Are you talking about recompiling Golang when you make changes to web files (like vue.js files)? If that is the case, there is a better way: You can load a www path that is not built-into rei3 when you start your Golang application.
Here is the explaination from the Github page:
Alternatively, you can use the -wwwpath command line argument to load REI3 with an external www directory, in which you can make changes directly.
This way, you can just make changes to web files, reload your browser (with caching disabled) and your Golang service can keep trucking. In this scenario, you only need to recompile Golang when you change Golang code.