function copyNDeprecatedDeprecated(will be removed after 1.0.0) Use the [Web Streams API]https://developer.mozilla.org/en-US/docs/Web/API/Streams_API instead. import { copyN } from "https://deno.land/std@0.212.0/io/mod.ts"; Deprecated(will be removed after 1.0.0) Use the [Web Streams API]https://developer.mozilla.org/en-US/docs/Web/API/Streams_API instead. copyN(r: Reader,dest: Writer,size: number,): Promise<number>Copy N size at the most. If read size is lesser than N, then returns nread Parametersr: ReaderReader dest: WriterWriter size: numberRead size ReturnsPromise<number>