Example module with singletons

gistfile1.txt

module ConfigManager {

  export class Browser {}
	
	export class Config {
		
		name:String;
		
	}

	export class BrowserManager {
	 
	    private static _instance:BrowserManager = null;
	 
		public config:Config;
		
		public browser:Browser;
	
	    constructor() {
			
	        if(BrowserManager._instance){
	            throw new Error("Error: Instantiation failed: Use BrowserManager.getInstance() instead of new.");
	        }
	        BrowserManager._instance = this;
	    }
	 
	    public static getInstance():BrowserManager
	    {
	        if(BrowserManager._instance === null) {
	            BrowserManager._instance = new BrowserManager();
				BrowserManager._instance.config = new Config();
				BrowserManager._instance.browser = new Browser();
	        }
	        return BrowserManager._instance;
	    }
	 
	}
	
}