Benchmark with repeat and without

repeat.js

const Benchmark = require('benchmark');
const suite = new Benchmark.Suite;

suite.add('Without repeat', function() {
  const fiveLine = (s) => {
    s = s.trim();
    return `${s}\n${s}${s}\n${s}${s}${s}\n${s}${s}${s}${s}\n${s}${s}${s}${s}${s}`;
  }

  fiveLine('sdfdsfsd')
  fiveLine('   sdfdsfsdS sas asdas asaa      ')
  fiveLine('   sdfdsfsdS sas asdas asaa ')
  fiveLine(' sdfdsfsdS sas asdas asaa      ')
})
.add('With repeat', function() {
  const fiveLine = (s) => {
    s = s.trim();
    return `${s.repeat(1)}\n${s.repeat(2)}\n${s.repeat(3)}\n${s.repeat(4)}\n${s.repeat(5)}`
  }

  fiveLine('sdfdsfsd')
  fiveLine('   sdfdsfsdS sas asdas asaa      ')
  fiveLine('   sdfdsfsdS sas asdas asaa ')
  fiveLine(' sdfdsfsdS sas asdas asaa      ')
})
// add listeners
.on('cycle', function(event) {
  console.log(String(event.target));
})
.on('complete', function() {
  console.log('Fastest is ' + this.filter('fastest').map('name'));
})
// run async
.run({ 'async': true });