joshuaatencia

type Combinable = number | string;
type ConversionDescriptor = 'as-number' | 'as-text';

function combine(input1: Combinable, input2: Combinable, resultConversation: ConversionDescriptor){
  let result;
  
  if(typeof input1 === 'number' && typeof input2 === 'number' || resultConversation === 'as-number'){
    result = +input1 + +input2;
  }else{
    result = `${input1} ${input2}`;