Use node.js timers explicitly to support Electron

lib/registry.js

@@ -1,5 +1,6 @@
 'use strict'
 
+var timers = require('timers')
 var dnsEqual = require('dns-equal')
 var flatten = require('array-flatten')
 var Service = require('./service')
@@ -81,7 +82,7 @@ function probe (mdns, service, cb) {
  var timer
 
  mdns.on('response', onresponse)
- setTimeout(send, Math.random() * 250)
+ timers.setTimeout(send, Math.random() * 250)
 
  function send () {
  // abort if the service have or is being stopped in the meantime
@@ -91,7 +92,7 @@ function probe (mdns, service, cb) {
  // This function will optionally be called with an error object. We'll
  // just silently ignore it and retry as we normally would
  sent = true
- timer = setTimeout(++retries < 3 ? send : done, 250)
+ timer = timers.setTimeout(++retries < 3 ? send : done, 250)
  timer.unref()
  })
  }
@@ -146,7 +147,7 @@ function announce (server, service) {
  }
  delay = delay * REANNOUNCE_FACTOR
  if (delay < REANNOUNCE_MAX_MS && !service._destroyed) {
- setTimeout(broadcast, delay).unref()
+ timers.setTimeout(broadcast, delay).unref()
  }
  })
  })()