* **Node.js Version**: any * **OS**: any * **Scope (install, code, runtime, meta, other?)**: code * **Module (and version) (if relevant)**: stream [The document for `transform._transform()`](https://nodejs.org/api/stream.html#stream_transform_transform_chunk_encoding_callback) says that "The `transform.push()` method may be called zero or more times" in it. [The backpressure document](https://nodejs.org/en/docs/guides/backpressuring-in-streams) says that you must respect the return value of `.push()` and should stop calling it when it returns `false`. However, it is not clear what I should do if `.push()` returns `false` when I have more data to push in the `transform._transform()` implementation.