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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.
One of the most important and widely used Promise situations is data fetching. Doesn’t matter whether it’s the actual fetch call or some abstraction on top of it like axios, the Promise behavior is the same.
By the way, do you remember that scary warning “Can’t perform a React state update on an unmounted component”? It used to appear in exactly those situations: when an asynchronous operation like data fetching finishes after the component is gone already. “Used to”, since it’s gone as well. Was removed quite recently: Remove the warning for setState on unmounted components by gaearon · Pull Request #22114 · facebook/react. Quite an interesting read on the reasons for those who like to have all the details.