var $ = require('../internals/export'); // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env` var Set = require('../modules/es.set'); var ReflectMetadataModule = require('../internals/reflect-metadata'); var anObject = require('../internals/an-object'); var getPrototypeOf = require('../internals/object-get-prototype-of'); var iterate = require('../internals/iterate'); var ordinaryOwnMetadataKeys = ReflectMetadataModule.keys; var toMetadataKey = ReflectMetadataModule.toKey; var from = function (iter) { var result = []; iterate(iter, result.push, { that: result }); return result; }; var ordinaryMetadataKeys = function (O, P) { var oKeys = ordinaryOwnMetadataKeys(O, P); var parent = getPrototypeOf(O); if (parent === null) return oKeys; var pKeys = ordinaryMetadataKeys(parent, P); return pKeys.length ? oKeys.length ? from(new Set(oKeys.concat(pKeys))) : pKeys : oKeys; }; // `Reflect.getMetadataKeys` method // https://github.com/rbuckton/reflect-metadata $({ target: 'Reflect', stat: true }, { getMetadataKeys: function getMetadataKeys(target /* , targetKey */) { var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]); return ordinaryMetadataKeys(anObject(target), targetKey); } });