rem: return array.concat(value.constructor == Array ? 
add: return array.concat(value && value.constructor == Array ? 
context:   flatten: function() {    return this.inject([], function(array, value) {      return array.concat(value.constructor == Array ?        value.flatten() : [value]);    });  },
meta: 2801	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2801/7e143d2df37946a5416f0f043869478087652eb6/prototype.js/clean/examples/testcases/prototype.js