37 lines
939 B
TypeScript
37 lines
939 B
TypeScript
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import Head from "next/head";
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import { useEffect, useState } from "react";
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import { Maybe } from "@trpc/server";
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// makes sure the ui doesn't flash
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export default function useTheme(theme?: Maybe<string>) {
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const [isReady, setIsReady] = useState(false);
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useEffect(() => {
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setIsReady(true);
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}, []);
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function Theme() {
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const themeString = theme ? `"${theme}"` : null;
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return (
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<Head>
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<script
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dangerouslySetInnerHTML={{
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__html: `(function (theme) {
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if (!theme && window.matchMedia("(prefers-color-scheme: dark)").matches) {
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document.documentElement.classList.add("dark");
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} else if (!theme) {
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/** Uncovered case */
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} else {
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document.documentElement.classList.add(theme);
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}
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})(${themeString})`,
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}}></script>
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</Head>
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);
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}
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return {
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isReady,
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Theme,
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};
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}
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