Why this Factory function is not working?

I am writing this factory function in the index.js file. But it is not working. In the console it is showing that the ‘rectangle1’ is undefined. Please find the error.

function createRectangle(len,bre) {
    let rectangle = {
        length: len,
        breadth: bre,
   
        draw: function() {
            console.log('drawing rectangle');
        }
    };
    return rectangle;
}

let rectangleObj1 = createRectangle(5,4);