DVAccessTokenSupplier typedef

DVAccessTokenSupplier = Future<String> Function()

Supplies a short-lived OAuth2 access token for a push service.

Fetched per send so an expired token is never reused. Most applications do not write one: FirebasePushProvider.fromSecrets mints tokens from the service account in Secrets (DVGoogleAccessTokens).

Implementation

typedef DVAccessTokenSupplier = Future<String> Function();