message: Check options.reporter
diff: @@ -211,7 +211,11 @@ class Client {
  keysBlacklist: this.opts.keysBlacklist,
  });
  if (this.opts.reporter) {
  + if (typeof this.opts.reporter === 'function') {
  return this.opts.reporter(notice);
  + } else {
  + console.warn('airbrake: options.reporter must be a function');
  + }
  }
  let req = {
  