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@@ -1,6 +1,8 @@
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import React from 'react';
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+import { useIsomorphicLayoutEffect } from 'usehooks-ts';
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+
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type Props = {
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children: JSX.Element,
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className: string,
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@@ -9,6 +11,17 @@ type Props = {
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export const ThemeInjector = ({ children, className: themeClassName, bgImageNode }: Props): JSX.Element => {
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const className = `${children.props.className ?? ''} ${themeClassName}`;
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+
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+ // add class name to <body>
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+ useIsomorphicLayoutEffect(() => {
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+ document.body.classList.add(themeClassName);
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+
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+ // clean up
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+ return () => {
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+ document.body.classList.remove(themeClassName);
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+ };
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+ });
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+
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return React.cloneElement(children, { className }, [
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<div key="grw-bg-image-wrapper" className="grw-bg-image-wrapper">{bgImageNode}</div>,
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children.props.children,
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Yuki Takei