--- /dev/null
+var metadata = require('./_metadata')
+ , anObject = require('./_an-object')
+ , toMetaKey = metadata.key
+ , ordinaryDefineOwnMetadata = metadata.set;
+
+metadata.exp({defineMetadata: function defineMetadata(metadataKey, metadataValue, target, targetKey){
+ ordinaryDefineOwnMetadata(metadataKey, metadataValue, anObject(target), toMetaKey(targetKey));
+}});
\ No newline at end of file