core-js/modules/esnext.reflect.get-own-metadata-keys.js

var $ = require('../internals/export');
var ReflectMetadataModule = require('../internals/reflect-metadata');
var anObject = require('../internals/an-object');

var ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;
var toMetadataKey = ReflectMetadataModule.toKey;

// `Reflect.getOwnMetadataKeys` method
// https://github.com/rbuckton/reflect-metadata
$({ target: 'Reflect', stat: true }, {
  getOwnMetadataKeys: function getOwnMetadataKeys(target /* , targetKey */) {
    var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]);
    return ordinaryOwnMetadataKeys(anObject(target), targetKey);
  }
});