timeout[Symbol.toPrimitive]()

• 返回：<integer> 可用于引用此 timeout 的数字

  ¥Returns: <integer> a number that can be used to reference this timeout

将 Timeout 强制为原始类型。该原始类型可用于清除 Timeout。该原始类型只能在创建超时的同一线程中使用。因此，要在 worker_threads 上使用它，则必须首先将其传给正确的线程。这允许增强与浏览器 setTimeout() 和 setInterval() 实现的兼容性。

¥Coerce a Timeout to a primitive. The primitive can be used to clear the Timeout. The primitive can only be used in the same thread where the timeout was created. Therefore, to use it across worker_threads it must first be passed to the correct thread. This allows enhanced compatibility with browser setTimeout() and setInterval() implementations.