old_contents: module.exports = {
    env: {
      browser: true,
      es6: true,
      node: true,
      'shared-node-browser': true
    },
  
    parserOptions: {
      sourceType: 'module',
      ecmaFeatures: {
        experimentalObjectRestSpread: true,
        classes: true
      }
    },
  
    plugins: ['filenames', 'eslint-comments'],
  
    extends: [
      'eslint:recommended',
      'plugin:import/recommended',
      'eslint-config-airbnb-base',
      'eslint-config-airbnb-base/rules/strict'
    ],
  
    rules: {
      'no-console': 'error',
      'comma-dangle': ['error', 'never'],
      'max-len': ['error', 120],
      'one-var': ['error', {uninitialized: 'always', initialized: 'never'}],
      'one-var-declaration-per-line': ['error', 'initializations'],
      'filenames/match-regex': ['error', '^[a-z0-9\\-\\.]+$'],
      'new-cap': ['error', {capIsNewExceptions: ['Map', 'List']}],
      yoda: ['error', 'always'],
      'handle-callback-err': 'error',
      'object-curly-spacing': ['error', 'never'],
      'import/prefer-default-export': 'off',
      'arrow-parens': ['error', 'as-needed'],
      'global-require': 'off',
      'no-underscore-dangle': ['error', {allow: ['_links', '_embedded']}],
      'no-unused-vars': ['error', {ignoreRestSiblings: true}],
      'no-multi-spaces': ['error', {ignoreEOLComments: true}],
      'eslint-comments/disable-enable-pair': 'error',
      'eslint-comments/no-duplicate-disable': 'error',
      'eslint-comments/no-unlimited-disable': 'error',
      'eslint-comments/no-unused-disable': 'error',
      'eslint-comments/no-unused-enable': 'error',
      'object-curly-newline': [
        'error',
        {
          ObjectExpression: {
            multiline: true,
            consistent: true
          },
          ObjectPattern: {
            multiline: true,
            consistent: true
          },
          ImportDeclaration: {
            multiline: true,
            consistent: true,
            minProperties: 0
          }
        }
      ]
    }
  };
  
new_contents: module.exports = {
    env: {
      browser: true,
      es6: true,
      node: true,
      'shared-node-browser': true
    },
  
    parserOptions: {
      sourceType: 'module',
      ecmaFeatures: {
        classes: true
      },
      ecmaVersion: 2018
    },
  
    plugins: ['filenames', 'eslint-comments'],
  
    extends: [
      'eslint:recommended',
      'plugin:import/recommended',
      'eslint-config-airbnb-base',
      'eslint-config-airbnb-base/rules/strict'
    ],
  
    rules: {
      'no-console': 'error',
      'comma-dangle': ['error', 'never'],
      'max-len': ['error', 120],
      'one-var': ['error', {uninitialized: 'always', initialized: 'never'}],
      'one-var-declaration-per-line': ['error', 'initializations'],
      'filenames/match-regex': ['error', '^[a-z0-9\\-\\.]+$'],
      'new-cap': ['error', {capIsNewExceptions: ['Map', 'List']}],
      yoda: ['error', 'always'],
      'handle-callback-err': 'error',
      'object-curly-spacing': ['error', 'never'],
      'import/prefer-default-export': 'off',
      'arrow-parens': ['error', 'as-needed'],
      'global-require': 'off',
      'no-underscore-dangle': ['error', {allow: ['_links', '_embedded']}],
      'no-unused-vars': ['error', {ignoreRestSiblings: true}],
      'no-multi-spaces': ['error', {ignoreEOLComments: true}],
      'eslint-comments/disable-enable-pair': 'error',
      'eslint-comments/no-duplicate-disable': 'error',
      'eslint-comments/no-unlimited-disable': 'error',
      'eslint-comments/no-unused-disable': 'error',
      'eslint-comments/no-unused-enable': 'error',
      'object-curly-newline': [
        'error',
        {
          ObjectExpression: {
            multiline: true,
            consistent: true
          },
          ObjectPattern: {
            multiline: true,
            consistent: true
          },
          ImportDeclaration: {
            multiline: true,
            consistent: true,
            minProperties: 0
          }
        }
      ]
    }
  };
  
subject: remove depricated experimentalObjectRestSpread