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routing-controllers
Create structured, declarative and beautifully organized class-based controllers with heavy decorators usage in Express / Koa using TypeScript and Routing Controllers Framework.
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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.
There's two underlying packages, one for either HTTP adapter, @nestjs/platform-express and @nestjs/platfoorm-fastify. Both of these have HttpAdapter classes that implement the abstract HttpAdapter that Nest uses as a main interface. Nest doesn't actually need the adapters to run either, you can make a microservice application that doesn't have any HTTP components, or even CLI applications with community packages (disclaimer: that one is mine). Nest is really there to help provide the modular system and help with architecture (in my opinion).
If I don’t want to use nest then I would use express or koa with routing-controllers. Using this package you can write controllers with classes and decorators which is similar to nest js. There are a lot of other features too.