add isC9 to env

ts/smartenv.classes.helpers.ts

@@ -17,11 +17,7 @@ export var getUserAgentString = function():string{
 };
 
 export var isNode = function():boolean {
-    if (getEnvString() === "node"){
-        return true;
-    } else {
-        return false;
-    }
+    return getEnvString() === "node"
 };
 
 export var getNodeVersion = function():string {
@@ -40,6 +36,14 @@ export var isCI = function(){
     };
 };
 
+export var isC9 = function(){
+    if (process.env.C9_HOSTNAME){
+        return true;
+    } else {
+        return false;
+    }
+};
+
 export var isTravis = function(){
     if(process.env.TRAVIS){
         return true;

ts/smartenv.classes.ts

@@ -9,6 +9,7 @@ export class Environment {
     nodeVersion:string;
     isCI:boolean;
     isTravis:boolean;
+    isC9:boolean;
     constructor() {
         this.runtimeEnv = helpers.getEnvString();
         this.isBrowser = helpers.isBrowser();
@@ -17,5 +18,6 @@ export class Environment {
         this.nodeVersion = helpers.getNodeVersion();
         this.isCI = helpers.isCI();
         this.isTravis = helpers.isTravis();
+        this.isC9 = helpers.isC9();
     };
 }