DataSaverToggle

SM, under 950B gzipped

A manual override for the library's constrained-connection behaviour.

Category: Accessibility & preferences
Budget: sm, single-purpose control
Runtime deps: None

Preview

Data saver

This is the exact fixture the conformance suite renders in CI. Switch the language to see the component mirror and reformat.

Install

npx shadcn@latest add https://kata-ui-rho.vercel.app/r/data-saver-toggle.json

Copies the source into your project. Pulls in 3 primitives: switch, cn, use-stored-value.

Source

"use client";

import { useStoredValue } from "../lib/use-stored-value";
import { Switch } from "./switch";

const STORAGE_KEY = "anywhere-ui:force-data-saver";

/**
 * Lets someone opt into the library's constrained-connection behaviour
 * manually — useful on an unmetered fast connection where the person still
 * wants to save data by choice, which `useNetwork`'s automatic detection has
 * no way to know about. Setting this overrides `useNetwork().constrained`
 * to `true` regardless of the measured connection; see its docs for wiring.
 */
export function DataSaverToggle({ label = "Data saver" }: { label?: string }) {
  const [stored, setStored] = useStoredValue(STORAGE_KEY, "false");
  const forced = stored === "true";

  return <Switch checked={forced} onCheckedChange={(v) => setStored(String(v))} label={label} />;
}

What CI checks

Bundled, minified and gzipped against its tier budget
Audited by axe in the state previewed above
Rendered through react-dom/server with no browser globals
Scanned for network calls, dangerous sinks, and unguarded animation

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