fix bug in subscribe with param

src/Frontend.ts

@@ -96,6 +96,7 @@ export class RPCSocket implements I.Socket{
         const info:T.ExtendedRpcInfo[] = await this.info()
         info.forEach(i => {
             let f: any
+            
             switch (i.type) {
                 case 'Call':
                     f = this.callGenerator(i.uniqueName, i.argNames, sesame)    
@@ -138,14 +139,18 @@ export class RPCSocket implements I.Socket{
      * @param fnArgs A string-list of parameters
      */
     private frontEndHookGenerator(fnName: string, fnArgs:string[], sesame?:string): T.HookFunction{
-        fnArgs.pop()
+        
+        if(sesame)
+            fnArgs.shift()
+
         let headerArgs = fnArgs.join(",")
         const argParams = fnArgs.map(stripAfterEquals).join(",")
-        sesame = appendComma(sesame)
-        headerArgs = appendComma(headerArgs) 
+        sesame = appendComma(sesame, true)
+        headerArgs = fnArgs.length>0?headerArgs+",":headerArgs 
 
         return eval( `
         async (${headerArgs} callback) => {
+
             const r = await this.socket.call("${fnName}", ${sesame} ${argParams})
             if(r && r.result === 'Success'){
                 this.socket.hook(r.uuid, callback)

src/Utils.ts

@@ -115,7 +115,7 @@ const hookGenerator = (rpc:T.HookRPC<any, any, any>, errorHandler: T.ErrorHandle
     const args = sesameFn?(['sesame', ...argsArr].join(','))
                          :callArgs
 
-    callArgs = appendComma(callArgs)
+    callArgs = appendComma(callArgs, false)
 
     //note rpc.hook is the associated RPC, not a socket.hook
     return eval(`
@@ -143,7 +143,8 @@ const makeError = (callName: string) => {
  */
 const extractArgs = (f:Function):string[] => {
     let fn:string
-    return (fn = String(f)).substr(0, fn.indexOf(")")).substr(fn.indexOf("(")+1).split(",")
+    fn = (fn = String(f)).substr(0, fn.indexOf(")")).substr(fn.indexOf("(")+1)
+    return fn!==""?fn.split(',') : []
 }
 
 /**
@@ -170,8 +171,10 @@ export function makeSesameFunction (sesame : T.SesameFunction | string) : T.Sesa
 }
 
 
-export function appendComma(s?:string):string{
-    return s?`'${s}',`:"" 
+export function appendComma(s?:string, turnToString = true):string{
+    if(turnToString)   
+        return s?`'${s}',`:"" 
+        return s?`${s},`:"" 
 }