.eslintrc.js

module.exports = {
  root: true,
  globals: {
    JSX: true,
    React: true,
    ChildNode: true,
    ReactElement: true,
    globalThis: true,
    Locale: true,
    SendBird: true,
  },
  env: {
    browser: true,
    es6: true,
    jest: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: 'module',
    ecmaFeatures: {
      jsx: true,
    },
  },
  settings: {
    react: {
      version: 'detect',
    },
    'import/resolver': {
      node: {
        extensions: ['.js', '.jsx', '.ts', '.tsx', '.d.ts'],
      },
    },
  },
  rules: {
    'no-unused-expressions': 'off',
    'no-await-in-loop': 'off',
    // Not to make ESLint complains a type is only being used as type but recognized as a unused variable
    // https://stackoverflow.com/questions/57802057/eslint-configuring-no-unused-vars-for-typescript
    'no-unused-vars': 'off', // or '@typescript-eslint/no-unused-vars': 'off',
    'unused-imports/no-unused-imports': 'error',
    'unused-imports/no-unused-vars': [
      'warn',
      {
        vars: 'all',
        varsIgnorePattern: '^_',
        args: 'after-used',
        argsIgnorePattern: '^_',
      },
    ],
    '@typescript-eslint/ban-ts-comment': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-unused-expressions': 'error',
    'react/display-name': 'off',
    'react/function-component-definition': 'off',
    'react/prop-types': 'off',
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        js: 'never',
        jsx: 'never',
        ts: 'never',
        tsx: 'never',
      },
    ],
    // TODO(Ahyoung): fix and remove one by one
    'no-shadow': 'off',
    'no-else-return': 'off',
    'no-param-reassign': 'off',
    'no-useless-escape': 'off',
    'no-underscore-dangle': 'off',
    'no-confusing-arrow': 'off',
    'no-mixed-operators': 'off',
    'no-nested-ternary': 'off',
    'no-unneeded-ternary': 'off',
    'no-use-before-define': 'off',
    'no-cond-assign': 'off',
    'no-plusplus': 'off',
    'no-bitwise': 'off',
    'no-restricted-syntax': 'off',
    'no-prototype-builtins': 'off',
    'import/no-unresolved': 'off',
    'import/no-extraneous-dependencies': 'off',
    'import/no-useless-path-segments': 'off',
    'import/prefer-default-export': 'off',
    'import/order': 'off',
    'import/no-named-as-default-member': 'off',
    'object-curly-newline': 'off',
    'object-shorthand': 'off',
    'consistent-return': 'off',
    'max-len': 'off',
    'arrow-body-style': 'off',
    'function-paren-newline': 'off',
    'prefer-template': 'off',
    'padded-blocks': 'off',
    'arrow-parens': 'off',
    'dot-notation': 'off',
    camelcase: 'off',
    radix: 'off',
    'prefer-destructuring': 'off',
    'default-case': 'off',
    curly: 'off',
    yoda: 'off',
    'brace-style': 'off',
    'nonblock-statement-body-position': 'off',
    'func-names': 'off',
    // In some cases, eslint requires semicolon and wants it removed at the same time
    // https://stackoverflow.com/questions/58474874/eslint-demands-semicolon-and-wants-it-removed-at-the-same-time
    semi: 'off',
    '@typescript-eslint/semi': ['error'],
    'object-curly-spacing': ['error', 'always'],
    quotes: ['error', 'single'],
  },
  extends: ['plugin:react/recommended', 'plugin:@typescript-eslint/recommended', 'airbnb-base'],
  plugins: ['react', '@typescript-eslint', 'unused-imports'],
  ignorePatterns: ['node_modules', 'ui/QuoteMessageInput/mockMessage.ts'],
};