I use VS Code for my Visual Studio Magazine articles and have customized my environment to do this in HTML files, but I've always wanted quick-hit macros to automate tedious tasks. That's "quick hit" ...

If you have an existing web application, open it in Visual Studio Code (preferably copying it to a new development branch) and then use the PWA Studio tools to convert it into a PWA.

Following that plan, the start of the script block in the .file page might look like the following code. As an example, I've included sample code that wires up a JavaScript function to the click event ...