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hyzhak/perf.js

Created November 9, 2018 09:18
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short but useful function to measure performance of function in node.js
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perf.js
function perf(fn) { console.time('x'); fn(); console.timeEnd('x');}
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hyzhak commented Nov 9, 2018

usage:

const I = require('immutable');
s1 = I.Set(I.Range(1, 1e5).map(_ => Math.floor(1e5 * Math.random())));
s2 = I.Set(I.Range(1, 1e5).map(_ => Math.floor(1e5 * Math.random())));
perf(() => s1.union(s2));

result:

x: 62.706ms

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