javascript - How to hide componentWillMount warnings

Question

I'm getting four big warnings that can not be minimized in my console. These warnings are from what I understand not because I have done anything wrong, but because react-router-dom and react-select use the deprecated componentWillMount function. How do I get rid of the warnings?

I have tried looking up the problem on this site, but the closest to a solution I have found is https://stackoverflow.com/a/49166225/12057512. Since the answer is from over a year ago I am wondering if this is still the case. Have these big/popular npm packages still not updated since then?

This is one of the warnings I get (the others are similar):

react-dom.development.js:11494 Warning: componentWillMount has been renamed, and is not recommended for use. See https:// fb . me/react-async-component-lifecycle-hooks for details.

• Move code with side effects to componentDidMount, and set initial state in the constructor.
• Rename componentWillMount to UNSAFE_componentWillMount to suppress this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. To rename all deprecated lifecycles to their new names, you can run npx react-codemod rename-unsafe-lifecycles in your project source folder.

Please update the following components: BrowserRouter, Route, Router, Switch

(I actually tried to run "npx react-codemod rename-unsafe-lifecycles" but it made no difference)

I have no control over how these npm packages work internally, so I find it frustrating that I constantly get these warnings that I can not fix or remove.

Answer 1

The common way to fix this would be to update the affected libraries (as you say react-router and react-select). If these are being maintained, then they would release new versions that don't produce these warnings. If that is not an option for you, then I don't know, I don't think React has a way of suppressing specific warnings.

Note that the warnings are only shown in the dev build of React, they won't be shown in the production build of React (see DOCs).