Debug Why React (Re-)Renders a Component

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  • why-did-you-render

    why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)

  • To debug why a hook caused a React component to render we can use the npm package Why Did You Render.

  • React

    The library for web and native user interfaces.

  • React is known for its performance by using the Virtual DOM (VDOM). It only triggers an update for the parts of the real DOM that have changed. In my opinion, it is important to know when React triggers a re-rendering of a component to be able to debug performance issues and develop fast and efficient components.

  • 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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