.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
  },
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint', 'import', 'prefer-arrow', 'unused-imports'],
  parserOptions: {
    project: ['./tsconfig.json'],
    ecmaVersion: 2016,
    sourceType: 'module',
    ecmaFeatures: {
      modules: true,
    },
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier/@typescript-eslint',
    'plugin:import/errors',
    'plugin:import/warnings',
    'plugin:import/typescript',
    // 'plugin:node/recommended',
  ],
  rules: {
    '@typescript-eslint/adjacent-overload-signatures': 'error',
    '@typescript-eslint/array-type': ['error', { default: 'generic' }],
    '@typescript-eslint/ban-types': 'error',
    '@typescript-eslint/naming-convention': [
      'error',
      { selector: 'default', format: ['camelCase'] },
      {
        selector: 'variable',
        format: ['camelCase'],
      },
      {
        selector: 'variable',
        modifiers: ['const'],
        format: ['camelCase', 'UPPER_CASE'],
      },
      {
        selector: 'property',
        format: ['camelCase', 'PascalCase'],
      },
      {
        selector: 'enum',
        format: ['PascalCase', 'UPPER_CASE'],
      },
      {
        selector: 'enumMember',
        format: ['PascalCase', 'UPPER_CASE'],
      },
      {
        selector: 'parameter',
        format: ['camelCase'],
        leadingUnderscore: 'allow',
      },
      {
        selector: 'typeLike',
        format: ['PascalCase'],
      },
    ],
    '@typescript-eslint/consistent-type-assertions': 'error',
    '@typescript-eslint/explicit-member-accessibility': [
      'error',
      {
        accessibility: 'explicit',
        overrides: {
          accessors: 'no-public',
          constructors: 'no-public',
          methods: 'explicit',
          properties: 'explicit',
          parameterProperties: 'explicit',
        },
      },
    ],
    '@typescript-eslint/indent': 'off',
    '@typescript-eslint/member-delimiter-style': [
      'off',
      {
        multiline: {
          delimiter: 'none',
          requireLast: true,
        },
        singleline: {
          delimiter: 'semi',
          requireLast: false,
        },
      },
    ],
    '@typescript-eslint/member-ordering': 'error',
    '@typescript-eslint/no-empty-interface': 'error',
    '@typescript-eslint/no-inferrable-types': 'error',
    '@typescript-eslint/no-misused-new': 'error',
    '@typescript-eslint/no-namespace': 'error',
    '@typescript-eslint/no-non-null-assertion': 'error',
    '@typescript-eslint/no-parameter-properties': 'off',
    '@typescript-eslint/no-require-imports': 'error',
    '@typescript-eslint/no-use-before-define': 'off',
    '@typescript-eslint/no-var-requires': 'error',
    '@typescript-eslint/prefer-for-of': 'error',
    '@typescript-eslint/prefer-function-type': 'error',
    '@typescript-eslint/prefer-namespace-keyword': 'error',
    '@typescript-eslint/quotes': ['error', 'single'],
    '@typescript-eslint/triple-slash-reference': 'error',
    '@typescript-eslint/type-annotation-spacing': 'off',
    '@typescript-eslint/unbound-method': 'warn',
    '@typescript-eslint/unified-signatures': 'error',
    'arrow-parens': ['error', 'always'],
    'arrow-body-style': 'error',
    camelcase: 'off',
    'comma-dangle': [
      'error',
      {
        arrays: 'always-multiline',
        objects: 'always-multiline',
        imports: 'always-multiline',
        exports: 'always-multiline',
        functions: 'always-multiline',
      },
    ],
    complexity: 'error',
    'constructor-super': 'error',
    'dot-notation': 'error',
    eqeqeq: ['error', 'smart'],
    'guard-for-in': 'error',
    'id-blacklist': 'error',
    'id-match': 'error',
    'import/no-default-export': 'error',
    'import/no-deprecated': 'warn',
    'import/order': 'error',
    'no-debugger': 'error',
    'no-duplicate-imports': 'error',
    'no-eval': 'error',
    'no-extra-semi': 'off',
    'no-fallthrough': 'error',
    'no-invalid-this': 'warn',
    'no-magic-numbers': ['warn', { ignore: [0, 1], ignoreArrayIndexes: true, enforceConst: true, detectObjects: true }],
    'no-new-wrappers': 'error',
    'no-return-await': 'error',
    'no-shadow': [
      'error',
      {
        hoist: 'all',
      },
    ],
    'no-sparse-arrays': 'error',
    'no-throw-literal': 'error',
    'no-undef-init': 'error',
    'no-underscore-dangle': 'error',
    'no-unsafe-finally': 'error',
    'no-unused-expressions': 'error',
    'no-unused-labels': 'error',
    'no-var': 'error',
    'object-shorthand': 'error',
    'one-var': ['error', 'never'],
    /*
    'prefer-arrow/prefer-arrow-functions': [
      'error',
      {
        disallowPrototype: false,
        singleReturnOnly: true,
        classPropertiesAllowed: true,
        allowStandaloneDeclarations: true,
      },
    ],
     */
    'prefer-object-spread': 'error',
    'quote-props': ['error', 'as-needed'],
    radix: 'error',
    'space-before-function-paren': 'off',
    'space-in-parens': ['off', 'never'],
    'spaced-comment': 'error',
    'use-isnan': 'error',
    // no unused imports
    'no-unused-vars': 'off',
    'unused-imports/no-unused-imports-ts': 2,
    'unused-imports/no-unused-vars-ts': 1,
  },
};