Node.js & Amazon S3: How to iterate through all files in a bucket?

Question

Is there any Amazon S3 client library for Node.js that allows listing of all files in S3 bucket?

The most known aws2js and knox don\'t seem to have this functionalit

Answer 1

Here's what I came up with based on the other answers.
You can await listAllKeys() without having to use callbacks.

const listAllKeys = () =>
  new Promise((resolve, reject) => {
    let allKeys = [];
    const list = marker => {
      s3.listObjects({ Marker: marker }, (err, data) => {
        if (err) {
          reject(err);
        } else if (data.IsTruncated) {
          allKeys.push(data.Contents);
          list(data.NextMarker || data.Contents[data.Contents.length - 1].Key);
        } else {
          allKeys.push(data.Contents);
          resolve(allKeys);
        }
      });
    };
    list();
  });

This assumes you've initialized the s3 variable like so

const s3 = new aws.S3({
  apiVersion: API_VERSION,
  params: { Bucket: BUCKET_NAME }
});