Sorted List JS Advanced

class List {
    constructor() {
        this.elements = [];
        this.size = 0;
    }

    add(element) {
        let index = 0;
        while (index < this.elements.length && this.elements[index] < element) {
            index++;
        }
        this.elements.splice(index, 0, element);
        this.size++;
        return this;
    }

    remove(index) {
        if (index >= 0 && index < this.elements.length) {
            this.elements.splice(index, 1);
            this.size--;
        }
        return this;
    }

    get(index) {
        if (index >= 0 && index < this.elements.length) {
            return this.elements[index];
        }
        return undefined;
    }
}