| 1 | function Time() {
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| 2 | this.times = {};
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| 3 | }
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| 4 |
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| 5 | Time.prototype.get = function (type) {
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| 6 | if (type) {
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| 7 | const duration = this.times[type] || [0, 0];
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| 8 | return (duration[1] || 0) - duration[0];
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| 9 | } else {
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| 10 | const children = Object.keys(this.times).map(key => ([key, this.get(key)]));
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| 11 | let total = 0;
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| 12 | children.forEach(child => {
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| 13 | total += child[1]
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| 14 | });
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| 15 | return {
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| 16 | total: total,
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| 17 | children: children
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| 18 | }
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| 19 | }
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| 20 | };
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| 21 |
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| 22 | Time.prototype.start = function (type) {
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| 23 | this.times[type] = [Date.now()];
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| 24 | };
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| 25 |
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| 26 | Time.prototype.end = function (type) {
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| 27 | this.times[type] = (this.times[type] || [0]).concat(Date.now());
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| 28 | };
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| 29 |
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| 30 |
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| 31 | exports = module.exports = Time;
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