Web Streams API TransformStream "transformer" is missing the "cancel" method from the WHATWG streams standard

[TomStrepsil]

Affected URL(s)

https://nodejs.org/api/webstreams.html#new-transformstreamtransformer-writablestrategy-readablestrategy

Description of the problem

Despite the code ostensibly supporting the cancel: TransformerCancelCallback member of the WHATWG streams Transformer, it is not mentioned in the documentation.

Presumably due to this omission, it is also missing from latest @types/node.