front-matter-delim-parsing

index.js

var Benchmark = require('benchmark');

var re = /^---\r?\n/;
var text = '---\r\nsomeotherpartofthestring';
var suite = new Benchmark.Suite;

suite.add('String.prototype.indexOf()', function() {
	return (text.indexOf('---\n') !== -1) ||
		(text.indexOf('---\r\n') !== -1);
});

suite.add('String.prototype.test()', function() {
	return re.test(text);
});

suite.add('String.prototype.search()', function() {
	return text.search(re);
});

suite.on('cycle', function(e) {
	console.log(String(e.target));
});

suite.on('complete', function() {
	console.log(' ');
});

suite.run();

package.json

{
  "name": "strop-perf-fm",
  "version": "0.0.1",
  "description": "front-matter-delim-parsing",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "benchmark": "node index.js >> results.txt || true"
  },
  "author": "axdg <axdg@dfant.asia>",
  "license": "MIT",
  "dependencies": {
    "benchmark": "^2.1.0"
  }
}

results.txt

String.prototype.indexOf() x 6,081,685 ops/sec ±2.25% (76 runs sampled)
String.prototype.test() x 14,902,837 ops/sec ±2.11% (75 runs sampled)
String.prototype.search() x 10,944,121 ops/sec ±4.30% (70 runs sampled)