TaskHandler.js

import EventEmitter from 'events'
import load from 'gulpy-boiler-load-plugins'
import merge from 'merge-deep'
import cli from './cli'

export default class TaskHandler extends EventEmitter {
  constructor(name, plugins = {}, config = {}) {
    super()
    this.name = name
    this.plugins = plugins
    this.config = config
  }

  cli(opts = {}) {
    const data = cli(opts)
    const {flags} = data
    const cliData = Object.keys(flags).reduce((acc, key) => {
      const aliasVal = opts.alias && opts.alias[key]

      if (aliasVal) {
        Object.assign(acc.flags, {
          [aliasVal]: flags[key]
        })
      }

      return acc
    }, data)

    this.configure({
      cli: cliData
    })

    return cliData
  }

  /**
   * Merge config/plugins from base tasks with
   *  - config/plugins external task
   *  - onto context of TaskHandler parent instance
   */
  configure(config = {}) {
    this.config = merge({}, this.config, config)

    return this.config
  }

  loadPlugins(opts = {}) {
    Object.assign(this.plugins, load(opts))

    return this.plugins
  }

  on(event, cb) {
    super.on(event, cb)

    return this
  }

  run(gulp, ...args) {
    return this.task(gulp, this.plugins, this.config, ...args)
  }
}