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37 lines
1.2 KiB
JavaScript
37 lines
1.2 KiB
JavaScript
/**
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* Copyright 2013 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @providesModule forEachAccumulated
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*/
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"use strict";
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/**
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* @param {array} an "accumulation" of items which is either an Array or
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* a single item. Useful when paired with the `accumulate` module. This is a
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* simple utility that allows us to reason about a collection of items, but
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* handling the case when there is exactly one item (and we do not need to
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* allocate an array).
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*/
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var forEachAccumulated = function(arr, cb, scope) {
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if (Array.isArray(arr)) {
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arr.forEach(cb, scope);
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} else if (arr) {
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cb.call(scope, arr);
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}
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};
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module.exports = forEachAccumulated;
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