In JavaScript, the arguments keyword is useful for getting information about a function's arguments. It's 'array-like' in that it can be indexed like an array, but Array.isArray will return false on it.
I'm trying to use arguments.length in a function I am exporting via module.exports like so:
module.exports.foo = (args) => {
console.log(arguments.length);
}
The problem: arguments.length always prints 5. When I actually go to print arguments itself, I see that it is an array-like object containing the following:
0: an array of things I'm exporting from the current module (in this case, an array of all of my functions.
1: the require function
2: an object containing information about the current module, like what it's exporting, the including module, file paths, etc.
3: he path to the current module
4: the path to the directory containing the current module
The problem is arguments in this context doesn't work like I expect it to. No matter how many arguments I pass in to the function call, it always prints 5.
How do you properly use the arguments keyword in Node.js exported functions?
