Method append

src/pkg/utils/hookManager.ts:5–8

(...fns: ((...args: any) => any)[])

  // 存储卸载时调用的钩子函数；unhook 后置为 null
  private unhooks: (() => void)[] | null = [];
  public append(...fns: ((...args: any) => any)[]) {
    // 已经 unhook 的情况下保持幂等，直接忽略追加
    this.unhooks?.push(...fns);
  }
  public readonly unhook = () => {
    // 已经 unhook 过则保持幂等
    this.isMounted = false;