import { type Fetch } from "./builtin-types.js";
import { type ReadableStream } from "./shim-types.js";
export declare function getDefaultFetch(): Fetch;
/**
 * A minimal copy of the NodeJS `stream.Readable` class so that we can
 * accept the NodeJS types in certain places, e.g. file uploads
 *
 * https://nodejs.org/api/stream.html#class-streamreadable
 */
export interface ReadableLike {
    readable: boolean;
    readonly readableEnded: boolean;
    readonly readableFlowing: boolean | null;
    readonly readableHighWaterMark: number;
    readonly readableLength: number;
    readonly readableObjectMode: boolean;
    destroyed: boolean;
    read(size?: number): any;
    pause(): this;
    resume(): this;
    isPaused(): boolean;
    destroy(error?: Error): this;
    [Symbol.asyncIterator](): AsyncIterableIterator<any>;
}
/**
 * Determines if the given value looks like a NodeJS `stream.Readable`
 * object and that it is readable, i.e. has not been consumed.
 *
 * https://nodejs.org/api/stream.html#class-streamreadable
 */
export declare function isReadableLike(value: any): boolean;
/**
 * A minimal copy of the NodeJS `fs.ReadStream` class for usage within file uploads.
 *
 * https://nodejs.org/api/fs.html#class-fsreadstream
 */
export interface FsReadStreamLike extends ReadableLike {
    path: {};
}
/**
 * Determines if the given value looks like a NodeJS `fs.ReadStream`
 * object.
 *
 * This just checks if the object matches our `Readable` interface
 * and defines a `path` property, there may be false positives.
 *
 * https://nodejs.org/api/fs.html#class-fsreadstream
 */
export declare function isFsReadStreamLike(value: any): value is FsReadStreamLike;
type ReadableStreamArgs = ConstructorParameters<typeof ReadableStream>;
export declare function makeReadableStream(...args: ReadableStreamArgs): ReadableStream;
export declare function ReadableStreamFrom<T>(iterable: Iterable<T> | AsyncIterable<T>): ReadableStream<T>;
/**
 * Most browsers don't yet have async iterable support for ReadableStream,
 * and Node has a very different way of reading bytes from its "ReadableStream".
 *
 * This polyfill was pulled from https://github.com/MattiasBuelens/web-streams-polyfill/pull/122#issuecomment-1627354490
 */
export declare function ReadableStreamToAsyncIterable<T>(stream: any): AsyncIterableIterator<T>;
export {};
//# sourceMappingURL=shims.d.ts.map