Run results for: Switch vs map with string keys and early exit

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
Switch	6541658.5 Ops/sec
Map	6895156.5 Ops/sec

Script Preparation code:

var runSwitch = input =>   {
  switch(input) {
    case 'one':
      return true;
    case 'two':
      return true;
    case 'three':
      return true;
    case 'four':
      return true;
     case 'five':
      return true;
    case 'six':
      return true;
    case 'seven':
      return true;
    case 'eight':
      return true;
      case 'nine':
      return true;
    case 'ten':
      return true;
  }
}

var LUT = {
	zero: true,
  one: true,
  two: true,
  three: true,
  four: true,
  five: true,
  six: true,
  seven: true,
  eight: true,
  nine: true,
  ten: true
}

var input = 'five';

Tests:

Switch
runSwitch(input);
Map
LUT[input];

Run results for: Switch vs map with string keys and early exit

Switch

Map