Function urlToBlobWithFetch

Picviewer CE+/dist.user.js:12401–12431

(urlString, cb)

        img.src = dataurl;
    }
    function urlToBlobWithFetch(urlString, cb){
        fetch(urlString).then(response => response.blob()).then(blob => {
            let ext = extFromMimeAndUrl(blob.type, urlString);
            if (blob.type && blob.type.indexOf("text/html") === 0 && (blob.size || 0) < 1000) return cb(null, '');
            if (ext === "none") ext = "webp";
            let conversion = formatDict.get(ext);
            if (canvas && conversion) {
                var self = this;
                var a = new FileReader();
                a.readAsDataURL(blob);
                a.onload = function (e) {
                    dataURLToCanvas(e.target.result, canvas => {
                        canvas.toBlob(nblob => {
                            if (!nblob) {
                                cb(blob);
                            } else {
                                cb(nblob, conversion || "png");
                            }
                        }, "image/" + (conversion || "png"));
                    });
                };
                a.onerror = function (e){
                    cb(blob);
                }
            } else {
                cb(blob, ext);
            }
        }).catch(error => {
            cb(null);
        });
    }
    function loadVideoJsLibrary() {
        if (!window.videoJsStatus) {
            window.videoJsStatus = 'none';