npx shadcn@latest add https://ui.elixirlabs.in/r/on-this-page.json

import { OnThisPage } from "@/components/on-this-page";

<OnThisPage
    label="On this page"
    items={[
        { id: "getting-started", label: "Getting Started", level: 1 },
        { id: "project-setup", label: "Project Setup", level: 1 },
        { id: "environment-variables", label: "Environment Variables", level: 2 },
        { id: "authentication-flow", label: "Authentication Flow", level: 1 },
        ...
    ]}
/>

<OnThisPage
    variant="bullet" // "none" | "bullet"
/>