The Tor Browser / file revision

 // Copyright 2009 the Sputnik authors.  All rights reserved.

 // This code is governed by the BSD license found in the LICENSE file.

 /**

  * If Type(Primitive(x)) is not String or Type(Primitive(y)) is not String, then operator x < y returns ToNumber(x) < ToNumber(y)

  *

  * @path ch11/11.8/11.8.1/S11.8.1_A3.1_T2.4.js

  * @description Type(Primitive(x)) is different from Type(Primitive(y)) and both types vary between Number (primitive or object) and Undefined

  */

 //CHECK#1

 if (1 < undefined !== false) {

   $ERROR('#1: 1 < undefined === false');

 }

 //CHECK#2

 if (undefined < 1 !== false) {

   $ERROR('#2: undefined < 1 === false');

 }

 //CHECK#3

 if (new Number(1) < undefined !== false) {

   $ERROR('#3: new Number(1) < undefined === false');

 }

 //CHECK#4

 if (undefined < new Number(1) !== false) {

   $ERROR('#4: undefined < new Number(1) === false');

 }