type TextEncodeOptions = {options?: boolean, ...};
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;
}
interface PipeThroughTransformStream {
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: PipeThroughTransformStream, 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;
}