# @sanity/eventsource

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Meta-package to make browsers and Node use different EventSource polyfills

```sh
npm install @sanity/eventsource
```

## Usage

```ts
import polyfilledEventSource from '@sanity/eventsource'
```

The polyfill adds support for auth headers, which isn't part of the EventSource spec.

In NodeJS environments it's the implementation from [eventsource](https://www.npmjs.com/package/eventsource) package. While browsers use [event-source-polyfill](https://www.npmjs.com/package/event-source-polyfill).

### Forcing a specific implementation

To get the browser implementation, no matter how your bundler or runtime understands `package.json` `exports`, you can use the following:

```ts
import polyfilledEventSource from '@sanity/eventsource/browser'
```

To force the Node implementation, use the following:

```ts
import polyfilledEventSource from '@sanity/eventsource/node'
```

## License

MIT © [Sanity.io](https://www.sanity.io/)

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