token=<token> query ONLY on the funnel deep-link host
(…onboarding-complete…) so an unrelated deep link's generic token= is
not mistaken for a funnel token.
Returns null for any non-funnel URL. Does not use the URL constructor
(unreliable for custom schemes in RN/Hermes).
Extract a funnel token from a deep link / Universal Link. Recognises:
…/funnels/open/<token>rovenue_funnel_token=<token>query (anywhere — Rovenue-specific key)token=<token>query ONLY on the funnel deep-link host (…onboarding-complete…) so an unrelated deep link's generictoken=is not mistaken for a funnel token. Returns null for any non-funnel URL. Does not use theURLconstructor (unreliable for custom schemes in RN/Hermes).