A Function that removes duplicate values from a sorted Array

removeduplicate.js

const removeDuplicates = (sortedArray) => {
    const filteredArray = [];
    sortedArray.forEach((num)=> {
        if(!filteredArray.includes(num)) {
            filteredArray.push(num);
        }
    });

    return filteredArray.length;
}

Thank you so much @meekg33k, i really appreciate the feedback.
I have gone through the solutions and have seen what i could have done better.

I hope to do better this week and make sure i consider edge cases when writing code.

I really appreciate and thanks for organizing this.