root
18011a7892
Listen for vite:preloadError and router onError, force a one-shot reload (10s cooldown via sessionStorage) when a hashed lazy-loaded module 404s because a new deploy replaced it. Eliminates the user-visible "Failed to fetch dynamically imported module" error on login and route navigation. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
55 lines
1.3 KiB
TypeScript
55 lines
1.3 KiB
TypeScript
const RELOAD_FLAG_KEY = '__chunk_reload_at'
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const RELOAD_COOLDOWN_MS = 10_000
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function shouldReload(): boolean {
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try {
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const raw = sessionStorage.getItem(RELOAD_FLAG_KEY)
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if (!raw) return true
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const at = Number(raw)
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if (!Number.isFinite(at)) return true
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return Date.now() - at > RELOAD_COOLDOWN_MS
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} catch {
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return true
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}
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}
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function markReload(): void {
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try {
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sessionStorage.setItem(RELOAD_FLAG_KEY, String(Date.now()))
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} catch {
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// ignore storage failures (private mode, quota)
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}
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}
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export function reloadForStaleChunk(): boolean {
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if (!shouldReload()) return false
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markReload()
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location.reload()
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return true
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}
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const CHUNK_ERROR_PATTERNS = [
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/Failed to fetch dynamically imported module/i,
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/error loading dynamically imported module/i,
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/Importing a module script failed/i,
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/Unable to preload CSS/i,
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]
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export function isChunkLoadError(err: unknown): boolean {
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const msg =
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err instanceof Error
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? err.message
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: typeof err === 'string'
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? err
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: ''
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return CHUNK_ERROR_PATTERNS.some((re) => re.test(msg))
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}
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export function registerChunkReloadHandlers(): void {
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window.addEventListener('vite:preloadError', (event) => {
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if (reloadForStaleChunk()) {
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event.preventDefault()
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}
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})
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}
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