1 var $ = require('../internals/export');
2 var uncurryThis = require('../internals/function-uncurry-this');
3 var ReflectMetadataModule = require('../internals/reflect-metadata');
4 var anObject = require('../internals/an-object');
5 var getPrototypeOf = require('../internals/object-get-prototype-of');
6 var $arrayUniqueBy = require('../internals/array-unique-by');
8 var arrayUniqueBy = uncurryThis($arrayUniqueBy);
9 var concat = uncurryThis([].concat);
10 var ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;
11 var toMetadataKey = ReflectMetadataModule.toKey;
13 var ordinaryMetadataKeys = function (O, P) {
14 var oKeys = ordinaryOwnMetadataKeys(O, P);
15 var parent = getPrototypeOf(O);
16 if (parent === null) return oKeys;
17 var pKeys = ordinaryMetadataKeys(parent, P);
18 return pKeys.length ? oKeys.length ? arrayUniqueBy(concat(oKeys, pKeys)) : pKeys : oKeys;
21 // `Reflect.getMetadataKeys` method
22 // https://github.com/rbuckton/reflect-metadata
23 $({ target: 'Reflect', stat: true }, {
24 getMetadataKeys: function getMetadataKeys(target /* , targetKey */) {
25 var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]);
26 return ordinaryMetadataKeys(anObject(target), targetKey);