.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    jest: true,
    node: true, // 'module' is not defined. 에러가 발생하면 기입
  },
  extends: ['eslint:recommended', 'prettier'],
  plugins: ['prettier'],
  parserOptions: {
    parser: 'babel-eslint',
    ecmaVersion: 12,
    sourceType: 'module',
  },
  rules: {
    'prettier/prettier': [
      'error',
      {
        singleQuote: true,
        semi: true,
        useTabs: false,
        tabWidth: 2,
        trailingComma: 'all',
        printWidth: 80,
        bracketSpacing: true,
        arrowParens: 'avoid',
        endOfLine: 'auto',
      },
    ],
  },
  overrides: [
    {
      files: [
        '**/__tests__/*.{j,t}s?(x)',
        '**/tests/unit/**/*.spec.{j,t}s?(x)',
      ],
      env: {
        jest: true,
      },
    },
  ],
};