Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var falseThing = false;
    var trueThing = true;
    var i = 0;
    
    function uselessFunction() {
      i = 0;
    }
  };
</script>

Test runner

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falseThing && uselessFunction();
falseThing || uselessFunction();
trueThing && uselessFunction();
trueThing || uselessFunction();

if (falseThing) uselessFunction();
if (!falseThing) uselessFunction();
if (trueThing) uselessFunction();
if (!trueThing) uselessFunction();

falseThing && uselessFunction();
!falseThing && uselessFunction();
trueThing && uselessFunction();
!trueThing && uselessFunction();

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