sv add

sv add updates an existing project with new functionality.

Usage

npx sv add

npx sv add [add-ons]

You can select multiple space-separated add-ons from the list below, or you can use the interactive prompt.

Options

-C, --cwd

Path to the root of your Svelte(Kit) project.

--no-git-check

Even if some files are dirty, no prompt will be shown

--no-download-check

Skip all download confirmation prompts

[!IMPORTANT] Svelte maintainers have not reviewed community add-ons for malicious code. Use at your discretion

--install <package-manager>

Installs dependencies with a specified package manager:

• npm
• pnpm
• yarn
• bun
• deno

--no-install

Prevents installing dependencies

Official add-ons

• better-auth
• devtools-json
• drizzle
• eslint
• mcp
• mdsvex
• paraglide
• playwright
• prettier
• storybook
• sveltekit-adapter
• tailwindcss
• vitest

Community add-ons

Community add-ons are currently experimental. The API may change. Don't use them in production yet!

Svelte maintainers have not reviewed community add-ons for malicious code!

Community add-ons are npm packages published by the community. Look out for add-ons from your favourite libraries and tools. (soon) Many developers are building sv add-ons to make their integrations a one-liner. You can find them on npmx by searching for the keyword: sv-add.

Automatic discovery

Community add-ons installed in your project's node_modules or globally via npm i -g are automatically shown in the interactive selection prompt alongside official add-ons. Packages must have the sv-add keyword and sv as a peer dependency to be detected.

• [local] add-ons are found in the project's node_modules
• [global] add-ons are found in the global node_modules

Local add-ons skip the security warning since they are already part of your project.

Manual usage

# Install a community add-on by org name (it will look at @org/sv)
npx sv add @supacool

# Use a local add-on (for development or internal use)
npx sv add file:../path/to/my-addon

# Mix and match official and community add-ons
npx sv add eslint @supacool

# Also works when creating a new project directly
npx sv create --add eslint @supacool

On Windows PowerShell, @ is a special character that should be escaped with single quotes. For example: npx sv add '@supacool'.

Want to create your own? Check the Add-on Docs.