validation/jwt_structure_utils library
JWT structural checks (no crypto) — roadmap #688.
Functions
-
isJwtStructure(
String token) → bool -
Returns true if
tokenlooks like a JWT (three base64url parts separated by .). -
jwtPayload(
String token) → Map< String, Object?> ? - Decodes payload (middle part) as JSON map; returns null if invalid.