worker.getHeapSnapshot()

• 返回：<Promise> 对包含 V8 堆快照的可读流的 promise

  ¥Returns: <Promise> A promise for a Readable Stream containing a V8 heap snapshot

返回工作线程当前状态的 V8 快照的可读流。有关详细信息，请参阅 v8.getHeapSnapshot()。

¥Returns a readable stream for a V8 snapshot of the current state of the Worker. See v8.getHeapSnapshot() for more details.

如果工作线程不再运行（这可能发生在触发 'exit' 事件 之前），则返回的 Promise 会立即被拒绝，并出现 ERR_WORKER_NOT_RUNNING 错误。

¥If the Worker thread is no longer running, which may occur before the 'exit' event is emitted, the returned Promise is rejected immediately with an ERR_WORKER_NOT_RUNNING error.