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Replace ReactDOM.render with createRoot for React 18
npx codemod react-19-replace-reactdom-render
Replace ReactDOM.render and named render imports with createRoot(...).render(...).
bash
This is one example from the codemod's test cases. The codemod may handle many more cases.
Build your own codemod and share it with the community.
1 import { render } from "react-dom";
2
3 describe("suite", () => {
4 const run = () => {
5 render(<Component />, theNode);
6 };
7 });
8