add escape to json string before send to server

src/puppet-web-bridge.js

@@ -111,8 +111,21 @@ class Bridge {
    * Proxy Call to Wechaty in Bridge
    */
   proxyWechaty(wechatyFunc, ...args) {
-    //const args      = Array.prototype.slice.call(arguments, 1)
-    const argsJson  = JSON.stringify(args)
+    function escape (key, val) {
+     if (typeof(val)!="string") return val;
+      return val      
+        .replace(/[\\]/g, '\\\\')
+        .replace(/[\/]/g, '\\/')
+        .replace(/[\b]/g, '\\b')
+        .replace(/[\f]/g, '\\f')
+        .replace(/[\n]/g, '\\n')
+        .replace(/[\r]/g, '\\r')
+        .replace(/[\t]/g, '\\t')
+        .replace(/[\"]/g, '\\"')
+        .replace(/\\'/g, "\\'")
+    } // http://stackoverflow.com/a/14137856/1123955
+    const argsJson  = JSON.stringify(args, escape)
+    
     const wechatyScript = `return (Wechaty && Wechaty.${wechatyFunc}.apply(undefined, JSON.parse('${argsJson}')))`
 
     log.silly('Bridge', 'proxyWechaty: ' + wechatyScript)