Run results for: MDS Test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser: Chrome 68

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Old	1422279.0 Ops/sec
New	1321764.0 Ops/sec

Script Preparation code:

var line = 'LSD|*|1|*|4185|*|4185|*|487|*|1337|*|Metabolic Disease Enzyme Replacement, Severe Comb Immune Def*~*'
var nthIndex = function(str, pat, n) {
	var i;
  for (i = 0; n > 0 && i !== -1; n -= 1) {
		i = str.indexOf(pat, i ? (i + 1) : i);
  }
  return i;
};

Tests:

Old
var parsedLine = line.substring(line.indexOf('|*|', (line.indexOf('|*|') + 3)) + 3).replace(/\\/g, '') return parsedLine;
New
var parsedLine = line.substring(nthIndex(line, '|*|', 2) + 3).replace(/\\/g, '') return parsedLine;

Testing Parser Performance

Old

New