.eslintrc.js

module.exports = {
  'root': true,
  'extends': [
    'eslint:recommended',
    'plugin:eslint-plugin/recommended',
    'plugin:node/recommended',
  ],
  'rules': {
    'quotes': [2, 'single', { 'avoidEscape': true }],
    'no-irregular-whitespace': 'warn',
    'brace-style': ['error', '1tbs',
      {
        allowSingleLine: true,
      },
    ],
    'indent': ['error', 2],
    'array-bracket-spacing': ['error', 'never',
    ],
    'object-curly-spacing': ['error', 'always',
    ],
    'computed-property-spacing': ['error', 'never',
    ],
    'space-in-parens': ['error', 'never',
    ],
    'no-trailing-spaces': 'error',
    'template-curly-spacing': 'off',
    'no-template-curly-in-string': 'off',
    'max-len': 'off',
    semi: ['error', 'always',
      {
        omitLastInOneLineBlock: true,
      },
    ],
    'comma-dangle': ['error', 'always-multiline',
    ],
    'prefer-destructuring': 'off',
    'no-console': 'error',
    'no-debugger': 'error',
    'object-curly-newline': [
      'error',
      {
        ImportDeclaration: 'never', ExportDeclaration: 'never',
      },
    ],
    'no-unused-vars': 'warn',
    'no-unused-expressions': 'warn',
    'consistent-return': 'off',
    'no-case-declarations': 'error',
    'no-use-before-define': ['error',
      {
        functions: false,
      },
    ],
    'default-case': 'error',
    'no-plusplus': ['warn',
      {
        allowForLoopAfterthoughts: true,
      },
    ],
    'import/prefer-default-export': 'off',
    'class-methods-use-this': 'warn',
    'no-multiple-empty-lines': ['error',
      {
        max: 3,
      },
    ],
    'func-names': ['error', 'as-needed',
    ],
    'arrow-parens': ['error', 'always',
    ],
    radix: 'warn',
    'no-param-reassign': 'error',
    'no-underscore-dangle': 'off',
    'prefer-promise-reject-errors': 'off',
  },
};