I'm using the metronic 8, but the build speed is too slow. It takes about four or five minutes I wonder if there is a way to improve it. For example, I want to know if I can use vite instead of webpack-rtl or other packages.
Hi,webpack-rtl
isn't for application building, it's for the configuration of the RTL version of the app.
About building time, we use CRA https://create-react-app.dev/, and don't have a plan to move to the Vite. We can't forbid to not using Vite in your application, but in that case, we aren't able you help you with your probably possible issues then.
You can reduce the building time with a clearing theme (don't think that you need everything in the app => here is the doc of how to create a skeleton: https://gist.github.com/carmelodevuz/35cbdd669fea5d678278491b810884d2.
Regards,
Keenthemes support