taskPlanner mid exam

function taskPlanner(input) {
    let taskHours = input.shift().split(' ');
    taskHours = taskHours.map(Number).filter((el) => {
        return el >= -1 && el <= 5;
    });

    for (let line of input) {
        if (line === 'End') {
            break;
        }
        let tokens = line.split(' ');
        let command = tokens[0];
        if (command === 'Complete') {

            let index = Number(tokens[1]);
            if (index >= 0 && index < taskHours.length) {
                taskHours[index] = 0;
            }
        } else if (command === 'Change') {
            let index = Number(tokens[1]);
            let time = Number(tokens[2]);
            if (index >= 0 && index < taskHours.length) {
                taskHours[index] = time;
            }
        } else if (command === 'Drop') {
            let index = Number(tokens[1]);
            if (index >= 0 && index < taskHours.length) {
                taskHours[index] = -1;
            }
        } else if (command === 'Count') {
            if (tokens[1] === 'Completed') {
                let completedTasks = taskHours.map(Number).filter(el => {
                    return el === 0;
                });
                console.log(completedTasks.length);
            } else if (tokens[1] === 'Incomplete') {
                let incompletedTasks = taskHours.map(Number).filter(el => {
                    return el !== 0 && el !== -1;
                });
                console.log(incompletedTasks.length);
            } else if (tokens[1] === 'Dropped') {

                let droppedTasks = taskHours.map(Number).filter(el => {
                    return el === -1;
                });
                console.log(droppedTasks.length);
            }
        }
    }
    let incompletedTaskscl = taskHours.map(Number).filter(el => {
        return el !== 0 && el !== -1;
    });
    console.log(incompletedTaskscl.join(' '));
}