React.lazy + chunk errors: how to recover users stuck after a deploy
A common issue in React applications occurs when users encounter chunk load errors after a new deployment. This happens when the user's browser has cached an old version of the HTML, leading to a blank screen when trying to access a route. A proposed solution involves implementing a global error listener that automatically reloads the page with a cache-busting parameter to ensure users receive the latest version.
- ▪React.lazy() can cause errors when users have cached old HTML after a deployment.
- ▪A global error listener can be used to detect chunk load errors and force a page reload.
- ▪The cache-bust parameter ensures that users receive the updated content without manual intervention.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3948401) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Dk Usa Posted on May 24 React.lazy + chunk errors: how to recover users stuck after a deploy #javascript #react #webdev #frontend Classic React production bug: you deploy a new bundle, user has the old HTML cached in their tab, they navigate to a route → React.lazy() tries to import a chunk that no longer exists on the CDN → blank screen.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
Discussion
0 commentsMore from DEV.to (Top)
