Function upload

app/page.tsx:26–39

(url: string, file: File, onProgress: (event: ProgressEvent<EventTarget>) => void)

    }

    function upload(url: string, file: File, onProgress: (event: ProgressEvent<EventTarget>) => void) {
        return new Promise((res, rej) => {
            const xhr = new XMLHttpRequest();
            xhr.open('PUT', url);

            xhr.onload = e => {
                res("")
            };
            xhr.onerror = rej;
            if (xhr.upload && onProgress)
                xhr.upload.onprogress = onProgress;
            xhr.send(file);
        });
    }

    useEffect(() => {
        if (file === null) return