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Quick start ​

Scaffold a project ​

bash
npm create continuum-js@latest my-app
cd my-app
npm install
npm run dev

You get a Vite + TypeScript project:

my-app/
├─ index.html
├─ vite.config.ts
├─ tsconfig.json          # jsx: react-jsx, jsxImportSource: @continuum-js/dom
└─ src/
   ├─ main.tsx            # mount(document.getElementById("app")!, () => <App />)
   ├─ App.tsx             # a counter to delete
   └─ App.test.tsx        # a vitest test to keep you honest

npm run build type-checks and bundles; npm test runs vitest.

Add to an existing Vite project ​

bash
npm i @continuum-js/frp @continuum-js/dom @continuum-js/std

Point JSX at the Continuum runtime in tsconfig.json:

json
{
  "compilerOptions": {
    "jsx": "react-jsx",
    "jsxImportSource": "@continuum-js/dom"
  }
}

Mount a view:

tsx
import { mount } from "@continuum-js/dom";

mount(document.getElementById("app")!, () => <App />);

mount returns an unmount function that disposes the whole subtree — subscriptions, timers, DOM.

First edit ​

Open src/App.tsx and make the counter count double:

tsx
const count = state(0);
const doubled = count.map((n) => n * 2);

Put {doubled} anywhere in the JSX. Notice what you didn't do: no dependency array, no memo, no re-render — doubled is derived from count by construction.

Next ​