ReadonlyreadableThe readable read-only property of the TransformStream interface returns the ReadableStream instance controlled by this TransformStream. This stream emits the transformed output data.
ReadonlywritableThe writable read-only property of the TransformStream interface returns the WritableStream instance controlled by this TransformStream. This stream accepts input data that will be transformed and emitted to the readable stream.
The
TransformStreaminterface of the Streams API represents a concrete implementation of the pipe chain transform stream concept.MDN Reference