www/build/tools/csslint-rhino.js
function (actual, message) {
        YUITest.Assert._increment();
        if (typeof actual != "undefined") {
            throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, "Value should be undefined."), undefined, actual);
        }
    }
function (actual, message) {
        YUITest.Assert._increment();
        if (typeof actual != "undefined") {
            throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, "Value should be undefined."), undefined, actual);
        }
    }
function ( actual , message ) { YUITest . Assert . _increment ( ) ; if ( typeof actual != "undefined" ) { throw new YUITest . ComparisonFailure ( YUITest . Assert . _formatMessage ( message , "Value should be undefined." ) , undefined , actual ) ; } }
Asserts that a value is undefined. This uses the triple equals sign
so no type cohersion may occur.
@param {Object} actual The actual value to test.
@param {String} message (Optional) The message to display if the assertion fails.
@method isUndefined
@static
Asserts that a value is undefined . This uses the triple equals sign so no type cohersion may occur .