Method onGot

packages/editor-core/src/config.ts:311–320

* 获取指定 key 的值，函数回调模式，若多次被赋值，回调会被多次调用 * @param key * @param fn * @returns

(key: string, fn: (data: any) => void)

   * @returns
   */
  onGot(key: string, fn: (data: any) => void): () => void {
    const val = this.config?.[key];
    if (val !== undefined) {
      fn(val);
    }
    this.setWait(key, fn);
    return () => {
      this.delWait(key, fn);
    };
  }

  notifyGot(key: string): void {
    let waits = this.waits.get(key);