Why Vite

The Problems

Slow Server Start

• Dependencies Vite pre-bundles dependencies using esbuild. esbuild is written in Go and pre-bundles dependencies 10-100x faster than JavaScript-based bundlers
• Source code Vite serves source code over native ESM. This is essentially letting the browser take over part of the job of a bundler: Vite only needs to transform and serve source code on demand, as the browser requests it

Slow Updates

In Vite, HMR is performed over native ESM. When a file is edited, Vite only needs to precisely invalidate the chain between the edited module and its closest HMR boundary