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.
surveyjs.io
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power-assert
Power Assert in JavaScript. Provides descriptive assertion messages through standard assert interface. No API is the best API.
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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.
I recently stumbled upon power-assert library that deparses a false value and throws an exception with an explanation how it was evaluated (tutorial & playground included). I don't really understand how it works but perhaps one of its dependencies/components could do something similar to what you want.
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