Function makeSafeUrl

makeSafeUrl(
    urlString: string,
    locale: string,
    expectedOrigin: string,
): URL | null
Take the provided URL and make sure it can be parsed, it's of the expected origin, and has the specified locale.

If it can't be parsed or if it's not of the expected origin, return null. Setting URL to null will display an error message in the iframe
Parameters
- urlString: string
  The URL to make safe.
- locale: string
  The locale to use for the URL.
- expectedOrigin: string
  The expected origin of the URL.
Returns URL | null
The safe URL, or null if the URL is not safe.
- Defined in perseus-core/src/utils/make-safe-url.ts:13