CONSOLE MESSAGE: Unhandled Promise Rejection: error1: error1 message

PASS backpressure allows no transforms with a default identity transform and no reader
PASS backpressure only allows one transform() with a identity transform with a readable HWM of 1 and no reader
PASS transform() should keep being called as long as there is no backpressure
PASS writes should resolve as soon as transform completes
PASS calling pull() before the first write() with backpressure should work
PASS transform() should be able to read the chunk it just enqueued
PASS blocking transform() should cause backpressure
PASS writer.closed should resolve after readable is canceled during start
PASS writer.closed should resolve after readable is canceled with backpressure
PASS writer.closed should resolve after readable is canceled with no backpressure
PASS cancelling the readable should cause a pending write to resolve
PASS cancelling the readable side of a TransformStream should abort an empty pipe
PASS cancelling the readable side of a TransformStream should abort an empty pipe after startup
PASS cancelling the readable side of a TransformStream should abort a full pipe