Function pump

src/update/self-update.ts:116–127

()

  await new Promise<void>((resolve, reject) => {
    writer.on('error', reject);
    const pump = async () => {
      try {
        while (true) {
          const { done, value } = await reader.read();
          if (done) { writer.end(); break; }
          writer.write(value);
          received += value.length;
          if (onProgress && total > 0) onProgress(Math.round(received / total * 100));
        }
        resolve();
      } catch (e) { reject(e); }
    };
    pump();
  });
}