Deleting the source code thows an exception

[lordrip]

Describe the Bug

An unhandled exception is thrown upon deleting the source code

Steps to Reproduce the Bug or Issue

1. Starting with a blank canvas.
2. Delete all the source code.
3. See the exception thrown.

Screenshots or Videos

Screencast from 2023-06-13 16-09-37.webm

Platform

• OS: [Linux]
• Browser: [Firefox]
• Version: [1.0.0]

[tplevko]

Investigating this issue let me to figuring, that the error was there for quite a long time, but was visible only in the console. Only after this commit - upgrading the webpack-dev-server, which introduced this fix - overlay displays unhandled promise rejection started the error appear in the overlay.

That being said, there seems to be an issue with the version of monaco-editor in the package.json. The issue seems to be occurring since the upgrade to version 0.35.0 - prior to this version there was no such error.

The question now is, whether we want to downgrade the monaco-editor to version 0.34.1, or should I try to find another solution.

[lordrip]

I think that it will be better to leave the version downgrade as a last-resort solution since in production mode, there's a console error only.

[lordrip]

Just for testing purposes, I downgraded monaco-editor to 0.34.1 and I don't see the error message in Firefox :thinking:

[tplevko]

I know - going through the changelog from monaco-editor 0.35.0, I can't figure out, what might have introduced this error.