40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
import Link, { LinkProps } from 'next/link';
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import { useRouter } from 'next/router';
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import { PropsWithChildren, memo, useEffect, useState } from 'react';
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type ActiveLinkProps = LinkProps & {
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className?: string;
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activeClassName: string;
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};
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const ActiveLink = ({ children, activeClassName, className, ...props }: PropsWithChildren<ActiveLinkProps>) => {
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const { asPath, isReady } = useRouter();
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const [computedClassName, setComputedClassName] = useState(className);
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useEffect(() => {
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// Check if the router fields are updated client-side
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if (isReady) {
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// Dynamic route will be matched via props.as
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// Static route will be matched via props.href
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const linkPathname = new URL((props.as || props.href) as string, location.href).pathname;
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// Using URL().pathname to get rid of query and hash
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const activePathname = new URL(asPath, location.href).pathname;
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const newClassName = linkPathname === activePathname ? `${className} ${activeClassName}`.trim() : className;
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if (newClassName !== computedClassName) {
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setComputedClassName(newClassName);
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}
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}
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}, [asPath, isReady, props.as, props.href, activeClassName, className, computedClassName]);
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return (
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<Link className={computedClassName} {...props}>
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{children}
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</Link>
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);
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};
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export default memo(ActiveLink);
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