Files
react-native/packages/react-native/Libraries/Utilities/__mocks__/BackHandler.js
T
D N 44d619414c fix: Remove BackHandler.removeEventListener (#45892)
Summary:
All `removeEventListener` methods was removed  https://github.com/facebook/react-native/commit/2596b2f6954362d2cd34a1be870810ab90cbb916 perviously  but seems a `BackHandler` was missed

This can be a breaking change for some third-party modules.

**Migration**: Use `remove` on the EventSubscription from `addEventListener`:

```diff
useEffect(()=>{
+  const subscription = NativeModule.removeListener(name, listener);
+  return ()=>subscription.remove();
},[])
```

## Changelog:

[GENERAL] [REMOVED] - Remove `BackHandler.removeEventListener`

Pull Request resolved: https://github.com/facebook/react-native/pull/45892

Test Plan: ...

Reviewed By: huntie

Differential Revision: D65663591

Pulled By: javache

fbshipit-source-id: 01b804cd6ec77ea4916a0ced7fee551d045f1684
2024-11-09 15:56:44 -08:00

46 lines
953 B
JavaScript

/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
*/
'use strict';
const _backPressSubscriptions = new Set();
const BackHandler = {
exitApp: jest.fn(),
addEventListener: function (
eventName: BackPressEventName,
handler: () => ?boolean,
): {remove: () => void} {
_backPressSubscriptions.add(handler);
return {
remove: () => {
_backPressSubscriptions.delete(handler);
},
};
},
mockPressBack: function () {
let invokeDefault = true;
const subscriptions = [..._backPressSubscriptions].reverse();
for (let i = 0; i < subscriptions.length; ++i) {
if (subscriptions[i]()) {
invokeDefault = false;
break;
}
}
if (invokeDefault) {
BackHandler.exitApp();
}
},
};
module.exports = BackHandler;