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45 lines
1.3 KiB
45 lines
1.3 KiB
/** |
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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 everyObject |
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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 falsy value. If such a |
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* property is found, `everyObject` immediately returns false. Otherwise, it |
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* returns true. |
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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 `everyObject` 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 `everyObject` |
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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 everyObject(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 false; |
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} |
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} |
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} |
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return true; |
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} |
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module.exports = everyObject; |