Run results for: regexp vs split 6

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0

Browser: Firefox 84

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
regexp	4438534.0 Ops/sec
split	1974798.9 Ops/sec
manual method	2745756.2 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