function Deno.iterDeprecatedDeprecatedUse ReadableStream instead. Deno.iter will be removed in v2.0.0. DeprecatedUse ReadableStream instead. Deno.iter will be removed in v2.0.0. iter(r: Reader, options?: { bufSize?: number; }): AsyncIterableIterator<Uint8Array>Turns a Reader, r, into an async iterator. Turns a Reader, r, into an async iterator. Parametersr: Readeroptionaloptions: { bufSize?: number; }ReturnsAsyncIterableIterator<Uint8Array>