TypeScript: access static method of a class

Question

Still new at TypeScript so this question may sound dumb to some of you. I have a ToolTip class like this:

class ToolTip{
    public static show (str:string):void{
        console.log ("ToolTip show():" + str);
    }
    public static hide():void{
        console.log ("ToolTip hide()");
    }
}
export = ToolTip;

And I want to call it from another class

import ToolTip = require ("app/view/common/Tooltip");

class Button  {
......
    private handleMouseEvent(event:MouseEvent):void {
        switch (event.type) {
            case "mouseover":
                ToolTip.show("tool tip string");
                break;
            case "mouseout":
                ToolTip.hide();
                break;            
        }
    }
......
}

export = MenuItem;

But it gives me this error:

Uncaught TypeError: Object app/view/common/Tooltip has no method 'show'

Any idea how to fix this?

Answer 1

As you can see the code works fine (compiles and runs) :

So possible reasons why it would not work for you :

• You did not compile with the --module commonjs option (Video Tutorial)
• You have a folder named TootTip at the same level as Tooltip.ts which can cause nodejs to run what you might not have expected.