I get value {width: 0, height: 0}. How to reach value ?

function getImageSize(file) {
    if (/\.(jpe?g|png|gif)$/i.test(file.name)) {
        var reader = new FileReader();
        var read = reader.onload = () => {
            var image = new Image();
            var value = image.onload = () => {
                var size = { width: image.width, height: image.height };
                return size;
            }
            image.src = reader.result;
            return value();
        }
        reader.readAsDataURL(file);

        return (read());
    }
}