'use strict'; const common = require('../common.js'); const path = require('path'); const bench = common.createBenchmark(main, { path: [ '', '\\', '\\foo', 'C:\\foo\\bar', 'foo', 'foo\\bar', 'D:\\foo\\bar\\baz\\asdf\\quux' ], n: [1e6] }); function main(conf) { const n = +conf.n; const p = path.win32; const input = String(conf.path); bench.start(); for (var i = 0; i < n; i++) { p.dirname(input); } bench.end(n); }