.eslintrc.js

/**
 * Copyright Microsoft Corporation. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
module.exports = {
  'parser': '@typescript-eslint/parser',
  'plugins': ['@typescript-eslint', 'notice'],
  'parserOptions': {
    ecmaVersion: 9,
    sourceType: 'module',
  },
  /**
     * ESLint rules
     *
     * All available rules: http://eslint.org/docs/rules/
     *
     * Rules take the following form:
     *   "rule-name", [severity, { opts }]
     * Severity: 2 == error, 1 == warning, 0 == off.
     */
  'rules': {
    /**
         * Enforced rules
         */
    // syntax preferences
    'quotes': [2, 'single', {
      'avoidEscape': true,
      'allowTemplateLiterals': true
    }],
    'semi': 2,
    'no-extra-semi': 2,
    'comma-style': [2, 'last'],
    'wrap-iife': [2, 'inside'],
    'spaced-comment': [2, 'always', {
      'markers': ['*']
    }],
    'eqeqeq': [2],
    'accessor-pairs': [2, {
      'getWithoutSet': false,
      'setWithoutGet': false
    }],
    'brace-style': [2, '1tbs', {'allowSingleLine': true}],
    'curly': [2, 'multi-or-nest', 'consistent'],
    'new-parens': 2,
    'arrow-parens': [2, 'as-needed'],
    'prefer-const': 2,
    'quote-props': [2, 'consistent'],

    // anti-patterns
    'no-var': 2,
    'no-with': 2,
    'no-multi-str': 2,
    'no-caller': 2,
    'no-implied-eval': 2,
    'no-labels': 2,
    'no-new-object': 2,
    'no-octal-escape': 2,
    'no-self-compare': 2,
    'no-shadow-restricted-names': 2,
    'no-cond-assign': 2,
    'no-debugger': 2,
    'no-dupe-keys': 2,
    'no-duplicate-case': 2,
    'no-empty-character-class': 2,
    'no-unreachable': 2,
    'no-unsafe-negation': 2,
    'radix': 2,
    'valid-typeof': 2,
    'no-implicit-globals': [2],

    // es2015 features
    'require-yield': 2,
    'template-curly-spacing': [2, 'never'],

    // spacing details
    'space-infix-ops': 2,
    'space-in-parens': [2, 'never'],
    'space-before-function-paren': [2, {
      'anonymous': 'never',
      'named': 'never',
      'asyncArrow': 'always'
    }],
    'no-whitespace-before-property': 2,
    'keyword-spacing': [2, {
      'overrides': {
        'if': {'after': true},
        'else': {'after': true},
        'for': {'after': true},
        'while': {'after': true},
        'do': {'after': true},
        'switch': {'after': true},
        'return': {'after': true}
      }
    }],
    'arrow-spacing': [2, {
      'after': true,
      'before': true
    }],

    // file whitespace
    'no-multiple-empty-lines': [2, {'max': 2}],
    'no-mixed-spaces-and-tabs': 2,
    'no-trailing-spaces': 2,
    'linebreak-style': [ process.platform === 'win32' ? 0 : 2, 'unix' ],
    'indent': [2, 2, { 'SwitchCase': 1, 'CallExpression': {'arguments': 2}, 'MemberExpression': 2 }],
    'key-spacing': [2, {
      'beforeColon': false
    }],
    // copyright
    'notice/notice': [2, {
      'mustMatch': 'Copyright',
      'templateFile': './copyright.js',
    }],
  }
};