Vite Vs Webpack
Vite makes the assumption that the development will take place in local machines and that the latest browser will provide support to the ES6 modules natively. This means that no bundling of the code will be done before the starting-up of the server. Even though many browsers natively support the loading of ES modules, it is not possible for all the target audience to be using these browsers alone, hence the need for bundling. If bundling is not done, a lot of round trips will have to be taken for fetching modules in the network. For the loading performance to be optimised during production, tree shaking can be done for bundling the code along with lazy coding or common chunk splitting.
Hot replacement of modules (HMR)
Developers often need to receive feedback quickly in order to decide on the changes to be made to the code. Waiting for full bundling to take place and then loading the page will lead to breakage in the flow and state currently established. Many bundlers provide support to Hot Module Replacement for this reason, which allows the module to replace itself without having an effect on the remaining page.
As the size of the project increases, HMR will take a longer time, thus having an impact on productivity. Vite will help give an edge over other tools for bundling because HMR is performed over native ESM. When an edit is made to a file, Vite will make a precise invalidation in the chain of the edited module and the HMR boundary. This means that HMR is updating at a consistently fast pace irrespective of the size of the application.
Vite makes advantage of the header of HTTP for speeding up the reloading of complete pages. The requests to source code modules are made conditional and the requests to dependency modules are heavily cached with the help of cache control. They are immutable, meaning they cannot hit the server once they have been cached. Vite makes the development server faster by skipping the need for doing bundling. It uses HTTP codes for making the reloading as well as the caching faster. Native ESM is used for Hot Module Replacement and hence the changes are reflected faster.
Is Vite Better than Webpack?
This is what makes Vite faster than Webpack for development. As the size of the application increases, the time that is needed for processing the development will increase slowly. Even if most browsers support native ES modules, shipping of an application that has been bundled that also makes use of performance optimization techniques will lead to better performance compared to an unbundled application. This is why Cute makes use of the shipping technique of a pre-configured build command. Vite gives developers a sensible default of the Roll-up configuration that they can also customise according to their needs.