import BenchmarkRunner from 'simple-benchmarkjs-runner';
// or
var BenchmarkRunner = require('simple-benchmarkjs-runner');

import BenchmarkRunner from 'simple-benchmarkjs-runner';
import impl1 from './implementations/first';
import impl2 from './implementations/second';
 
new BenchmarkRunner({
  title: 'benchmark-suite-title',
  tests: [
    {
      title: 'Implementation 1',
      fn: impl1
    },
    {
      title: 'Implementation 2',
      fn: () => {
        impl2(someOtherData);
      }
    }
  ]
});

new BenchmarkRunner([
    {
        title: 'benchmark-suite-title',
        tests: [...]
    }, {
        title: 'another-benchmark-suite-title',
        tests: [...]
    }
]);