diff --git a/example/ding-dong-bot.ts b/example/ding-dong-bot.ts
index 2b236eec5564ce635e5fa300979bd73275bdbac8..92d7834e1d05e30555dd5f2a4a4e439a3d350ed6 100644
--- a/example/ding-dong-bot.ts
+++ b/example/ding-dong-bot.ts
@@ -43,7 +43,7 @@ bot
 .on('logout'	, user => log.info('Bot', `${user.name()} logouted`))
 .on('error'   , e => log.info('Bot', 'error: %s', e))
 .on('scan', (url, code) => {
-  if (!/201|200/.test(code)) {
+  if (!/201|200/.test(String(code))) {
     let loginUrl = url.replace(/\/qrcode\//, '/l/')
     require('qrcode-terminal').generate(loginUrl)
   }
diff --git a/example/friend-bot.ts b/example/friend-bot.ts
index b3998df0152e7655806c1fb3167fa60effcb4606..9f76a91ec70fc5639a06e4116e96ab1c76620766 100644
--- a/example/friend-bot.ts
+++ b/example/friend-bot.ts
@@ -45,7 +45,7 @@ bot
 .on('logout'	, user => log.info('Bot', `${user.name()} logouted`))
 .on('error'   , e => log.info('Bot', 'error: %s', e))
 .on('scan', (url, code) => {
-  if (!/201|200/.test(code)) {
+  if (!/201|200/.test(String(code))) {
     let loginUrl = url.replace(/\/qrcode\//, '/l/')
     require('qrcode-terminal').generate(loginUrl)
   }
diff --git a/example/tuling123-bot.ts b/example/tuling123-bot.ts
index 8633bd9e29fcf68ed9ba826e550c7ea17c58e9dd..1830edef6bf84a04a481e002f93b463578e51999 100644
--- a/example/tuling123-bot.ts
+++ b/example/tuling123-bot.ts
@@ -50,7 +50,7 @@ Loading...
 bot
 .on('login'  , user => log.info('Bot', `bot login: ${user}`))
 .on('logout' , e => log.info('Bot', 'bot logout.'))
-.on('scan', ({url, code}) => {
+.on('scan', (url, code) => {
   console.log(`Scan QR Code in url to login: ${code}\n${url}`)
 })
 .on('message', async m => {
diff --git a/src/config.ts b/src/config.ts
index 0f2784b5168ff1ec80d3f451e40fce197268b087..1161becef3e866f1f3f8be200ae1458b33303da7 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -143,11 +143,20 @@ type ScanInfo = {
   code: number
 }
 
+type RecommendInfo = {
+  UserName:   string
+  NickName:   string
+  Content:    string // request message
+  Ticket:     string // a pass token
+  VerifyFlag: number
+}
+
 export default Config
 export {
     Config
   , HeadType
   , PuppetType
+  , RecommendInfo
   , ScanInfo
   , WatchdogFood
   , WechatyEventName
diff --git a/src/message.ts b/src/message.ts
index fa330502f99ebf8f732d3e6cd92fb88176fc39aa..5838b1b7f29d91ad5d7cb2fff29a2e8ef36b6a91 100644
--- a/src/message.ts
+++ b/src/message.ts
@@ -6,7 +6,11 @@
  * https://github.com/wechaty/wechaty
  *
  */
-import Config   from './config'
+import {
+    Config
+  , RecommendInfo
+}               from './config'
+
 import Contact  from './contact'
 import Room     from './room'
 import UtilLib  from './util-lib'
@@ -21,6 +25,8 @@ type MessageRawObj = {
   Status:           string
   MMDigest:         string
   MMDisplayTime:    string  // Javascript timestamp of milliseconds
+
+  RecommendInfo?:   RecommendInfo
 }
 
 type MessageObj = {
@@ -73,7 +79,7 @@ class Message {
     throw Error('abstract method')
   }
 
