uppy
This is the server-side component, "Companion" which handles user uploads. It is especially useful for allowing users to upload directly from their Dropbox, GoogleDrive, etc.
B2 Bucket CORS configuration
Apply the rules to the bucket, using b2 CLI
See apply-backblaze-cors-rules.sh
Verify using b2-linux get-bucket futureporn-uppy-dev
Reference
https://www.backblaze.com/docs/cloud-storage-enable-cors-with-the-cli https://uppy.io/docs/aws-s3-multipart/#setting-up-your-s3-bucket