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esnext.reflect.get-metadata-keys.js
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esnext.reflect.get-metadata-keys.js
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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);
}
});