==== tests/cases/compiler/module_augmentExistingAmbientVariable.ts (1 errors) ====
    declare var console: any;
    
    module console {
           ~~~~~~~
!!! module_augmentExistingAmbientVariable.ts(3,8): error TS2000: Duplicate identifier 'console'. Additional locations:
!!! 	module_augmentExistingAmbientVariable.ts(1,13)
        export var x = 2;
    }