javascript-package-template/.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    node: true,
  },
  extends: ['airbnb-base', 'prettier'],
  parserOptions: {
    ecmaVersion: 12,
    sourceType: 'module',
  },
  plugins: ['prettier'],
  rules: {
    'prettier/prettier': 'error',
    'import/extensions': [
      'error',
      {
        js: 'never',
        jsx: 'never',
        ts: 'never',
        tsx: 'never',
        json: 'always',
      },
    ],
    'import/no-unresolved': 'off',
    'no-unused-expressions': [
      'error',
      {
        allowShortCircuit: true,
      },
    ],
    'import/no-extraneous-dependencies': ['error', { devDependencies: true }],
    'no-restricted-syntax': 'off',
  },
};