// this will currently compile

export const foo1 = function(symbols: any, v?: boolean){  // symbols is an optional Array<Symbol> argument

  if(arguments.length < 2){
    v = symbols;
    symbols = [];
  }

  const tags = {};
  for(let s of symbols){
    tags[s] = true;
  }

  return {
   value: v,
   tags
  }

};


// now this could be made so much simpler with some compiler tricks!
// but this won't currently compile

export const foo2 = function(...symbols: Array<Symbol>, v: any){

  const tags = {};
  for(let s of symbols){
    tags[s] = true;
  }

  return {
   value: v,
   tags
  }

};

// in the second case, I don't have to check to see if the array exists
// and I no longer need optional paramaters


// so before, it looks like this:


foo1([Symbol('one'), Symbol('two')], {

});

// now it looks like:


foo2(Symbol('one'), Symbol('two'), {

});