--- /dev/null
+var $ = require('../internals/export');
+var ReflectMetadataModule = require('../internals/reflect-metadata');
+var anObject = require('../internals/an-object');
+
+var toMetadataKey = ReflectMetadataModule.toKey;
+var getOrCreateMetadataMap = ReflectMetadataModule.getMap;
+var store = ReflectMetadataModule.store;
+
+// `Reflect.deleteMetadata` method
+// https://github.com/rbuckton/reflect-metadata
+$({ target: 'Reflect', stat: true }, {
+ deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) {
+ var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);
+ var metadataMap = getOrCreateMetadataMap(anObject(target), targetKey, false);
+ if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false;
+ if (metadataMap.size) return true;
+ var targetMetadata = store.get(target);
+ targetMetadata['delete'](targetKey);
+ return !!targetMetadata.size || store['delete'](target);
+ }
+});