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xiaoxia-saas/apps/web/src/utils/chunkLoadError.ts
T
xiaoxia 9a289e1e1f
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fix: 发版后懒加载 chunk 失效白屏——ErrorBoundary 自动刷新 + lazy 重试 (#1732)
Co-authored-by: xiaoxia <dev@xiaoxiajianji.com>
Co-committed-by: xiaoxia <dev@xiaoxiajianji.com>
2026-09-06 13:35:35 +08:00

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TypeScript
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/**
* 发版后旧标签页懒加载 chunk 失效(白屏)的识别与恢复工具。
*
* 背景:页面 React Router 的 lazy 动态 import,发版后旧 chunk 文件名被删除,
* 停留在旧标签页的用户点菜单时 import 404,抛出
* "Failed to fetch dynamically imported module"(Vite)/ ChunkLoadError,
* 不捕获就是整页白屏。
*/
/** sessionStorage 标记:最近已经为 chunk 失效自动刷新过一次(带时间戳,10min 有效) */
const RELOAD_FLAG_KEY = "chunk_error_reloaded_at"
/** 标记有效期:超过后允许再次自动刷新,避免用户手动正常刷新后标记永久残留 */
const RELOAD_FLAG_TTL_MS = 10 * 60 * 1000
/**
* Storage 在 Safari 无痕模式 / 禁用 Cookie 的浏览器 / 严格 iframe 策略下
* 访问可能抛异常;此处统一容错,拿不到存储就降级为"无标记",绝不能让
* 错误边界本身因读存储而崩溃。
*/
const safeStorage = {
getItem: (key: string): string | null => {
try {
return sessionStorage.getItem(key)
} catch {
return null
}
},
setItem: (key: string, value: string): void => {
try {
sessionStorage.setItem(key, value)
} catch {
/* 存储不可用时静默降级:仅丢失"已刷新"标记,不影响恢复动作 */
}
},
removeItem: (key: string): void => {
try {
sessionStorage.removeItem(key)
} catch {
/* ignore */
}
},
}
/** 判断错误是否为懒加载 chunk 加载失败(发版 404 / 网络中断 / 动态 import 失败) */
export const isChunkLoadError = (error: unknown): boolean => {
if (!error) return false
// Vite: Failed to fetch dynamically imported module: /assets/xxx-yyy.js
// Webpack: ChunkLoadError: Loading chunk xxx failed.
const needle =
error instanceof Error
? `${error.name} ${error.message}`
: typeof error === "string"
? error
: ""
return /failed to fetch dynamically imported module|chunkloaderror|loading chunk \d+ failed|error loading dynamically imported module|importing a module script failed/i.test(
needle,
)
}
/** 读取上次自动刷新时间戳;过期或不存在返回 null */
export const getChunkReloadedAt = (): number | null => {
const raw = safeStorage.getItem(RELOAD_FLAG_KEY)
if (!raw) return null
const ts = Number(raw)
if (!Number.isFinite(ts)) return null
if (Date.now() - ts > RELOAD_FLAG_TTL_MS) return null
return ts
}
/** 标记"已为 chunk 失效自动刷新过",然后刷新页面 */
export const reloadForChunkError = (): void => {
safeStorage.setItem(RELOAD_FLAG_KEY, String(Date.now()))
window.location.reload()
}
/**
* 硬恢复:清掉标记后回到首页(整页导航,不是当前 URL 刷新)。
* - chunk 失效兜底:回到首页会拉取最新 index.html,彻底脱离旧 chunk 引用
* - 非 chunk 的页面级崩溃:跳首页能绕开当前报错路由,避免"刷新-再崩"死循环
*/
export const goHomeRecover = (): void => {
safeStorage.removeItem(RELOAD_FLAG_KEY)
window.location.href = "/"
}