Web Reference: The onAfterSetupMiddleware deprecation warning is a common issue for projects running older versions of react-scripts or webpack-dev-server. The best and most direct solution for Create React App users is to upgrade the react-scripts package to version 5.0.1 or newer. Nov 1, 2021 ยท I upgraded from webpack dev server 3.11.2 to 4.4.0 and I get these deprecated warnings on npm run dev: (node:33156) [DEP_WEBPACK_DEV_SERVER_CONSTRUCTOR] DeprecationWarning: Using 'compiler' as the first argument is deprecated. If you're using dev-server through the Node.js API, the options in devServer will be ignored. Pass the options as the first parameter instead: new WebpackDevServer({...}, compiler).
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Nodejs Webpack Dev Server Deprecationwarning Net Worth 2026: Salary, Income & Wealth Net Worth & Biography

Estimated Worth: $79M - $102M
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Last Updated: April 10, 2026
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