Update to React 19.2

[tom-ricci]

pixi-react is currently using react-reconciler@0.31.0 which breaks when components using React 19.2 features are rendered inside an <Application>. I'm working around this right now by overriding react-reconciler with version 0.33.0 with pnpm, but it would be great for there to be official support for 19.2.

[aazucena]

I'm experiencing the same issue with React 19.2. Getting an ESM module resolution error at runtime when importing from @pixi/react:

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/websites/node_modules/.pnpm/@pixi+react@8.0.3_@types+react@19.2.0_pixi.js@8.14.0_react@19.2.0/node_modules/react-reconciler/constants' imported from /websites/node_modules/.pnpm/@pixi+react@8.0.3_@types+react@19.2.0_pixi.js@8.14.0_react@19.2.0/node_modules/@pixi/react/lib/store.mjs
Did you mean to import "react-reconciler/constants.js"?

The error specifically calls out that store.mjs is importing react-reconciler/constants without the .js extension.

Environment:

• @pixi/react: 8.0.3
• pixi.js: 8.2.6
• react: 19.2.0
• typescript: 5.9.3
• astro: 5.14.6 (using @astrojs/react 4.40.0)
• Package manager: pnpm

Reproduction:

import { Application } from '@pixi/react';

This suggests that in addition to updating the react-reconciler version, the package may also need to add explicit .js extensions to ESM imports to be fully compatible with React 19.2 and strict ESM resolution environments.

I have also tried the react-reconciler@0.33.0 override workaround but the ESM import error persists, suggesting the missing .js extensions need to be fixed directly in the @pixi/react source code.

[thejustinwalsh]

@tom-ricci Unclear on the timeline for 19.2 at the moment. I am assuming that the new Activity component will require updates to the reconciler and this is a current topic of research.

@aazucena see #614