37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
# Opt-out of Automatic Static Optimization
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#### Why This Warning Occurred
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You are using `getInitialProps` in your [Custom `<App>`](https://nextjs.org/docs/advanced-features/custom-app).
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This causes **all non-getStaticProps pages** to be executed on the server -- disabling [Automatic Static Optimization](https://nextjs.org/docs/advanced-features/automatic-static-optimization).
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#### Possible Ways to Fix It
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Be sure you meant to use `getInitialProps` in `pages/_app`!
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There are some valid use cases for this, but it is often better to handle `getInitialProps` on a _per-page_ basis.
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Check for any [higher-order components](https://reactjs.org/docs/higher-order-components.html) that may have added `getInitialProps` to your [Custom `<App>`](https://nextjs.org/docs/advanced-features/custom-app).
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If you previously copied the [Custom `<App>`](https://nextjs.org/docs/advanced-features/custom-app) example, you may be able to remove your `getInitialProps`.
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The following `getInitialProps` does nothing and may be removed:
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```js
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class MyApp extends App {
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// Remove me, I do nothing!
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static async getInitialProps({ Component, ctx }) {
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let pageProps = {}
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if (Component.getInitialProps) {
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pageProps = await Component.getInitialProps(ctx)
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}
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return { pageProps }
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}
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render() {
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// ...
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}
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}
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```
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