From mobx-react official doc resource as a guide. We concluded that mobx(5*) + mobx-react (6*) versions are compatible for react 18 version. But after updating our repo we got some issues related to React 18: observer not working with React Class components <React.StrictMode>
Our Versions
"mobx": "5.15.0",
"mobx-react": "6.1.4",
"react": "18.2.0",
Are mobx(5*) and mobx-react(6*) versions compatible with react 18? If not, What are the compatible versions of mobx and mobx-react that can be used when using React 18?
We concluded that mobx(5*) + mobx-react (6*) versions are compatible for react 18 version.
How you made this conclusion? It clearly says that mobx-react v6 only supports >16.8 <18 React, and <18 means that React version 18 is not supported.
| NPM Version | Support MobX version | Supported React versions | Supports hook based components |
|---|---|---|---|
| v7 | 6.* | >16.8 | Yes |
| v6 | 4.* / 5.* | >16.8 <18 | Yes |
| v5 | 4.* / 5.* | >0.13 <18 | No, but it is possible to use <Observer> sections inside hook based components |
So your only option is mobx-react@7 and mobx@6.
EDIT: Oh, I see that matrix was just updated because you also asked this question on Github Discussions, and before it stated different information, so it's not your fault at all, sorry.