Svelte powered three.js development Svelthree components' code is written in TypeScript. You can set up a new Svelte TypeScript project (official) like this: npx degitsveltejs/template my-svelthree-app cd my-svelthree-app node scripts/setupTypeScript.js npm install npm install svelthree --save-dev 🍦 You don't have to write TypeScript in order to use svelthree-components, change to and do it VanillaJS!

Jonas Luebbers
Source: svelthree