.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
    node: true
  },
  parserOptions: {
    parser: 'babel-eslint'
  },
  extends: [
    'airbnb-base'
  ],
  // add your custom rules here
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'no-unused-vars': 1,
    'max-len': [
      'warn',
      {
        code: 400,
        ignoreComments: true,
        ignoreTrailingComments: true,
        ignoreUrls: true,
        ignoreStrings: true,
        ignoreTemplateLiterals: true,
        ignoreRegExpLiterals: true
      }
    ],
    'prefer-destructuring': [
      'error',
      {
        AssignmentExpression: {
          array: false
        }
      },
      {
        enforceForRenamedProperties: false
      }
    ]
  }
};