vite-plugin-dynamic-prefetch

vite-plugin-dynamic-prefetch is a Vite plugin that enhances the performance of web applications by supporting prefetching for dynamic imports at runtime. This plugin allows developers to optimize loading times by prefetching resources that are likely to be needed in the near future.

The Problem It Solves

In modern web applications, dynamic imports are often used to load modules on demand. However, this can lead to delays in loading critical resources, negatively impacting the user experience. This plugin addresses this issue by automatically generating prefetch links for dynamic imports when used with import() syntax, a feature not natively supported by the current version of Vite. The syntax of this plugin is inspired by Webpack's hint comment in the prefetch module feature.

How to Install It

To install vite-plugin-dynamic-prefetch, run the following command in your project directory:

npm install --save-dev vite-plugin-dynamic-prefetch

Usage

Inject vite-plugin-dynamic-prefetch in the Vite config:

import { defineConfig } from 'vite'
import dynamicPrefetch from 'vite-plugin-dynamic-prefetch'

export default defineConfig({
  plugins: [dynamicPrefetch()],
})

Add the hint comment /* vitePrefetch: true */ right before the module path in the import statement:

import { lazy } from 'react';

const ComponentA = lazy(() => import(/* vitePrefetch: true */ 'path/to/ComponentA'))

Limitations

The current version has the following limitations:

• Compatible only with Vite 4.0.0 and above.
• Does not support variable import paths.
• Works for bundled code (not in development mode).

License

MIT