parse-options.js

import {resolve} from 'path'
import styles from 'chalk'
import * as fs from 'fs'

const DEFAULT_OPTIONS = {
  nodeBin: 'node',
  maxAttempts: 3,
  protractorArgs: [],
  // set color to one of the colors available at 'chalk' - https://github.com/chalk/ansi-styles#colors
  // set false to disable coloring
  color: 'magenta',
  // the name of one of the included parsers
  // a function to be used as a parser
  // or the path to a node module that exports a parser
  parser: 'standard',
  // specify a different protractor config to apply after the first execution attempt
  // either specify a config file, or cli args (ex. --capabilities.browser=chrome)
  protractorRetryConfig: undefined
}

function parseOptions (providedOptions) {
  let options = Object.assign({}, DEFAULT_OPTIONS, providedOptions)

  // normalizing options.color to be a boolean or a color value
  if (!(options.color in styles)) {
    if (options.color === false || options.color === 'false') {
      options.color = false
    } else {
      throw new Error('Invalid color option. Color must be one of the supported chalk colors: https://github.com/chalk/ansi-styles#colors')
    }
  }

  if (options.protractorRetryConfig) {
    let configPath = resolve(options.protractorRetryConfig)
    try {
      fs.lstatSync(configPath).isFile()
      options.protractorRetryConfig = configPath
    } catch (e) {
      // do nothing, not a config path
    }
  }

  if (options.protractorPath) {
    options.protractorPath = resolve(options.protractorPath)
  } else {
    // '.../node_modules/protractor/lib/protractor.js'
    let protractorMainPath = require.resolve('protractor')
    // '.../node_modules/protractor/bin/protractor'
    options.protractorPath = resolve(protractorMainPath, '../../bin/protractor')
  }

  return options
}

export default parseOptions