-  constructor(private rawObj?: MessageRawObj) {
+  constructor(public rawObj?: MessageRawObj) {
     Message.counter++
 
     if (typeof rawObj === 'string') {
diff --git a/src/puppet-web/firer.spec.ts b/src/puppet-web/firer.spec.ts
index 50a8124c086105321cc4e38bb55ef68450572deb..19db5ce544495f4d1078093362ab73fd3a9587fb 100644
--- a/src/puppet-web/firer.spec.ts
+++ b/src/puppet-web/firer.spec.ts
@@ -60,14 +60,15 @@ test('Firer.checkRoomJoin', t => {
 
   let result
   contentList.forEach(([content, inviter, inviteeList]) => {
-    result = Firer.checkRoomJoin(content)
+    result = Firer.checkRoomJoin(content as string)
     t.truthy(result, 'should check room join message right for ' + content)
     t.deepEqual(result[0], inviteeList, 'should get inviteeList right')
     t.is(result[1], inviter, 'should get inviter right')
   })
 
-  result = Firer.checkRoomJoin('fsadfsadfsdfsdfs')
-  t.false(result, 'should get false if message is not expected')
+  t.throws(() => {
+    Firer.checkRoomJoin('fsadfsadfsdfsdfs')
+  }, 'should throws if message is not expected')
 })
 
 test('Firer.checkRoomLeave', t => {
@@ -81,8 +82,9 @@ test('Firer.checkRoomLeave', t => {
   t.truthy(leaver, 'should get leaver for leave message')
   t.is(leaver, data[1], 'should get leaver name right')
 
-  leaver = Firer.checkRoomLeave('fafdsfsdfafa')
-  t.false(leaver, 'should get false if message is not expected')
+  t.throws(() => {
+    Firer.checkRoomLeave('fafdsfsdfafa')
+  }, 'should throw if message is not expected')
 })
 
 test('Firer.checkRoomTopic', t => {
diff --git a/src/puppet-web/firer.ts b/src/puppet-web/firer.ts
index 66c9994c3d9d8160fa5cf1ea5c0d35eb8c6571f5..6635ace99806139a470ae6a6ea64e020a2cc4eec 100644
--- a/src/puppet-web/firer.ts
+++ b/src/puppet-web/firer.ts
@@ -20,6 +20,10 @@
 /* tslint:disable:no-var-requires */
 const retryPromise  = require('retry-promise').default
 
+import {
+  // RecommendInfo
+}                     from '../config'
+
 import Contact        from '../contact'
 import Message        from '../message'
 import log            from '../brolog-env'
@@ -53,7 +57,7 @@ const regexConfig = {
   , roomTopic:    /^"?(.+?)"? changed the group name to "(.+)"$/
 }
 
-async function fireFriendRequest(m) {
+async function fireFriendRequest(m: Message) {
   const info = m.rawObj.RecommendInfo
   log.verbose('PuppetWebFirer', 'fireFriendRequest(%s)', info)
 
diff --git a/src/puppet-web/friend-request.spec.ts b/src/puppet-web/friend-request.spec.ts
index 2881f04cb76d01395139a0c055e9d02df5f0dadd..f54564596dac67728e67783a3e80a5a2afc2dea3 100644
--- a/src/puppet-web/friend-request.spec.ts
+++ b/src/puppet-web/friend-request.spec.ts
@@ -3,10 +3,12 @@ import { test }   from 'ava'
 import Config   from '../config'
 import Contact  from '../contact'
 import Message  from '../message'
-
+import Puppet   from '../puppet'
 import PuppetWebFriendRequest from './friend-request'
 
-Config.puppetInstance({})
+Config.puppetInstance({
+  userId: 'xxx'
+} as Puppet)
 
 test('PuppetWebFriendRequest.receive smoking test', t => {
   /* tslint:disable:max-line-length */
diff --git a/src/puppet-web/friend-request.ts b/src/puppet-web/friend-request.ts
index b9ad1c5c6389d72d06f503749f193bceaf672214..2d249640b100ecd447aba976eff24ad07c947103 100644
--- a/src/puppet-web/friend-request.ts
+++ b/src/puppet-web/friend-request.ts
@@ -19,18 +19,13 @@
 /* tslint:disable:no-var-requires */
 const retryPromise  = require('retry-promise').default
 
-import Contact       from '../contact'
-import Config        from '../config'
-import FriendRequest from '../friend-request'
-import log           from '../brolog-env'
-
-type RecommendInfo = {
-  UserName:   string
-  NickName:   string
-  Content:    string // request message
-  Ticket:     string // a pass token
-  VerifyFlag: number
-}
+import Contact        from '../contact'
+import {
+    Config
+  , RecommendInfo
+}                     from '../config'
+import FriendRequest  from '../friend-request'
+import log            from '../brolog-env'
 
 class PuppetWebFriendRequest extends FriendRequest {