I'm pretty happy to share this; its based on a JSON validator I've been using for a long time. I reimplemented the technique in Python 3 for use with function

I'm pretty happy to share this; its based on a JSON validator I've been using for a long time. I reimplemented the technique in Python 3 for use with function annotations. Its inspired by Typescript; my ambition would be that its syntax is widely adopted and eventually static type checkers support it and IDEs can do auto-complete ala Typescript. Right now its a useful little runtime checker for you.