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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Just for guys like you: Take a look at my restfuncs library or another nextgen RCP library then. So i tell you the code and time saving benefits straight upfront:
I think you shouldn't write you core logic inside any of these frameworks. Write the business logic in your own preferred way, I use TypeScript classes and reference these in whatever web framework you want to use, be it core http, express, fastly, socket.io, grpc, etc. Makes it easy to support different transports and makes upgrading frameworks a walk in the park.