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141 lines (112 loc) · 3.14 KB
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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
type TextEncodeOptions = { options?: boolean, ... };
declare class TextEncoder {
encode(buffer: string, options?: TextEncodeOptions): Uint8Array,
}
declare class ReadableStreamController {
constructor(
stream: ReadableStream,
underlyingSource: UnderlyingSource,
size: number,
highWaterMark: number,
): void,
desiredSize: number,
close(): void,
enqueue(chunk: any): void,
error(error: Error): void,
}
declare class ReadableStreamBYOBRequest {
constructor(controller: ReadableStreamController, view: $TypedArray): void,
view: $TypedArray,
respond(bytesWritten: number): ?any,
respondWithNewView(view: $TypedArray): ?any,
}
declare class ReadableByteStreamController extends ReadableStreamController {
constructor(
stream: ReadableStream,
underlyingSource: UnderlyingSource,
highWaterMark: number,
): void,
byobRequest: ReadableStreamBYOBRequest,
}
declare class ReadableStreamReader {
constructor(stream: ReadableStream): void,
closed: boolean,
cancel(reason: string): void,
read(): Promise<{
value: ?any,
done: boolean,
...
}>,
releaseLock(): void,
}
declare interface UnderlyingSource {
autoAllocateChunkSize?: number,
type?: string,
start?: (controller: ReadableStreamController) => ?Promise<void>,
pull?: (controller: ReadableStreamController) => ?Promise<void>,
cancel?: (reason: string) => ?Promise<void>,
}
declare class TransformStream {
readable: ReadableStream,
writable: WritableStream,
};
type PipeToOptions = {
preventClose?: boolean,
preventAbort?: boolean,
preventCancel?: boolean,
...
};
type QueuingStrategy = {
highWaterMark: number,
size(chunk: ?any): number,
...
};
declare class ReadableStream {
constructor(
underlyingSource: ?UnderlyingSource,
queuingStrategy: ?QueuingStrategy,
): void,
locked: boolean,
cancel(reason: string): void,
getReader(): ReadableStreamReader,
pipeThrough(transform: TransformStream, options: ?any): void,
pipeTo(dest: WritableStream, options: ?PipeToOptions): Promise<void>,
tee(): [ReadableStream, ReadableStream],
};
declare interface WritableStreamController {
error(error: Error): void,
}
declare interface UnderlyingSink {
autoAllocateChunkSize?: number,
type?: string,
abort?: (reason: string) => ?Promise<void>,
close?: (controller: WritableStreamController) => ?Promise<void>,
start?: (controller: WritableStreamController) => ?Promise<void>,
write?: (chunk: any, controller: WritableStreamController) => ?Promise<void>,
}
declare interface WritableStreamWriter {
closed: Promise<any>,
desiredSize?: number,
ready: Promise<any>,
abort(reason: string): ?Promise<any>,
close(): Promise<any>,
releaseLock(): void,
write(chunk: any): Promise<any>,
}
declare class WritableStream {
constructor(
underlyingSink: ?UnderlyingSink,
queuingStrategy: QueuingStrategy,
): void,
locked: boolean,
abort(reason: string): void,
getWriter(): WritableStreamWriter,
}