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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.
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We’ve been busy here at Simply Stated. We’re still building Omniscient XState Observability but it’s now part of a much more ambitious project. We’ll talk more about our expanded vision soon but we thought it would be fun to share some details about an interesting architecture we’ve been working on in the meantime.
The high-level scheme We will take a Replicache-like approach of encoding mutations as data (similar to a redux action). On the client, we’ll compute our current state by applying all local mutations to the canonical data we last received from the server. We’ll send a batch of mutations to the server, where the server will decide how to apply them to the now-current canonical data, which may differ from what the client believed to be the canonical data when it applied those mutations. The server-side application of a particular mutation might not result in the same state as the optimistic, client-side application of that mutation and that’s ok! The mutation logic will handle our conflict resolution. After the server applies mutations, it will send the client back the new state and the ID of the latest mutation it applied. The client can then update its canonical state and apply all local mutations after the latest mutation included in the canonical state.
A major thank you to Replicache, Figma, and, as usual, Rich Hickey, this time with Datomic for sharing their thinking about similar problem spaces.