is Flutter Web reliable for production?

I've been search technology for build both mobile app and web just in one code and i found Flutter can do that. I know Flutter is new comers. But i want to know your thought about Flutter:

• How Stable (web)
• Documentation (web)
• Community (web)
• Performance (web)
• How it compare to other web technology
• Is there any other technology like flutter who can build mobile and web in one code?
• Your future prediction about flutter web
• how much would you give it a score (0/100)

I really appreciate all your thought. Thanks in advance...