Hi there!

Beginner to leetcode, I've been able to work through a handful of algorithms with no hiccups, but I'm getting hung up on this one. It seems like every time I run code, no matter what the intended output should be, it is always coming up as an empty array []. This is true for both run code and submit. Here is my solution for reference:

var compress = function(chars) {
    let arr = []
    let count = 1
    for (let i = 0; i < chars.length; i++) {
        if (chars[i] === chars[i+1]) {
            count++
        } else {
            arr.push(chars[i], count)
            count = 1
        }
    }
    return arr
};

I've also tried this and had the same result:

var compress = function(chars) {
    return 'PLEASE RETURN THIS'
};

Is this user error or a bug? What can I do to get my answer through?

Any help is greatly appreciated.