start.js

function start(component) {
  // Restrict it from displaying in a smaller size
  if (component.style.height < 300) {
    component.style['height'] = 300
  }
  
  if (component.type === 'button') {
    // Give all button components a dashed teal border
    component.style['border'] = '1px dashed teal'
  }
  
  if (component.type === 'input') {
    if (component.inputType === 'email') {
      // Uppercase every letter for email inputs
      component.style.textTransform = 'uppercase'
    }
  }
  
  return component
}

const component = {
  type: 'div',
  style: {
    height: 250,
    fontSize: 14,
    fontWeight: 'bold',
    textAlign: 'center',
  },
}

const result = start(component)
console.log(result)