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dhh merged 1 commit into from
Mar 3, 2024
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Add how to support legacy browsers to README #249

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9 changes: 9 additions & 0 deletions README.md
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Expand Up @@ -242,6 +242,15 @@ Importmap for Rails provides two commands to check your pinned packages:
- `./bin/importmap outdated` checks the NPM registry for new versions
- `./bin/importmap audit` checks the NPM registry for known security issues

## Supporting legacy browsers such as Safari on iOS 15

If you want to support [legacy browsers that do not support import maps](https://caniuse.com/import-maps) such as [iOS 15.8.1 released on 22 Jan 2024](https://support.apple.com/en-us/HT201222), insert [`es-module-shims`](https://github.com/guybedford/es-module-shims) before `javascript_importmap_tags` as below.

```erb
<script async src="https://ga.jspm.io/npm:[email protected]/dist/es-module-shims.js" data-turbo-track="reload"></script>
<%= javascript_importmap_tags %>
```

## License

Importmap for Rails is released under the [MIT License](https://opensource.org/licenses/MIT).