Hello folks, I need a standard Contribution Guide for this repo to help people.
Few things I want to have in it are:

• The purpose of the project may need to break some of the Airbnb rules
• We need to have test cases as well

So you have to implement the String.prototype.toUpperCase()

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the String.prototype.split()

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the Function.prototype.bind()

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the Array.prototype.flatMap()

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the String.prototype.toLowerCase()

Take care of:

• ESLint guidelines
• Filename convention

Adding tests would be useful in this case and also will be easier to refactor code.

We could use jest for testing.

What do we need?

• ESLint setup for the codebase
• The code standard should be Airbnb
• Env support for Node should be there
• The .eslintrc should be in JSON format

So you have to implement the Array.prototype.sort()

You can use this article: Time & Space Complexity of Array.sort in V8
V8 Array.sort code on github : Array.sort

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the Function.prototype.apply()

Take care of:

• ESLint guidelines
• Filename convention

So you have to implement the isNaN()

Take care of:

• ESLint guidelines
• Filename convention