.eslintrc.js

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

 const variableNamePattern = String.raw`\s*[a-zA-Z_$][a-zA-Z_$\d]*\s*`;
 const maxLenIgnorePattern = String.raw`^(?:var|let|const|import type)\s+` +
   '{?' + variableNamePattern + '(?:,' + variableNamePattern + ')*}?' +
   String.raw`\s*(?:=\s*require\(|from)[a-zA-Z_+./"'\s\d\-]+\)?[^;\n]*[;\n]`;

module.exports = {
  extends: 'fbjs/strict',
  rules: {
    'comma-dangle': [2, {
      arrays: 'always-multiline',
      objects: 'always-multiline',
      imports: 'always-multiline',
      exports: 'always-multiline',
      functions: 'always-multiline',
    }],
    'max-len': [2, 80, 2, {
      'ignorePattern': maxLenIgnorePattern,
      'ignoreUrls': true,
    }],
  },
};