Convert readable stream to buffer

streamToBuffer.mjs

const streamToBuffer = (readableStream) => {
  if (!readableStream) {
    throw new Error('Error: readableStream can not be null')
  }
  return new Promise((resovle, reject) => {
    const buffers = [];
    readableStream.on('data', (chunks) => {
      buffers.push(chunks);
    });
    readableStream.once('end', () => {
      resovle(Buffer.concat(buffers));
    });
    readableStream.once('error', (error) => {
      reject(error)
    });
  })
}

export default streamToBuffer;

import fs from 'fs';

(async () => {
  const rad = fs.createReadStream('./image.png')
  const buffers = await streamToBuffer(rad);
  const write = fs.createWriteStream('./test.png');
  write.write(buffers);
  write.end();
})()

1. Convert stream into buffer?
2. Node.js: How to read a stream into a buffer?