RegExp Methods

results.md

browser	regexp	method	time
Chrome	/)|/	exec	: 6.9599609375ms
Chrome	/)|/	[Symbol.search]	6.98681640625ms
Chrome	/)(?=|)/	exec	5.283203125ms
Chrome	/)(?=|)/	[Symbol.search]	4.552001953125ms
Chrome	/(?=)|)./	exec	4.844970703125ms
Chrome	/(?=)|)./	[Symbol.search]	5.030029296875ms
Chrome	/(?=)|)/	exec	4.688232421875ms
Chrome	/(?=)|)/	[Symbol.search]	4.72802734375ms
Chrome	/)|/	exec	6.59814453125ms
Chrome	/)|/	[Symbol.search]	6.81494140625ms
Chrome	/)(?=|)/	exec	4.62109375ms
Chrome	/)(?=|)/	[Symbol.search]	5.244873046875ms
Chrome	/(?=)|)./	exec	4.68994140625ms
Chrome	/(?=)|)./	[Symbol.search]	4.987060546875ms
Chrome	/(?=)|)/	exec	4.8359375ms
Chrome	/(?=)|)/	[Symbol.search]	4.64697265625ms

browser	regexp	method	time
Safari	/)|/	exec	11.622ms
Safari	/)|/	[Symbol.search]	12.410ms
Safari	/)(?=|)/	exec	11.758ms
Safari	/)(?=|)/	[Symbol.search]	14.328ms
Safari	/(?=)|)./	exec	14.693ms
Safari	/(?=)|)./	[Symbol.search]	13.624ms
Safari	/(?=)|)/	exec	11.157ms
Safari	/(?=)|)/	[Symbol.search]	11.330ms
Safari	/)|/	exec	9.926ms
Safari	/)|/	[Symbol.search]	8.585ms
Safari	/)(?=|)/	exec	9.450ms
Safari	/)(?=|)/	[Symbol.search]	10.328ms
Safari	/(?=)|)./	exec	13.013ms
Safari	/(?=)|)./	[Symbol.search]	12.637ms
Safari	/(?=)|)/	exec	10.045ms
Safari	/(?=)|)/	[Symbol.search]	10.953ms

browser	regexp	method	time
Firefox	/)|/	exec	6ms
Firefox	/)|/	[Symbol.search]	6ms
Firefox	/)(?=|)/	exec	5ms
Firefox	/)(?=|)/	[Symbol.search]	4ms
Firefox	/(?=)|)./	exec	4ms
Firefox	/(?=)|)./	[Symbol.search]	20ms
Firefox	/(?=)|)/	exec	5ms
Firefox	/(?=)|)/	[Symbol.search]	5ms
Firefox	/)|/	exec	6ms
Firefox	/)|/	[Symbol.search]	4ms
Firefox	/)(?=|)/	exec	5ms
Firefox	/)(?=|)/	[Symbol.search]	5ms
Firefox	/(?=)|)./	exec	4ms
Firefox	/(?=)|)./	[Symbol.search]	5ms
Firefox	/(?=)|)/	exec	4ms
Firefox	/(?=)|)/	[Symbol.search]	5ms

script.js

(({m = ['exec', Symbol.search], s = 'abc(def)', r = [/\)\|/, /\)(?=\|)/, /(?=\)\|)./, /(?=\)\|)/], c = 1000, n, v, k, i, o, t, a} = {}, {time, timeEnd} = console) => {
  o = {};
  [a] = /chrome|safari|firefox|node/i.exec(this && this.navigator && this.navigator.userAgent || (typeof process === 'object' && 'Node'));
  for (const rx of r.concat(r)) {
    for (const mx of m) {
      n = c; i = 0;
      if (!rx[mx] || !(k = `| ${a} | ${rx}${rx.flags} | ${rx[mx].name} |`)) continue;
      let r = new RegExp(rx.source, rx.flags);
      time(k);
      while (n--) (v = r[mx](`${s.repeat(i++)}|`));
      timeEnd(k); o[k] = {s, r: rx, i, v};
    }
  }
  return o;})({n: 5000})