-
-
Notifications
You must be signed in to change notification settings - Fork 1.6k
/
esnext.reflect.get-metadata.js
24 lines (21 loc) · 1.03 KB
/
esnext.reflect.get-metadata.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
var $ = require('../internals/export');
var ReflectMetadataModule = require('../internals/reflect-metadata');
var anObject = require('../internals/an-object');
var getPrototypeOf = require('../internals/object-get-prototype-of');
var ordinaryHasOwnMetadata = ReflectMetadataModule.has;
var ordinaryGetOwnMetadata = ReflectMetadataModule.get;
var toMetadataKey = ReflectMetadataModule.toKey;
var ordinaryGetMetadata = function (MetadataKey, O, P) {
var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);
if (hasOwn) return ordinaryGetOwnMetadata(MetadataKey, O, P);
var parent = getPrototypeOf(O);
return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;
};
// `Reflect.getMetadata` method
// https://github.com/rbuckton/reflect-metadata
$({ target: 'Reflect', stat: true }, {
getMetadata: function getMetadata(metadataKey, target /* , targetKey */) {
var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);
return ordinaryGetMetadata(metadataKey, anObject(target), targetKey);
}
});