message: Fix type extend
diff: @@ -2,7 +2,7 @@ import BunyanLogger = require('bunyan')
  import BaseServer, { Reporter, BaseServerOptions } from '../base-server'
  -export type ServerOptions = BaseServerOptions & {
  +export type ServerOptions = BaseServerOptions | {
  /**
  * Report process/errors to CLI in bunyan JSON or in human readable
  * format. It can be also a function to show current server status.
  