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docs: clarify browser compatibility #19253

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docs: clarify browser compatibility #19253

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docs: clarify browser comaptibility
patak-dev Jan 21, 2025
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chore: update
patak-dev Jan 21, 2025
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9 changes: 7 additions & 2 deletions docs/guide/build.md
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Expand Up @@ -4,14 +4,19 @@ When it is time to deploy your app for production, simply run the `vite build` c

## Browser Compatibility

The production bundle assumes support for modern JavaScript. By default, Vite targets browsers which support the [native ES Modules](https://caniuse.com/es6-module), [native ESM dynamic import](https://caniuse.com/es6-module-dynamic-import), and [`import.meta`](https://caniuse.com/mdn-javascript_operators_import_meta):
By default, the production bundle assumes support for modern JavaScript, including [native ES Modules](https://caniuse.com/es6-module), [native ESM dynamic import](https://caniuse.com/es6-module-dynamic-import), and [`import.meta`](https://caniuse.com/mdn-javascript_operators_import_meta). The default browser support range is:

- Chrome >=87
- Firefox >=78
- Safari >=14
- Edge >=88

You can specify custom targets via the [`build.target` config option](/config/build-options.md#build-target), where the lowest target is `es2015`.
You can specify custom targets via the [`build.target` config option](/config/build-options.md#build-target), where the lowest target is `es2015`. If a lower target is set, Vite will still require these minimum browser support ranges as it relies on [native ESM dynamic import](https://caniuse.com/es6-module-dynamic-import) and [`import.meta`](https://caniuse.com/mdn-javascript_operators_import_meta):

- Chrome >=64
- Firefox >=67
- Safari >=11.1
- Edge >=79

Note that by default, Vite only handles syntax transforms and **does not cover polyfills**. You can check out https://cdnjs.cloudflare.com/polyfill/ which automatically generates polyfill bundles based on the user's browser UserAgent string.

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