Modifying webresources in D365 CRM is a cumbersome process. If we directly edit the scripts in CRM then intellisense and formatting options aren't available and syntax errors aren't detected. So normally we download and open these webresources in code editors like VS Code and then upload it back into CRM. The solution for above problem is to have an editor like VS Code in the CRM itself. This is achievable by using the Monaco editor which is what powers VS Code, and is open sourced by Microsoft as done in below project
https://github.com/ginow/WebresourceEditor
Will Microsoft make it available in D365 for general public?