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- 'use strict';
- // TODO: Remove from `core-js@4`
- var $ = require('../internals/export');
- var uncurryThis = require('../internals/function-uncurry-this');
- var ReflectMetadataModule = require('../internals/reflect-metadata');
- var anObject = require('../internals/an-object');
- var getPrototypeOf = require('../internals/object-get-prototype-of');
- var $arrayUniqueBy = require('../internals/array-unique-by');
-
- var arrayUniqueBy = uncurryThis($arrayUniqueBy);
- var concat = uncurryThis([].concat);
- var ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;
- var toMetadataKey = ReflectMetadataModule.toKey;
-
- 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 ? arrayUniqueBy(concat(oKeys, 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);
- }
- });
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