import { THEME_STORAGE_KEY } from './theme-provider';
/**
* Returns a string containing an IIFE to inject in the document ``
* before any styles or React code loads. It reads the stored theme
* preference (or falls back to prefers-color-scheme) and sets
* `data-theme` on `` synchronously, so consumers never see a
* flash of the wrong theme before ThemeProvider hydrates.
*
* Usage (Next.js, Astro, Remix, or hand-rolled SSR):
*
*
*
*
*
* The script is intentionally small (<500 bytes) so it doesn't hurt LCP.
*/
export function getThemeFoucScript(storageKey: string = THEME_STORAGE_KEY): string {
// The script body is a single expression so a minifier can inline it verbatim.
// It deliberately avoids optional chaining and nullish coalescing to stay
// compatible with older SSR targets that don't transpile inline