.eslintrc.js

module.exports = {
  extends: 'eslint:recommended',
  env: {
    browser: true,
    mocha: true,
    node: true,
    es6: true
  },
  parserOptions: {
    sourceType: 'module',
    ecmaFeatures: {
      modules: true
    }
  },
  globals: {
    sinon: true,
    expect: true
  },
  rules: {
    'no-unused-vars': [1, { varsIgnorePattern: '^h$' }],
    'no-cond-assign': 1,
    'no-empty': 0,
    'no-console': 1,
    camelcase: 0,
    'comma-style': 2,
    'comma-dangle': [2, 'never'],
    indent: ['error', 2, { 'SwitchCase': 1 }],
    'no-mixed-spaces-and-tabs': [2, 'smart-tabs'],
    'no-trailing-spaces': [2, { skipBlankLines: true }],
    'max-nested-callbacks': [2, 3],
    'no-eval': 2,
    'no-implied-eval': 2,
    'guard-for-in': 0,
    eqeqeq: 0,
    'no-else-return': 2,
    'no-redeclare': 2,
    'no-dupe-keys': 2,
    radix: 2,
    strict: [2, 'never'],
    'no-shadow': 0,
    'callback-return': [1, ['callback', 'cb', 'next', 'done']],
    'no-delete-var': 2,
    'no-undef-init': 2,
    'no-shadow-restricted-names': 2,
    'handle-callback-err': 0,
    'no-lonely-if': 2,
    'keyword-spacing': 2,
    'constructor-super': 2,
    'no-this-before-super': 2,
    'no-dupe-class-members': 2,
    'no-const-assign': 2,
    'no-useless-concat': 2
  }
}