Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var text = ""
    for (var i = 0; i < 10000; i++) {
      text += "test" + i + "\n";
    }
  };
</script>

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var a = []
var result = text.split("\n");
for(var i = 0, length = result.length; i < length; i++){
  a.push(result[i]);
}

var a = [];
for (var i = 0, length = text.length; i < length;) {
  var last = text.indexOf("\n", i);
  var line = text.slice(i, last);
  a.push(line);
  i = last + 1;
}

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