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denoland-deno/cli/js/streams/readable-stream-byob-request.ts
Nick Stott 65d9286203 Re-enable basic stream support for fetch bodies (#3192)
* Add sd-streams from https://github.com/stardazed/sd-streams/blob/master/packages/streams/src/

* change the interfaces in dom_types to match what sd-streams expects
2019-10-28 12:41:36 -04:00

60 lines
1.8 KiB
TypeScript

// Forked from https://github.com/stardazed/sd-streams/tree/8928cf04b035fd02fb1340b7eb541c76be37e546
// Copyright (c) 2018-Present by Arthur Langereis - @zenmumbler MIT
/**
* streams/readable-stream-byob-request - ReadableStreamBYOBRequest class implementation
* Part of Stardazed
* (c) 2018-Present by Arthur Langereis - @zenmumbler
* https://github.com/stardazed/sd-streams
*/
import * as rs from "./readable-internals.ts";
export class ReadableStreamBYOBRequest {
[rs.associatedReadableByteStreamController_]:
| rs.SDReadableByteStreamController
| undefined;
[rs.view_]: ArrayBufferView | undefined;
constructor() {
throw new TypeError();
}
get view(): ArrayBufferView {
if (!rs.isReadableStreamBYOBRequest(this)) {
throw new TypeError();
}
return this[rs.view_]!;
}
respond(bytesWritten: number): void {
if (!rs.isReadableStreamBYOBRequest(this)) {
throw new TypeError();
}
if (this[rs.associatedReadableByteStreamController_] === undefined) {
throw new TypeError();
}
// If! IsDetachedBuffer(this.[[view]].[[ViewedArrayBuffer]]) is true, throw a TypeError exception.
return rs.readableByteStreamControllerRespond(
this[rs.associatedReadableByteStreamController_]!,
bytesWritten
);
}
respondWithNewView(view: ArrayBufferView): void {
if (!rs.isReadableStreamBYOBRequest(this)) {
throw new TypeError();
}
if (this[rs.associatedReadableByteStreamController_] === undefined) {
throw new TypeError();
}
if (!ArrayBuffer.isView(view)) {
throw new TypeError("view parameter must be a TypedArray");
}
// If! IsDetachedBuffer(view.[[ViewedArrayBuffer]]) is true, throw a TypeError exception.
return rs.readableByteStreamControllerRespondWithNewView(
this[rs.associatedReadableByteStreamController_]!,
view
);
}
}