var metadata = require('./_metadata'); var anObject = require('./_an-object'); var ordinaryHasOwnMetadata = metadata.has; var toMetaKey = metadata.key; metadata.exp({ hasOwnMetadata: function hasOwnMetadata(metadataKey, target /* , targetKey */) { return ordinaryHasOwnMetadata(metadataKey, anObject(target) , arguments.length < 3 ? undefined : toMetaKey(arguments[2])); } });