
},
],
};