Run results for: regexp vs split 6

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.99 Safari/537.36

Browser: Chrome 86

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
regexp	2226046.2 Ops/sec
split	1009309.8 Ops/sec
manual method	1366384.6 Ops/sec

Script Preparation code:

var fullAppName = 'vendor.appname@10.9.8'


function eatUntil(stopChar, str) {
  let result = ''
  for (let i = 0, len = str.length; i < len; i++) {
    if (str[i] === stopChar) break
    result += str[i]
  }
  return [result, str.slice(result.length + 1)]
}

Tests:

regexp
const splitAppName = /[^@.]+/g const [vendor] = splitAppName.exec(fullAppName) || [null] const [name] = splitAppName.exec(fullAppName) || [null] const [major] = splitAppName.exec(fullAppName) || [null]
split
const [fullName, version] = fullAppName.split('@', 2) const [major] = version.split('.', 1) const [vendor, name] = fullName.split('.', 2)
manual method
const [appName, version] = eatUntil('@', fullAppName); const [vendor, name] = eatUntil('.', appName); const [major] = eatUntil('.', version);

Run results for: regexp vs split 6

regexp

split

manual method