21 lines
359 B
JavaScript
21 lines
359 B
JavaScript
module.exports = function (limit) {
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limit = limit || 1;
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var queue=[], wip=0;
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function toAdd(fn) {
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queue.push(fn) > 1 || run(); // initializes if 1st
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}
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function isDone() {
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wip--; // make room for next
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run();
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}
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function run() {
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if (wip < limit && queue.length > 0) {
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queue.shift()(); wip++; // is now WIP
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}
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}
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return [toAdd, isDone];
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}
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