●Change8

Migrating to React v19.1.3

Version v19.1.3 introduces 1 breaking change. This guide details how to update your code.

Released: 12/11/2025

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Breaking Changes
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Migration Steps
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Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

react-server-dom-webpackreact-server-dom-unbundledServer Functions

Breaking Changes

●Issue #1

The `react-server-dom-webpack/*.unbundled` entry points have been moved to a private package `react-server-dom-unbundled`. Direct imports from the webpack-specific unbundled path will no longer work.

Migration Steps

  1. 1
    Update imports referencing `react-server-dom-webpack/*.unbundled` to use the new internal structure or appropriate public APIs if available.

Release Summary

This release updates React Server Components by moving unbundled webpack entry points to a private package and improving Server Function stability with Promise cycle patching and toString support.

Need More Details?

View the full release notes and all changes for React v19.1.3.

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