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Two-pass validation in preview-raw endpoint:
1. Syntax check (catches {% if %}, unclosed tags)
2. StrictUndefined render (catches {{ asset.a }}, {{ bad_var }})
Frontend shows:
- Red error for syntax errors with line number
- Amber warning for undefined variables
- Error line highlighted in editor
Sample context now uses proper structured data (lists of dicts
for assets/albums) so valid field access like {{ asset.filename }}
renders correctly during preview.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
sv
Everything you need to build a Svelte project, powered by sv.
Creating a project
If you're seeing this, you've probably already done this step. Congrats!
# create a new project
npx sv create my-app
To recreate this project with the same configuration:
# recreate this project
npx sv@0.12.8 create --template minimal --types ts --no-install frontend
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
To create a production version of your app:
npm run build
You can preview the production build with npm run preview.
To deploy your app, you may need to install an adapter for your target environment.