- Returns: {Promise} A promise for a Readable Stream containing a V8 heap snapshot
Returns a readable stream for a V8 snapshot of the current state of the Worker.
See [v8.getHeapSnapshot()
][] for more details.
If the Worker thread is no longer running, which may occur before the
['exit'
event][] is emitted, the returned Promise
will be rejected
immediately with an [ERR_WORKER_NOT_RUNNING
][] error.