When update to react 19, some test cases was throw error ReferenceError: MessageChannel is not defined. I try to find solution on the internet but seem like no one have issue like me.
finally, I found solution to fix it base on this link:
My solution is add "react-dom/server": "react-dom/server.edge" to moduleNameMapper in the file jest.config.ts (or jest.config.js)
...
moduleNameMapper: {
...
"react-dom/server": "react-dom/server.edge",
},
...
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