15 lines
450 B
JavaScript
15 lines
450 B
JavaScript
|
'use strict';
|
||
|
|
var wellKnownSymbol = require('../internals/well-known-symbol');
|
||
|
|
var defineProperty = require('../internals/object-define-property').f;
|
||
|
|
|
||
|
|
var METADATA = wellKnownSymbol('metadata');
|
||
|
|
var FunctionPrototype = Function.prototype;
|
||
|
|
|
||
|
|
// Function.prototype[@@metadata]
|
||
|
|
// https://github.com/tc39/proposal-decorator-metadata
|
||
|
|
if (FunctionPrototype[METADATA] === undefined) {
|
||
|
|
defineProperty(FunctionPrototype, METADATA, {
|
||
|
|
value: null
|
||
|
|
});
|
||
|
|
}
|