How do you validate the request body and query parameters?

• Yup

  113 22,201 7.1 TypeScript

  Dead simple Object schema validation

I prefer to use yup

• fluentvalidation-ts

  1 78 3.4 TypeScript

  A TypeScript-first library for building strongly-typed validation rules

If your needs are reasonably complex, I'd check out fluentvalidation-ts. Might be overkill for simple parameter validation but definitely useful to know about for bigger projects.

• SurveyJS

  surveyjs.io sponsored

  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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