45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
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/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @providesModule someObject
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* @flow
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* @typechecks
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*/
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'use strict';
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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/**
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* Executes the provided `callback` once for each enumerable own property in the
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* object until it finds one where callback returns a truthy value. If such a
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* property is found, `someObject` immediately returns true. Otherwise, it
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* returns false.
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*
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* The `callback` is invoked with three arguments:
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*
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* - the property value
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* - the property name
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* - the object being traversed
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*
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* Properties that are added after the call to `someObject` will not be
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* visited by `callback`. If the values of existing properties are changed, the
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* value passed to `callback` will be the value at the time `someObject`
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* visits them. Properties that are deleted before being visited are not
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* visited.
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*/
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function someObject(object: ?Object, callback: (value: any, name: string, object: Object) => any, context?: any): boolean {
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for (var name in object) {
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if (hasOwnProperty.call(object, name)) {
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if (callback.call(context, object[name], name, object)) {
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return true;
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}
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}
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}
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return false;
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}
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module.exports = someObject;
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