react-native/Libraries/Components/AccessibilityInfo/AccessibilityInfo.android.js
Mats Byrkeland edb6ca72fd Fix ESLint warnings using 'yarn lint --fix'
Summary:
Hi! I would like to contribute to React Native, and I am just starting out. I forked the repo and found that it has quite a lot of ESLint warnings – many of which were automatically fixable. This PR is simply the result of running `yarn lint --fix` from the root folder.

Most changes are removing trailing spaces from comments.

Haven't really done any manual testing, since I haven't done any code changes manually. `yarn test` runs fine, `yarn flow` runs fine, `yarn prettier` is satisfied.

N/A

[INTERNAL][MINOR][] - Fix ESLint warnings
Closes https://github.com/facebook/react-native/pull/18047

Differential Revision: D7054948

Pulled By: hramos

fbshipit-source-id: d53e692698d1687de5821c3fb5cdb76a5e03b71e
2018-02-22 07:23:17 -08:00

75 lines
1.8 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @providesModule AccessibilityInfo
* @flow
*/
'use strict';
var NativeModules = require('NativeModules');
var RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
var RCTAccessibilityInfo = NativeModules.AccessibilityInfo;
var TOUCH_EXPLORATION_EVENT = 'touchExplorationDidChange';
type ChangeEventName = $Enum<{
change: string,
}>;
var _subscriptions = new Map();
/**
* Sometimes it's useful to know whether or not the device has a screen reader
* that is currently active. The `AccessibilityInfo` API is designed for this
* purpose. You can use it to query the current state of the screen reader as
* well as to register to be notified when the state of the screen reader
* changes.
*
* See http://facebook.github.io/react-native/docs/accessibilityinfo.html
*/
var AccessibilityInfo = {
fetch: function(): Promise {
return new Promise((resolve, reject) => {
RCTAccessibilityInfo.isTouchExplorationEnabled(
function(resp) {
resolve(resp);
}
);
});
},
addEventListener: function (
eventName: ChangeEventName,
handler: Function
): void {
var listener = RCTDeviceEventEmitter.addListener(
TOUCH_EXPLORATION_EVENT,
(enabled) => {
handler(enabled);
}
);
_subscriptions.set(handler, listener);
},
removeEventListener: function(
eventName: ChangeEventName,
handler: Function
): void {
var listener = _subscriptions.get(handler);
if (!listener) {
return;
}
listener.remove();
_subscriptions.delete(handler);
},
};
module.exports = AccessibilityInfo;