|  | @@ -267,7 +267,7 @@ define(['./compatibility'], function () {
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				|  |  |          st.addClass = function (className, superclass, iVarNames, pkgName) {
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				|  |  |              // While subclassing nil is allowed, it might be an error, so
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				|  |  |              // warn about it.
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				|  |  | -            if (typeof superclass == 'undefined' || superclass && superclass.a$nil) {
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				|  |  | +            if (typeof superclass === 'undefined' || superclass && superclass.a$nil) {
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				|  |  |                  console.warn('Compiling ' + className + ' as a subclass of `nil`. A dependency might be missing.');
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				|  |  |              }
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				|  |  |              return buildBehaviorBody(pkgName, classBuilder(className, superclass, iVarNames, coreFns[className]));
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