Method constructor

packages/reactivity/src/ref.ts:306–311

(factory: CustomRefFactory<T, S>)

  public _value: T = undefined!

  constructor(factory: CustomRefFactory<T, S>) {
    const dep = (this.dep = new Dep())
    const { get, set } = factory(dep.track.bind(dep), dep.trigger.bind(dep))
    this._get = get
    this._set = set
  }

  get value(): T {
    return (this._value = this._get())