create-react-app JavaScript project to TypeScript
Add dependencies
npm add -D typescript @types/react @types/node @types/react-dom @types/jest
Delete node_modules and reinstall everything
npm i
Use CMD change file name
windows bat
@echo off
rem Searching...
for /f "delims=" %%i in ('dir /b /a-d /s "*.js"') do ren "%%i" "%%~ni.ts"
rem Done
@pause