.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2020: true,
  },
  extends: ['@llc1123/eslint-config/prettier', '@llc1123'],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: true,
  },
  rules: {
    '@typescript-eslint/ban-ts-comment': [
      'error',
      {
        'ts-ignore': 'allow-with-description',
      },
    ],
    '@typescript-eslint/consistent-type-assertions': [
      'error',
      {
        assertionStyle: 'as',
        objectLiteralTypeAssertions: 'allow-as-parameter',
      },
    ],
    '@typescript-eslint/consistent-type-definitions': ['warn', 'type'],
    '@typescript-eslint/no-confusing-void-expression': 'off',
    '@typescript-eslint/no-empty-function': 'error',
    '@typescript-eslint/no-explicit-any': [
      'error',
      {
        fixToUnknown: true,
      },
    ],
    '@typescript-eslint/no-unnecessary-condition': 'warn',
    // use [, , , ...rest] for arrays,
    // as [a, b, c, ...rest] will be warned
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        caughtErrors: 'all',
        ignoreRestSiblings: true,
      },
    ],
    '@typescript-eslint/prefer-nullish-coalescing': 'error',
    '@typescript-eslint/prefer-optional-chain': 'error',
    '@typescript-eslint/restrict-template-expressions': [
      'error',
      {
        allowNumber: true,
      },
    ],
    eqeqeq: 'error',
    'func-style': ['warn', 'expression'],
    'import/newline-after-import': 'error',
    'import/no-duplicates': 'error',
    'import/order': [
      'warn',
      {
        'newlines-between': 'always',
        pathGroups: [
          {
            group: 'builtin',
            pattern: '{.,@}/**/*.{css,scss,styl}',
            position: 'before',
          },
          {
            group: 'builtin',
            pattern: '{.,@}/**/polyfills.{js,ts}',
            position: 'before',
          },
        ],
        warnOnUnassignedImports: true,
      },
    ],
    'no-console': 'off',
    'no-constant-condition': 'error',
    'no-debugger': 'error',
    'no-dupe-keys': 'error',
    'no-else-return': 'error',
    'no-return-await': 'error',
    'no-throw-literal': 'off',
    'no-unexpected-multiline': 'error',
    'no-unneeded-ternary': 'error',
    'no-unreachable': 'error',
    'no-unused-expressions': [
      'error',
      {
        allowShortCircuit: true,
        allowTaggedTemplates: true,
        allowTernary: true,
        enforceForJSX: true,
      },
    ],
    'no-useless-backreference': 'error',
    'no-useless-call': 'error',
    'no-useless-catch': 'error',
    'no-useless-computed-key': 'error',
    'no-useless-concat': 'error',
    'no-useless-constructor': 'error',
    'no-useless-rename': 'error',
    'no-useless-return': 'error',
    'no-var': 'error',
    'object-shorthand': 'error',
    'one-var': ['error', 'never'],
    'prefer-arrow-callback': 'error',
    'prefer-const': [
      'error',
      {
        destructuring: 'all',
      },
    ],
    'prefer-destructuring': [
      'error',
      {
        AssignmentExpression: {
          array: false,
          object: false,
        },
        VariableDeclarator: {
          array: false,
          object: true,
        },
      },
    ],
    'prefer-exponentiation-operator': 'error',
    'prefer-numeric-literals': 'error',
    'prefer-object-spread': 'error',
    'prefer-template': 'error',
    'require-await': 'error',
  },
}