List all objects in s3

s3ListAllObjects.js

const s3 = require("../aws").s3;

/**
 * List all objects in the specified S3 folder.
 * @param {String} Bucket
 * @param {String} Prefix
 * @param {String} NextContinuationToken
 * @param {Array} PreviousContents
 * @returns {Promise<Array>} A promise containing an array of all objects in the folder
 */
async function s3ListAllObjects(
  Bucket,
  Prefix,
  NextContinuationToken,
  PreviousContents
) {
  const params = {
    Bucket: Bucket,
    Prefix: Prefix,
    ContinuationToken: NextContinuationToken
  };

  try {
    const res = await s3.listObjectsV2(params).promise();

    const Contents = PreviousContents
      ? PreviousContents.concat(res.Contents)
      : res.Contents;

    if (res.NextContinuationToken) {
      // console.log("NextContinuationToken: " + res.NextContinuationToken);
      // console.log("Contents Length: " + Contents.length);

      return s3ListAllObjects(
        Bucket,
        Prefix,
        res.NextContinuationToken,
        Contents
      );
    } else {
      // console.log("All Contents Length: " + Contents.length);
      // console.log("All Contents: " + JSON.stringify(Contents));

      return Contents;
    }
  } catch (e) {
    console.log("e: " + e);
  }
}

module.exports = s3ListAllObjects;