ReferenceError: timbreController is not defined

I'm trying to generate nodejs code, but it sends me the following error

module.exports = {
oninit : function (vnode) { 
  this.ctx = new timbreController(vnode.attrs); 
},
view : function (vnode) { 
  return facturaView(this.ctx) 
   }
};

function timbreController(Params) {
var ctx = this;
var search = m.prop('');
console.log(location);
}
function facturaView(ctx){
console.log(ctx);
}

and it throws me the next error

  

"ReferenceError: timbreController is not defined       at eval (eval at view etc .......