config.devServer options ignored #199

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fergalmoran · 2025-08-09T17:15:23Z

fergalmoran commented

2025-08-09 17:15:23 +00:00

Originally created by @MJLHThomassen-Eurocom on 1/31/2018

When specifying devServer options in my webpack config, it looks like all these settings are ignored by app.UseWebpackDevMiddleware();

webpack.config.js example:

const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware');
const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware');
(...)

module.exports = {
(...)
    devServer: {
        before(app)
        {
            app.use(errorOverlayMiddleware());
            app.use(noopServiceWorkerMiddleware());
        }
    }
(...)
}

When running webpack via the command line, the error overlay middleware shows me runtime erros in file. When running integrated in my asp.net core app with app.UseWebpackDevMiddleware(); this does not work.

Are the devServer settings ignored? If so, is there a way to achieve setting things like devServer middleware a different way?

*Originally created by @MJLHThomassen-Eurocom on 1/31/2018* When specifying devServer options in my webpack config, it looks like all these settings are ignored by app.UseWebpackDevMiddleware(); webpack.config.js example: ``` const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware'); const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware'); (...) module.exports = { (...) devServer: { before(app) { app.use(errorOverlayMiddleware()); app.use(noopServiceWorkerMiddleware()); } } (...) } ``` When running webpack via the command line, the error overlay middleware shows me runtime erros in file. When running integrated in my asp.net core app with app.UseWebpackDevMiddleware(); this does not work. Are the devServer settings ignored? If so, is there a way to achieve setting things like devServer middleware a different way?

fergalmoran closed this issue

2025-08-09 17:15:23 +00:00

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Reference: github/JavaScriptServices#199