diff --git a/.gitignore b/.gitignore
index d7ed71db50cbc0584c04fd4e9b108288e274ec51..bbd97061a3bbc9f8dfbb73a18f3e8f6ddf0eba02 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,3 +52,4 @@ t/
 t.*
 .DS_Store
 /dev.js
+/dist/
diff --git a/src/io-client.ts b/src/io-client.ts
index e546b7f110bd8323be7f09ae28823f30b530de04..b14805ceb7a36d100adf1074d42acc612d7dfdeb 100644
--- a/src/io-client.ts
+++ b/src/io-client.ts
@@ -80,7 +80,7 @@ class IoClient {
     this.targetState('connected')
     this.currentState('connecting')
 
-    this.wechaty  = new Wechaty({
+    this.wechaty  = Wechaty.instance({
       profile: Config.DEFAULT_PROFILE
     })
 
@@ -165,7 +165,7 @@ class IoClient {
       res.send('Wechaty IO Bot Alive!')
     })
 
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve) => {
       app.listen(port, () => {
         this.log.verbose('IoClient', 'initWeb() Wechaty IO Bot listening on port ' + port + '!')
 
diff --git a/src/puppet.ts b/src/puppet.ts
index 5f9859fc42a38d9a0ea7765bc9eb68c75b3b9ee2..d42c1fa49c9825a01a39eb9ea6a8c6314e1db395 100644
--- a/src/puppet.ts
+++ b/src/puppet.ts
@@ -17,9 +17,9 @@ import Message  from './message'
 import Room     from './room'
 import log      from './brolog-env'
 
-type ContactGetterFunc = {
-  (id: string): Promise<any>
-}
+// type ContactGetterFunc = {
+//   (id: string): Promise<any>
+// }
 
 abstract class Puppet extends EventEmitter {
   public user: Contact
diff --git a/src/wechaty.ts b/src/wechaty.ts
index 4e4eedd458b30d3d5205eb0b37dbe880f5052652..9712c540730259de8dbe578daaa0ba8980b789b8 100644
--- a/src/wechaty.ts
+++ b/src/wechaty.ts
@@ -44,6 +44,16 @@ class Wechaty extends EventEmitter {
 
   public uuid:        string
 
+  public static instance(setting?: WechatySetting) {
+    if (setting && this._instance) {
+      throw new Error('there has already a instance. no params allowed any more')
+    }
+    if (!this._instance) {
+      this._instance = new Wechaty(setting)
+    }
+    return this._instance
+  }
+
   private constructor(private setting: WechatySetting) {
     super()
     log.verbose('Wechaty', 'contructor()')
@@ -72,13 +82,6 @@ class Wechaty extends EventEmitter {
     // Wechaty._instance = this
   }
 
-  public static instance(setting: WechatySetting) {
-    if (!this._instance) {
-      this._instance = new Wechaty(setting)
-    }
-    return this._instance
-  }
-
   public toString() { return 'Class Wechaty(' + this.setting.type + ')'}
 
   public version(forceNpm = false) {
diff --git a/tsconfig.json b/tsconfig.json
index b83b6a8061bd75ee37b5002f6c2a91114f76c092..2f67c145fd230b8e82f4b7f4e25387a308b340ec 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,20 +1,30 @@
 {
   "compilerOptions": {
     "target": "es6"
+    , "module": "amd"
     , "moduleResolution": "node"
     , "outDir": "dist"
-    , "noImplicitAny": false
-    , "strictNullChecks": true
+    , "outFile": "dist/wechaty.lib.js"
+
     , "sourceMap": true
+    , "noUnusedLocals": true
+
+    , "noUnusedParameters": false
+    , "strictNullChecks": false
+    , "noImplicitAny": false
+    , "noImplicitThis": false
+    , "noImplicitReturns": false
+    , "noFallthroughCasesInSwitch": false
   }
   , "exclude": [
       "node_modules"
     , "dist"
+    , "**/*.spec.ts"
   ]
-  , "files": [
-      "src/*.ts"
-    , "bin/*.ts"
-    , "example/*.ts"
+  , "include": [
+      "src/**/*.ts"
+    // , "bin/*.ts"
+    // , "example/*.ts"
     // , "test/*.ts"
   ]
 }