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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.
Oh yeah, in that sense it's even easier because you can just run scripts. Kinda like python. You can install tsx to run typescript files directly. For dependency management I use pnpm, which also comes with a workspace feature for linking dependencies in one monorepo. For compiling I like esbuild because of it's speed, though it doesn't do type checking
Based on your description and responses to other comments it looks like you are in the market for what Vercel is doing these days. Check out Next.js with Turborepo
https://rushjs.io/ and https://rushstack.io/