lib/services.js
function CallContext(msg, channel) {
  this.channel = channel;
  this.locals = {};
  this.message = msg;
  Object.freeze(this);
}
function CallContext(msg, channel) {
  this.channel = channel;
  this.locals = {};
  this.message = msg;
  Object.freeze(this);
}
function CallContext ( msg , channel ) { this . channel = channel ; this . locals = { } ; this . message = msg ; Object . freeze ( this ) ; }
Context for all middleware and handlers.

It exposes a `locals` object which can be used to pass information between
each other during a given call.
Context for all middleware and handlers .