Javascript ES6 basic script to calculate sleep hours.

sleep-hours.js

const getSleepHours = day => 8;

const getActualSleepHours = () => getSleepHours('Monday') + getSleepHours('Tuesday') + getSleepHours('Wednesday') + getSleepHours('Thursday') + getSleepHours('Friday') + getSleepHours('Saturday') + getSleepHours('Sunday');

const getIdealSleepHours = () => {
  let idealHours = 8;
  return idealHours * 7;
}

const calculateSleepDebt = () => {
  let actualSleepHours = getActualSleepHours();
  let idealSleepHours = getIdealSleepHours();
  if( actualSleepHours === idealSleepHours ){
    console.log('You should be perfectly rested with '+ actualSleepHours);
  } else if( actualSleepHours > idealSleepHours ) {
    console.log('Wake up dude. You slept '+ (actualSleepHours - idealSleepHours) +' hours.');
  } else {
    console.log('Rest more. You still need '+ (idealSleepHours - actualSleepHours) +' hours.')
  }
}

calculateSleepDebt();
//console.log(getIdealSleepHours());