Svelte + TS + Vite VSCode Custom Editor Extension

This is a minimal template to get started developing VSCode extensions using typescript, svelte, and vite.

Basic Structure

The extension and webview are treated as two separate projects.

extension is a simpler version of the custom-editor-example and is where all of the vscode extension logic lives.

webview is the svelte-ts template updated to be a library that can be loaded by the extension iframe template instead of the default index.html. Everything in the webview is expected to run within the iframe initialized by vscode when a custom editor is initialized.

They are connected by an html template created in the editor provider.

Setup

Make sure your system has:

• NodeJS
• pnpm
• vscode
• git

With those in place you can clone this repo and run:

pnpm install

Building and running

1. extension and webview have different build processes, to run both using concurrently you can do:

   pnpm run build

2. If you haven't already, open this repo in vscode. To debug hit F5 or go to the debug tab and use the Launch Extension option for Run and Debug.
3. Open a .txt file in the window with your extension.
4. Run the View: Reopen Editor With... command and select Custom Edit.

After that you should see the Svelte demo page!

Notes + caveats

• This project is set up with a minimal build process, you should alter things for a proper production build.
• tsc is used to compile extension for simplicity. Setting a different build pipeline may scale better for larger
• extensions.
• User beware, I am relatively new to vite + svelte + vscode extension development. I suspect this repo will change as I learn more.