react-dnd-html5-backend/lib/getEmptyImage.js

let emptyImage;
export function getEmptyImage() {
    if (!emptyImage) {
        emptyImage = new Image();
        emptyImage.src =
            'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';
    }
    return emptyImage;
}