A high-precision floating-point monotonically increasing timestamp. Comparable and precise, but not related to specific current time.
To link this to the current time, compare it to timingEvents.startTime.
The id of the request or response this data belongs to.
Indicates whether the body has completed or whether there's more coming. This will not be set if the body is aborted incomplete - listen for abort events separately to check for this.
The contents of the chunk as a raw buffer. Note that this may be empty, when the body is finishing, if it wasn't known to be finished at the preceeding chunk of data.