Suppose you want to Check to see whether any variables in the code are predefined, then which of the following matcher you will use?

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Jasmine.js is an open-source testing framework for JavaScript. It aims to run on any JavaScript-enabled platform, to not intrude on the application nor the IDE, and to have easy-to-read syntax. It is heavily influenced by other unit testing frameworks, such as ScrewUnit, JSSpec, JSpec, and RSpec.


Suppose you want to Check to see whether any variables in the code are predefined, then which of the following matcher you will use?