1 var $ = require('../internals/export');
2 var ReflectMetadataModule = require('../internals/reflect-metadata');
3 var anObject = require('../internals/an-object');
5 var toMetadataKey = ReflectMetadataModule.toKey;
6 var getOrCreateMetadataMap = ReflectMetadataModule.getMap;
7 var store = ReflectMetadataModule.store;
9 // `Reflect.deleteMetadata` method
10 // https://github.com/rbuckton/reflect-metadata
11 $({ target: 'Reflect', stat: true }, {
12 deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) {
13 var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);
14 var metadataMap = getOrCreateMetadataMap(anObject(target), targetKey, false);
15 if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false;
16 if (metadataMap.size) return true;
17 var targetMetadata = store.get(target);
18 targetMetadata['delete'](targetKey);
19 return !!targetMetadata.size || store['delete'](target);