.eslintrc.js

// @ts-check
const { defineConfig } = require('./src');
const { readGitignoreFiles } = require('eslint-gitignore');

module.exports = defineConfig({
  ignorePatterns: [
    ...readGitignoreFiles(),
    'src/index.js',
    '.eslintrc.js', // Skip self linting
  ],
  root: true,
  env: {
    es6: true,
    node: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended-requiring-type-checking',
    'plugin:prettier/recommended',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: ['./tsconfig.json'],
    warnOnUnsupportedTypeScriptVersion: false,
  },
  plugins: ['@typescript-eslint', 'prettier'],
  rules: {
    curly: ['error'],
    'linebreak-style': ['error', 'unix'],
    'no-case-declarations': 'warn',
    quotes: ['error', 'single', { avoidEscape: true }],
    semi: ['error', 'always'],

    '@typescript-eslint/ban-ts-comment': 'off',
    '@typescript-eslint/explicit-function-return-type': [
      'error',
      { allowExpressions: true },
    ],
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/member-ordering': 'off',
    '@typescript-eslint/consistent-type-imports': [
      'error',
      { prefer: 'type-imports' },
    ],
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-inferrable-types': 'off',
    '@typescript-eslint/no-non-null-assertion': 'off',
    '@typescript-eslint/no-parameter-properties': 'off',
    '@typescript-eslint/no-unsafe-assignment': 'off',
    '@typescript-eslint/no-unused-vars': 'off',
    '@typescript-eslint/prefer-nullish-coalescing': 'warn',
    '@typescript-eslint/prefer-optional-chain': 'warn',
    '@typescript-eslint/prefer-readonly': ['warn'],
    '@typescript-eslint/restrict-template-expressions': 'off',
    '@typescript-eslint/typedef': [
      'warn',
      { memberVariableDeclaration: true, variableDeclaration: true },
    ],
  },
});