import { Readable } from 'stream';
import type { Blob } from '@atlaspack/types-internal';
export declare function measureStreamLength(stream: Readable): Promise<number>;
export declare function readableFromStringOrBuffer(str: string | Buffer): Readable;
export declare function bufferStream(stream: Readable): Promise<Buffer>;
export declare function blobToStream(blob: Blob): Readable;
export declare function streamFromPromise(promise: Promise<Blob>): Readable;
export declare function fallbackStream(stream: Readable, fallback: () => Readable): Readable;