要將 ReadableStream 寫入磁盤，首先從流創建一個 Response 實例。然後可以使用 Bun.write() 將此 Response 寫入磁盤。

const stream: ReadableStream = ...;
const path = "./file.txt";
const response = new Response(stream);

await Bun.write(path, response);

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請參閱 文檔 > API > File I/O 獲取 Bun.write() 的完整文檔。