Edit File: es7.reflect.get-metadata-keys.js
var Set = require('./es6.set'); var from = require('./_array-from-iterable'); var metadata = require('./_metadata'); var anObject = require('./_an-object'); var getPrototypeOf = require('./_object-gpo'); var ordinaryOwnMetadataKeys = metadata.keys; var toMetaKey = metadata.key; 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; }; metadata.exp({ getMetadataKeys: function getMetadataKeys(target /* , targetKey */) { return ordinaryMetadataKeys(anObject(target), arguments.length < 2 ? undefined : toMetaKey(arguments[1])); } });
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