25 lines
459 B
JavaScript
25 lines
459 B
JavaScript
function createMutex(doWork) {
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const mutex = {}
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return function(key, payload, callback) {
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if (mutex[key]) {
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mutex[key].push(callback)
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} else {
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mutex[key] = [
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function() {
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delete mutex[key]
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},
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callback
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]
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doWork(payload, function(error, value) {
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mutex[key].forEach(function(callback) {
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callback(error, value)
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})
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})
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}
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}
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}
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module.exports = createMutex
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