SymbolImpl simple fallback for environments that don't have Symbol type

package.json

{
  "name": "SymbolImpl",
  "description": "SymbolImpl simple fallback for environments that don't have Symbol type",
  "version": "0.0.2",
  "main": "SymbolImpl.js",
  "dependencies": {
  }
}

SymbolImpl.js

'use strict';

let SymbolImpl;

if (typeof(Symbol) === 'undefined') {
  SymbolImpl = (value) => {
	  const salt = Math.random();
	  const symbol = () => `@@${value}:${salt}`;
	  symbol.toString = symbol;
	  symbol.valueOf = symbol;
	  return symbol;
  };
} else {
  SymbolImpl = Symbol;
}

export default SymbolImpl;