.eslintrc.js

module.exports = {
  root: true,
  parserOptions: {
    ecmaVersion: 2018,
    parser: 'babel-eslint',
    sourceType: 'module'
  },
  env: {
    browser: true,
    es6: true,
    node: true
  },
  extends: [
    'plugin:prettier/recommended',
    'plugin:import/errors',
    'plugin:import/warnings'
  ],
  plugins: ['promise'],
  globals: {
    Blob: true,
    Image: true,
    URL: true,
    Apex: true,
    ApexCharts: true,
    screen: true
  },
  rules: {
    // Remove this when prettier 2.0 is out
    'space-before-function-paren': 0, // Do not clash with Prettier
    'no-shadow': 1,
    'no-undef': 1,
    'no-unused-vars': [
      1,
      { vars: 'all', args: 'none', ignoreRestSiblings: true }
    ],
    'constructor-super': 1,
    'no-const-assign': 1,
    'no-dupe-class-members': 1,
    'no-var': 1,
    'object-shorthand': [1, 'always'],
    'prefer-arrow-callback': [
      1,
      {
        allowNamedFunctions: false,
        allowUnboundThis: true
      }
    ],
    'no-cond-assign': [1, 'always'],
    'no-dupe-args': 1,
    'no-dupe-keys': 1,
    'no-inner-declarations': 1,
    'no-invalid-regexp': 1,
    'no-sparse-arrays': 1,
    'no-unreachable': 1,
    'dot-notation': [1, { allowKeywords: true }],
    eqeqeq: [1, 'always', { null: 'ignore' }],
    'no-eval': 1,
    radix: 1,
    'no-return-assign': [1, 'always'],
    'no-useless-return': 1,
    'no-sequences': 1,
    'no-extend-native': 1,
    'no-fallthrough': 1,
    'no-global-assign': [1, { exceptions: [] }],
    'no-implied-eval': 1,
    'no-lone-blocks': 1,
    'no-multi-str': 1,
    'no-useless-escape': 1,

    'promise/no-promise-in-callback': 1,
    'promise/no-callback-in-promise': 1,
    'promise/valid-params': 1
  },
  overrides: [
    {
      files: ['tests/**/*.js'],
      globals: {
        describe: true,
        it: true,
        expect: true
      }
    }
  ]
}