Note:

I built this project with the SvelteKit Skeleton template (choose skeleton when prompted after issuing the command below to create a project.)

My goal with this project was to create a minimalist SvelteKit project that I could still use SCSS with, both globally and componenet-level and still have access to the variables and styles in all of the components.

I chose to use the Dart-based Sass compiler instead of node-sass because I have heard that node-sass is deprecated. I am hoping this will keep the process simplified.

One big thing I learned in fighting through this using VSCode as my editor is that any changes made to the svelte.config.js file require restarting the Svelte Language Server (Ctrl/Cmd+Shift+P => Svelte: Restart), then stopping and restarting npm run dev.

I hope that publishing this to GitHub might help others wanting to use SCSS in their SvelteKit projects.

Update 2021-06-06: Added Bootstrap 5 customized with my variable overrides. These variables are available throughout the entire app for components styling.

create-svelte

Everything you need to build a Svelte project, powered by create-svelte;

Creating a project

If you're seeing this, you've probably already done this step. Congrats!

# create a new project in the current directory
npm init svelte@next

# create a new project in my-app
npm init svelte@next my-app

Note: the @next is temporary

Developing

Once you've created a project and installed dependencies with npm install (or pnpm install or yarn), start a development server:

npm run dev

# or start the server and open the app in a new browser tab
npm run dev -- --open

Building

Before creating a production version of your app, install an adapter for your target environment. Then:

npm run build

You can preview the built app with npm run preview, regardless of whether you installed an adapter. This should not be used to serve your app in production.