--- ## Development Pull requests are encouraged and always welcome. [Pick an issue](https://github.com/sveltejs/svelte/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc) and help us out! To install and work on Svelte locally: ```bash git clone git@github.com:sveltejs/svelte.git cd svelte npm install npm run dev ``` The compiler is written in [TypeScript](https://www.typescriptlang.org/), but don't let that put you off — it's basically just JavaScript with type annotations. You'll pick it up in no time. If you're using an editor other than [VSCode](https://code.visualstudio.com/) you may need to install a plugin in order to get syntax highlighting and code hints etc. ### Running Tests ```bash npm run test ``` For running single tests, you can use pattern matching. For example, to run all the tests involving transitions: ```bash npm run test -- -g transition ``` ## License [MIT](LICENSE)