19 lines
776 B
Text
19 lines
776 B
Text
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---
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title: Parallel Build Without Build Worker
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---
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## Why This Error Occurred
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The `experimental.parallelServerCompiles` and `experimental.parallelServerBuildTraces`
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options require that the `experimental.webpackBuildWorker` option is set to `true`. These
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options use workers to improve the parallelization of the build which may improve performance,
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but the build may use more memory at the same time.
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## Possible Ways to Fix It
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Build workers are enabled by default unless you have a custom webpack config. You can force enable the option by setting `experimental.webpackBuildWorker: true` in your `next.config.js` file, but some webpack configuration options may not be compatible.
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## Useful Links
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Also see https://nextjs.org/docs/messages/webpack-build-worker-opt-out
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