Change the loadedChunks
property, on ChunkedStream
instances, from an Array to a Set
#11972
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In the old code the use of an Array meant that we had to manually track the
numChunksLoaded
property, given that simply using the Arraylength
wouldn't have worked since there's no guarantee that the data is loaded in order when e.g. range requests are in use.Tracking closely related state separately in this manner never seem like a good idea, and we can now instead utilize a Set to avoid that.