Watch and Code - Beasts 2. Improving runWithDebugger

runWithDebugger.js

function runWithDebugger(callback, array){
    
    debugger;
    
    // when has second argument
    if(arguments.length > 1){
        // when second argument's type is array
        if(Array.isArray(array)){
            callback.apply(null, array);
        // when second argument's type is not array
        } else {
            try {
                throw new TypeError('The second argument must be an array.');
            } catch(e) {
                console.error(e.stack);
            }
        }
    // when no second argument
    } else {
        callback();
    }
}