Upload progress reports complete then long pending

[FreakTheMighty]

When trying to track upload progress from a javascript client, total uploaded bytes grows to 100%, then hits a long pending state. It seems like the progress is reporting bytes uploaded to my local server, then waiting for the upload to google cloud to complete.

The multer code appears to stream the file to google storage, but the behavior feels like it isn't streaming. It seems like it's sending the entire file to the local server, then uploading it to google.