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29 lines
796 B
29 lines
796 B
'use strict'; |
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module.exports = asyncForEach; |
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/** |
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* Simultaneously processes all items in the given array. |
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* |
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* @param {array} array - The array to iterate over |
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* @param {function} iterator - The function to call for each item in the array |
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* @param {function} done - The function to call when all iterators have completed |
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*/ |
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function asyncForEach (array, iterator, done) { |
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if (array.length === 0) { |
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// NOTE: Normally a bad idea to mix sync and async, but it's safe here because |
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// of the way that this method is currently used by DirectoryReader. |
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done(); |
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return; |
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} |
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// Simultaneously process all items in the array. |
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let pending = array.length; |
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array.forEach(item => { |
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iterator(item, () => { |
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if (--pending === 0) { |
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done(); |
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} |
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}); |
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}); |
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}
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