Filepicker pickMultiple -> store -> remove

pickMultiple_store_remove.js.coffee

filepicker.pickMultiple picker_options, (pick_fpfiles) ->
  for pick_fpfile, i in pick_fpfiles
    sanitized_filename = sanitize_filename(pick_fpfile.filename)

    filepicker.store pick_fpfile, store_options, (store_fpfile) ->
      # Remove files from both fp.io and our root s3 path

      # Here's where the problem happens. pick_fpfile is always the last from the list of pick_fpfiles since filepicker.store is asynchronous and pick_fpfile has already changed by the time the filepicker.remove's success callback has returned
      filepicker.remove pick_fpfile, {policy: security.policy, signature: security.signature}