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- 'use strict';
-
- var global = require('es5-ext/global')
- , polyfill = require('../polyfill');
-
- module.exports = function (t, a) {
- var cache;
- a(typeof t(), 'boolean');
- cache = global.Symbol;
- global.Symbol = polyfill;
- a(t(), true);
- if (cache === undefined) delete global.Symbol;
- else global.Symbol = cache;
- };
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