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Implement a function that recursively traverses an object, evaluates functions with given arguments, and transforms keys to lowercase. Master recursive object traversal and type checking.
This challenge requires you to implement a function that processes nested objects containing functions.
Goal: Implement the recursive object evaluation function within 30-45 minutes. Focus on understanding recursive traversal and type checking.
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Implement your own Promise.all polyfill to understand how concurrent Promise handling works under the hood.