Function parseCallbackUrl

parseCallbackUrl(
url: string | URL,
options: ParseCallbackUrlOptions,
): CallbackParams
Read the authorization code out of the URL Atlassian redirected the user to.

Handles the three ways this step goes wrong, each of which is easy to forget by hand:
- The user declined on the consent screen, so the URL carries error=access_denied and no code;
- state is missing or does not match the one you issued;
- The URL is simply not a callback — no code, no error.
Each throws an OAuthError; for a decline, error is access_denied, which isReauthorizationRequired recognises.
Parameters
- url: string | URL
- options: ParseCallbackUrlOptions
Returns CallbackParams
Example
```
  const { code } = parseCallbackUrl(request.url, { expectedState: session.oauthState });

  const tokens = await exchangeAuthorizationCode({ clientId, clientSecret, code, redirectUri });
  
```
- Defined in src/core/oauth/parseCallbackUrl.ts:54