JS大类拆分

拆分1

• a.js

const _a = Symbol('a')
const _b = Symbol('b')
const _options = Symbol('options')

module.exports = CIR => class A extends CIR {
  constructor (options) {
    super(options)
    this[_options] = {
      name: 'A',
      ...options
    }
  }

  b () {
    this[_a]()
    this[_b]()
  }

  [_a] () {
    console.log(1)
    return 1
  }

  [_b] () {
    console.log(2)
    return 2
  }
}

拆分2

• b.js

const _a = Symbol('a')
const _b = Symbol('b')
const _options = Symbol('options')

module.exports = CIR => class B extends CIR {
  constructor (options) {
    super(options)
    this[_options] = {
      name: 'B',
      ...options
    }
  }

  b () {
    this[_a]()
    this[_b]()
  }

  [_a] () {
    console.log(3)
    return 3
  }

  [_b] () {
    console.log(4)
    return 4
  }
}

汇总

• index.js

const list = [
  require('./a'),
  require('./b')
]
const Base = list.reduce((a, b) => b(a), class B {})

class Case extends Base {
  constructor (options) {
    super(options)
    this.options = options
  }
}

const ca = new Case({})
console.log(ca)

输出

G:\workspaces\NODE\beauty>node test.js
Case {
  options: {},
  [Symbol(options)]: { name: 'A' },
  [Symbol(options)]: { name: 'B' }
}