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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { writeAll } from "./write_all.ts";import type { Closer, Writer } from "../types.d.ts";
function isCloser(value: unknown): value is Closer { return typeof value === "object" && value != null && "close" in value && // deno-lint-ignore no-explicit-any typeof (value as Record<string, any>)["close"] === "function";}
export interface WritableStreamFromWriterOptions { /** * If the `writer` is also a `Closer`, automatically close the `writer` * when the stream is closed, aborted, or a write error occurs. * * @default {true} */ autoClose?: boolean;}
/** Create a `WritableStream` from a `Writer`. */export function writableStreamFromWriter( writer: Writer, options: WritableStreamFromWriterOptions = {},): WritableStream<Uint8Array> { const { autoClose = true } = options;
return new WritableStream({ async write(chunk, controller) { try { await writeAll(writer, chunk); } catch (e) { controller.error(e); if (isCloser(writer) && autoClose) { writer.close(); } } }, close() { if (isCloser(writer) && autoClose) { writer.close(); } }, abort() { if (isCloser(writer) && autoClose) { writer.close(); } }, });}