Function ariaCurrent

ariaCurrent(pathname: string | null, href: string): "false" | "page" | "true"
Determines the appropriate aria-current value for a link href against the current pathname.

Returns "page" for exact matches, "true" for child routes (for example /about/team under /about), and "false" otherwise. Trailing slashes are normalized (except for root /).
Parameters
- pathname: string | null
  Current route pathname to test, or null for "false".
- href: string
  Link href to compare against; trailing slashes are normalized (except root /).
Returns "false" | "page" | "true"
"page" for an exact match, "true" when pathname is a child route of href, otherwise "false".
See
https://www.w3.org/TR/wai-aria-1.2/#aria-current
Example
```
ariaCurrent("/about", "/about"); // "page"
ariaCurrent("/about/team", "/about"); // "true"
ariaCurrent("/about-us", "/about"); // "false" (prefix match, not a child route)
ariaCurrent("/contact", "/about"); // "false"
ariaCurrent(null, "/about"); // "false"
```
- Defined in dom.ts:355