diff --git a/.gitignore b/.gitignore
index b27be8d0be82b00c9ea34fd88fa219af7f6a2f39..59d220bec6aa730350a94f96fe86ab912a9b0ec3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,7 +41,7 @@ coverage
 .nyc_output
 
 # Wechaty session file
-*.wechaty.json
+demo.wechaty.json
 
 # Cloud 9
 .c9/
diff --git a/src/config.spec.ts b/src/config.spec.ts
index 13ee61d850adf9868be1ad557c0954666d72e1ff..0d7cdcd356492842b362d8dc1ba2454c7d51b118 100644
--- a/src/config.spec.ts
+++ b/src/config.spec.ts
@@ -8,7 +8,7 @@
 import { test }   from 'ava'
 
 import {
-    Config
+  Config
 }                 from './config'
 import { Puppet } from './puppet'
 
diff --git a/src/puppet-web/browser-cookie.ts b/src/puppet-web/browser-cookie.ts
index e6d6c3dd003a8ee2c3bda415715f7af9dfb81f1b..d18b2893df8a6c454d236ca5cd070e6297b7adf9 100644
--- a/src/puppet-web/browser-cookie.ts
+++ b/src/puppet-web/browser-cookie.ts
@@ -33,7 +33,10 @@ export type CookieType = {
 }
 
 export class BrowserCookie {
-  constructor(private driver: BrowserDriver, private storeFile?: string) {
+  constructor(
+    private driver: BrowserDriver,
+    private storeFile?: string,
+  ) {
     log.verbose('PuppetWebBrowserCookie', 'constructor(%s, %s)'
                                         , driver.constructor.name
                                         , storeFile ? storeFile : ''