Underlying source object for ReadableStream construction.

Callback controller arguments use stream controller types when known; start/pull/cancel remain loosely typed for byte vs default sources.

Fields

@:optionaloptionaltype:Null<String>

@:optionaloptionalstart:Null<Any ‑> Any>

@:optionaloptionalpull:Null<Any ‑> Any>

@:optionaloptionalcancel:Null<Any ‑> Any>

@:optionaloptionalautoAllocateChunkSize:Null<Int>