/
ActiveLink.tsx
58 lines (50 loc) · 1.4 KB
/
ActiveLink.tsx
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import { useRouter } from 'next/router'
import Link, { LinkProps } from 'next/link'
import React, { PropsWithChildren, useState, useEffect } from 'react'
type ActiveLinkProps = LinkProps & {
className?: string
activeClassName: string
}
const ActiveLink = ({
children,
activeClassName,
className,
...props
}: PropsWithChildren<ActiveLinkProps>) => {
const { asPath, isReady } = useRouter()
const [computedClassName, setComputedClassName] = useState(className)
useEffect(() => {
// Check if the router fields are updated client-side
if (isReady) {
// Dynamic route will be matched via props.as
// Static route will be matched via props.href
const linkPathname = new URL(
(props.as || props.href) as string,
location.href
).pathname
// Using URL().pathname to get rid of query and hash
const activePathname = new URL(asPath, location.href).pathname
const newClassName =
linkPathname === activePathname
? `${className} ${activeClassName}`.trim()
: className
if (newClassName !== computedClassName) {
setComputedClassName(newClassName)
}
}
}, [
asPath,
isReady,
props.as,
props.href,
activeClassName,
className,
computedClassName,
])
return (
<Link className={computedClassName} {...props}>
{children}
</Link>
)
}
export default ActiveLink