eslint.config.mjs

import globals from 'globals'
import js from '@eslint/js'

export default [
  // Recommended rules
  js.configs.recommended,

  {
    languageOptions: {
      globals: {
        ...globals.node,

        // global tree-sitter functions
        alias: 'readonly',
        choice: 'readonly',
        field: 'readonly',
        grammar: 'readonly',
        optional: 'readonly',
        prec: 'readonly',
        repeat: 'readonly',
        repeat1: 'readonly',
        seq: 'readonly',
        token: 'readonly',
      },

      ecmaVersion: 'latest',
      sourceType: 'module',
    },

    rules: {
      'array-bracket-spacing': ['error'],
      'arrow-spacing': ['error'],
      'block-spacing': ['error'],
      'comma-dangle': ['error', 'always-multiline'],
      'comma-style': ['error', 'last', { exceptions: { 'CallExpression': false } }],
      'comma-spacing': ['error'],
      'func-call-spacing': ['error'],
      'function-call-argument-newline': ['error', 'consistent'],
      'implicit-arrow-linebreak': ['error'],
      indent: ['error', 2],
      'linebreak-style': ['error', 'unix'],

      'max-len': ['warn', {
        code: 100,
        ignoreUrls: true,
      }],

      'object-curly-spacing': ['error', 'always'],

      'object-property-newline': ['error', {
        allowAllPropertiesOnSameLine: true,
      }],

      'no-multi-spaces': ['error'],
      'no-multiple-empty-lines': ['error'],
      'no-trailing-spaces': ['error'],
      'padded-blocks': ['error', 'never'],
      quotes: ['error', 'single'],

      'no-unused-vars': ['error', {
        argsIgnorePattern: '$',
      }],

      'rest-spread-spacing': ['error', 'never'],
      semi: ['error', 'never'],
      'space-before-blocks': ['error'],
      'space-in-parens': ['error'],
    },
  }]