SvelteKit Legacy Template

This project is a SvelteKit template configured for legacy browser support (IE11) using @vitejs/plugin-legacy.

Setup

1. Install dependencies:

   npm install
   # or
   pnpm install
   

Developing

Start the development server:

npm run dev

Note: The development server uses Vite's modern ESM serving and does NOT emulate legacy browsers. To test legacy support, you must build and preview.

Building (Legacy Support)

To generate the production build, which includes both modern chunks and legacy chunks (transpiled for IE11):

npm run build

This command will:

1. Build the server-side code.
2. Build the client-side code (Modern).
3. Generate potential legacy chunks and polyfills via @vitejs/plugin-legacy.

You will see output indicating legacy chunks are being generated.

Serving / Previewing

To serve the built application (production mode) and verify legacy loading:

npm run preview

Open the exposed URL (e.g., http://localhost:4173) in your legacy browser (e.g., IE11 virtual machine) to verify it loads correctly.