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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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