You can patch @types/foo locally for your app by patch-package.
-
Run
npm i -D patch-package -
Simply modify
node_modules/@types/footo suit your needs. -
Run
npx patch-package @types/foo. This creates a diff file inpatches/that records the changes made from the last step. -
Add
"scripts": {"postinstall": "patch-package"}inpackage.json. This make patches to be applied each time people runnpm install.