method ReadableBase.prototype.flatMap
Usage
import { ReadableBase } from "node:stream";
This method returns a new stream by applying the given callback to each chunk of the stream and then flattening the result.
It is possible to return a stream or another iterable or async iterable from fn and the result streams will be merged (flattened) into the returned stream.
fn: (data: any, options?: Pick<ArrayOptions, "signal">) => any
a function to map over every chunk in the stream. May be async. May be a stream or generator.
optional
options: ArrayOptions