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onRenderBody.js
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onRenderBody.js
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import React from 'react';
const onRenderBody = ({ setHeadComponents }) => {
const initializeTheme = `
(function() {
try {
const savedTheme = localStorage.getItem('selected_theme');
if (savedTheme) {
document.documentElement.dataset.theme = savedTheme;
} else if (
window.matchMedia &&
window.matchMedia('(prefers-color-scheme: dark)').matches
) {
document.documentElement.dataset.theme = 'dark';
}
} catch (e) {}
})();
`;
setHeadComponents([
<script
key="initialize-theme"
dangerouslySetInnerHTML={{
__html: initializeTheme,
}}
/>,
]);
};
export default onRenderBody;