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.

 /**

  * Operator x >>> y returns ToNumber(x) >>> ToNumber(y)

  *

  * @path ch11/11.7/11.7.3/S11.7.3_A3_T1.4.js

  * @description Type(x) and Type(y) vary between Null and Undefined

  */

 //CHECK#1

 if (null >>> undefined !== 0) {

   $ERROR('#1: null >>> undefined === 0. Actual: ' + (null >>> undefined));

 }

 //CHECK#2

 if (undefined >>> null !== 0) {

   $ERROR('#2: undefined >>> null === 0. Actual: ' + (undefined >>> null));

 }

 //CHECK#3

 if (undefined >>> undefined !== 0) {

   $ERROR('#3: undefined >>> undefined === 0. Actual: ' + (undefined >>> undefined));

 }

 //CHECK#4

 if (null >>> null !== 0) {

   $ERROR('#4: null >>> null === 0. Actual: ' + (null >>> null));

 }