21 lines
588 B
Markdown
21 lines
588 B
Markdown
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# Improper webpack `devtool` used in development mode
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#### Why This Error Occurred
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Next.js chooses the most optimal `devtool` for use with webpack. Changing the `devtool` in development mode will cause severe performance regressions with your application.
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#### Possible Ways to Fix It
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Please remove the custom `devtool` override or only apply it to production builds in your `next.config.js`.
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```js
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module.exports = {
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webpack: (config, options) => {
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if (!options.dev) {
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config.devtool = options.isServer ? false : 'your-custom-devtool'
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}
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return config
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},
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}
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```
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