@@ -36,8 +36,20 @@ function internalRewire(parentModulePath, targetPath) {
3636// We prepend a list of all globals declared with var so they can be overridden (without changing original globals)
3737prelude = getImportGlobalsSrc ( ) ;
3838
39+ // The module src is wrapped inside a self-executing function.
40+ // This is necessary to separate the module src from the preceding importGlobalsSrc,
41+ // because the module src can be in strict mode.
42+ // In strict mode eval() can only declare vars in the current scope. In this case our setters
43+ // and getters won't work.
44+ //@see http://whereswalden.com/2011/01/10/new-es5-strict-mode-support-new-vars-created-by-strict-mode-eval-code-are-local-to-that-code-only/
45+ // It also circumvents a problem with identical global variables and function declarations
46+ //@see https://github.com/jhnns/rewire/issues/56
47+ prelude += "(function () { " ;
48+
3949// We append our special setter and getter.
4050appendix = "\n" + getDefinePropertySrc ( ) ;
51+ // End of self-executing function
52+ appendix += "})();" ;
4153
4254// Check if the module uses the strict mode.
4355// If so we must ensure that "use strict"; stays at the beginning of the module.