# Introduction In this challenge, Tom wants to develop a basic API for JS unit testing on his own. He starts with writing a function to check if two data values are equal, but he is now stuck. The goal is to write a function called `expectFn` that can help developers test their code. It should accept any value as the parameter `val` and return an object that contains two functions: `toBe(val)` and `notToBe(val)`.
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