Added AsyncFunction class

app.js

@@ -98,7 +98,13 @@ var console = {
 
         // after calling echo
         if (['error', 'info', 'warn'].indexOf(type) > -1 && typeof this._echoCallback === "function") {
+			try {
 				this._echoCallback(params);
+			} catch (e) {
+                if (typeof WScript !== "undefined") {
+                    WScript.echo("  * Exception of _echoCallback:", e.message);
+                }
+			}
         }
     },
     assert: function(assertion) {

lib/file.js

@@ -213,6 +213,10 @@ function includeFile(FN) {
     eval(fileData);
 }
 
+function appendFile(FN, content, charset) {
+    return writeFile(FN, readFile(FN, charset) + content, charset);
+}
+
 exports.fileExists = fileExists;
 exports.folderExists = folderExists;
 exports.fileGet = fileGet;
@@ -224,3 +228,4 @@ exports.createFolder = createFolder;
 exports.deleteFolder = deleteFolder;
 exports.deleteFile = deleteFile;
 exports.includeFile = includeFile;
+exports.appendFile = appendFile;

lib/std.js

@@ -306,6 +306,16 @@ function StdEventableObject() {
     };
 };
 
+function AsyncFunction(f) {
+    this.f = f;
+    this.run = function() {
+        sleep(1, this.f);
+    };
+    this.runSynchronously = function() {
+        return this.f();
+    };
+};
+
 global.GetResource = GetResource;
 global.sleep = sleep;
 global.repeat = repeat;
@@ -314,6 +324,7 @@ global.range = range;
 global.CHR = CHR;
 global.splitLn = splitLn;
 global.addslashes = addslashes;
+global.AsyncFunction = AsyncFunction;
 
 exports.VERSIONINFO = "Standard Lib (std.js) version 0.4";
 exports.global = global;

lib/websocket.js

@@ -39,8 +39,8 @@ var WebsocketObject = function() {
                 this.binPath,
                 "-n1",
                 "-t",
-                "--ping-timeout",
+                //"--ping-timeout",
-                1,
+                //1,
                 uri,
                 "<",
                 FN