Triggering Deploy action without storage space and without deployment-related files in place hangs indefinitely

[filippsen]

Environment/Browser

Version 1.3.0

Description

When deploying with full storage (no space left) and without having the files related to deployment in place, deployer hangs forever with the spinning icon.
Related: #298

Steps to reproduce

1. Get to a point where the local storage is full *
2. Make sure the build directory is present, but the deployment files are not i.e. build directory is not complete (missing files and no space left to add the missing ones)
3. Click Deploy

• See also: Add try/catch in backend.js when saving a file to guard against local… #283

Expected result

Error message or alert.

Actual result

Uncaught DOMException, leading to icon in the Deploy window spinning forever.