.eslintrc.js

module.exports = {
    extends: ['airbnb-base'],
    env: {
        es6: true,
        node: true,
        mocha: true
    },
    parserOptions: {
        sourceType: 'module',
        ecmaVersion: 2018
    },
    rules: {
        'no-param-reassign': 'error',
        'prefer-template': 'error',
        'no-trailing-spaces': 'error',
        'no-console': 'off',
        'no-use-before-define': 'warn',
        'object-curly-spacing': 'error',
        'no-var': 'error',
        'import/newline-after-import': 'off',
        'max-len': ['error', 220],
        'brace-style': ['error', 'stroustrup'],
        indent: ['warn', 4],
        'comma-dangle': 'off',
        'no-underscore-dangle': 'off',
        'linebreake-style': 'off',
        'object-curly-newline': 'off',
        'newline-per-chained-call': 'off',
        'arrow-body-style': 'off',
        'class-methods-use-this': 'off',
        'no-unused-expressions': 0,
        'arrow-parens': 'off',
        'no-await-in-loop': 'off',
        'no-constant-condition': ['error', { checkLoops: false }],
        'no-restricted-syntax': 'off'
    }
};