export function zipReadableStreams<T>( ...streams: ReadableStream<T>[]): ReadableStream<T> { const readers = streams.map((s) => s.getReader()); return new ReadableStream<T>({ async start(controller) { try { let resolved = 0; while (resolved != streams.length) { for (const [key, reader] of Object.entries(readers)) { const { value, done } = await reader.read(); if (!done) { controller.enqueue(value!); } else { resolved++; readers.splice(+key, 1); } } } controller.close(); } catch (e) { controller.error(e); } }, });}