图片失败后继续加载阅读页并支持单图重试

src/utils/progressiveImages.js

@@ -0,0 +1,23 @@
+function imageItem(url, index) {
+    return {url, src: url, index, attempt: 0, failed: false, settled: false}
+}
+
+export function startImages(urls) {
+    return urls.length ? [imageItem(urls[0], 0)] : []
+}
+
+export function settleImage(items, urls, item, failed = false) {
+    // Ignore events from images removed by a page change or dialog close.
+    if (!items.includes(item)) return
+    item.failed = failed
+    if (item.settled) return
+    item.settled = true
+    if (items.length < urls.length)
+        items.push(imageItem(urls[items.length], items.length))
+}
+
+export function retryImage(item) {
+    item.failed = false
+    item.attempt++
+    item.src = item.url + (item.url.includes('?') ? '&' : '?') + 'retry=' + item.attempt
+}