- var uncurryThis = require('../internals/function-uncurry-this');
- var id = 0;
- var postfix = Math.random();
- var toString = uncurryThis(1.0.toString);
- module.exports = function (key) {
- return 'Symbol(' + (key === undefined ? '' : key) + ')_' + toString(++id + postfix, 36);
- };
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