chrono fast-check

const fc1 = require('[email protected]'); const fc2 = require('[email protected]'); const { performance } = require('perf_hooks'); const measurePerf = async (label, measure) => { const time1 = []; const time2 = []; for (let idx = 0 ; idx !== 10000 ; ++idx) { time1.push(await measure(fc1, idx)); time2.push(await measure(fc2, idx)); } console.log(label); console.log(time1.sort((a,b) => a-b)[5000]); console.log(time2.sort((a,b) => a-b)[5000]); } await measurePerf('synchronous property', (fc, seed) => { const start = performance.now(); fc.assert(fc.property(fc.nat(), fc.nat(), (a, b) => true), {seed}); return performance.now() - start; }); await measurePerf('asynchronous property', async (fc, seed) => { const start = performance.now(); await fc.assert(fc.asyncProperty(fc.nat(), fc.nat(), async (a, b) => true), {seed}); return performance.now() - start; });