Is there any alternatives to a huge switch, with multiple cases and fallthrough in JavaScript?

Question

I need to map some user generated fields to something the system I'm working on can recognize.

For this we want to provide a certain amount of freedom for users, and offer five or so options for each of our fields.

So far we have a switch which does the job, but now we have to extend the switch, and it's going to be pretty big. This is needless to say not a very dynamic way of doing it. Is there any alternatives?

function findHeader(object) {
  var title = object.toString().trim().toLowerCase()
  switch (title) {
    case 'name':
    case 'idea':
    case 'ide':
    case 'ide navn':
    case 'title':
    case 'idea name':
      title = 'name'
      break
    case 'beskrivelse':
    case 'problemet':
    case 'description':
    case 'the problem':
    case 'ide beskrivelse':
      title = 'description'
      break
    case 'ejer':
    case 'owner':
    case 'opfinder':
    case 'ide person':
    case 'idea person':
    case 'person':
      title = 'owner'
      break
    case 'duedate':
    case 'deadline':
    case 'tidsfrist':
    case 'sidste dato':
    case 'dato':
    case 'due date':
      title = 'duedate'
      break
    case 'billede':
    case 'billeder':
    case 'image':
    case 'images':
    case 'attachment':
      title = 'imageUrl'
      break
    case "":
      title = 'remove'
      break
    default:
      title = 'Unassigned'
      break
  }
  return title
}

Answer 1

Perhaps an object?

const titles = {
  'name':        ['name', 'idea', 'ide', 'ide navn', 'title', 'idea name'],
  'description': ['beskrivelse', 'problemet', 'description', 'the problem', 'ide beskrivelse'],
  'owner' :      ['ejer', 'owner', 'opfinder', 'ide person', 'idea person', 'person'],
  'duedate' :    ['duedate', 'deadline', 'tidsfrist', 'sidste dato', 'dato', 'due date'],
  'imageUrl' :   ['billede', 'billeder', 'image', 'images', 'attachment']
}
const getKey = (obj,val) => Object.keys(obj).find(key => obj[key].indexOf(val) !=-1 );

function findHeader(object) {  
  var title = object.toString().trim().toLowerCase();
  return getKey(titles,title) || 'Unassigned' 
}

console.log(
  findHeader("Owner"),
  findHeader("Bla")
)