Over the last couple of days, I banged my head against the wall. I hate when things don’t work as expected. On the other hand, I love challenges.
The thing we are talking about the documentation on “Supporting section background“. To be clear, the documentation is correct. It works as described. The issue I and many others have with this documentation it does not apply to your project.
Whenever you save a TypeScript file in your SPFx project, the build chain creates a new build and refreshes the local workbench automatically.
There are some situations you like to have this support for other asset or frameworks too. In most cases with the PnP/SPFx generator, we need to force a build when a Handlebar or VueJS file get saved.
So the goal is to hijack the build process and add some custom file watch based on the requirement of the framework or file. Why file? Imagine you have an SVG file in your solution. The expected outcome is that you see the changes immediately in your browser.
The key word to this is watch. It requires a custom file extension watch that than trigger the build.
I firmly believe that the Yeoman generator provided by Microsoft is a great tool. It serves all the capabilities to create new web parts, extensions and customisations in the future. With the current support of ReactJS, Knockout and bare-bone HTML version, you have three great possibilities.
This PnP/SPFx generator project goes beyond these possibilities and supports enhanced functionalities. A way to add additional capabilities in the future not even for new frameworks and libraries on the market. It also helps organisations to defined their development standards.