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- '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
- });
- }
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