javascript - Browser needs reload for method to re work -

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this meteor client code located in client/lib.js returns true first time if method called again returns false. 2 exact calls happens in browser console.
unless hard reload page, works again correctly first time only.

why , how fix it? thanks

validate = (function () {   const patterns = {     usernamepat: new regexp('^[0-9a-za-z]{16}$', 'g')   };   return {     username: (name) => {       return patterns.usernamepat.test(some_username);     }   } }());


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