std/streams/writer_from_stream_writer.ts
2024-01-09 16:14:28 +11:00

39 lines
1.1 KiB
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import type { Writer } from "../io/types.ts";
/**
* Create a {@linkcode Writer} from a {@linkcode WritableStreamDefaultWriter}.
*
* @example
* ```ts
* import { copy } from "https://deno.land/std@$STD_VERSION/streams/copy.ts";
* import { writerFromStreamWriter } from "https://deno.land/std@$STD_VERSION/streams/writer_from_stream_writer.ts";
*
* const file = await Deno.open("./deno.land.html", { read: true });
*
* const writableStream = new WritableStream({
* write(chunk): void {
* console.log(chunk);
* },
* });
* const writer = writerFromStreamWriter(writableStream.getWriter());
* await copy(file, writer);
* file.close();
* ```
*
* @deprecated (will be removed after 1.0.0) Use {@linkcode WritableStreamDefaultWriter} directly.
*/
export function writerFromStreamWriter(
streamWriter: WritableStreamDefaultWriter<Uint8Array>,
): Writer {
return {
async write(p: Uint8Array): Promise<number> {
await streamWriter.ready;
await streamWriter.write(p);
return p.length;
},
};
}