$ npx create-react-app maDongSeok
Cannot create a project named "maDongSeok" because of npm naming restrictions:

  * name can no longer contain capital letters

Please choose a different project name.
$ npx create-react-app madongseok

Creating a new React app in D:\reactPlayground\madongseok.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template...


added 1489 packages in 2m

258 packages are looking for funding
  run `npm fund` for details

Initialized a git repository.

Installing template dependencies using npm...

added 67 packages, and changed 1 package in 8s

262 packages are looking for funding
  run `npm fund` for details
Removing template package using npm...


removed 1 package, and audited 1556 packages in 3s

262 packages are looking for funding
  run `npm fund` for details

8 vulnerabilities (2 moderate, 6 high)

To address all issues (including breaking changes), run:
  npm audit fix --force

Run `npm audit` for details.
Git commit not created Error: Command failed: git commit -m "Initialize project using Create React App"
    at checkExecSyncError (node:child_process:890:11)
    at execSync (node:child_process:962:15)
    at tryGitCommit (D:\reactPlayground\madongseok\node_modules\react-scripts\scripts\init.js:62:5)
    at module.exports (D:\reactPlayground\madongseok\node_modules\react-scripts\scripts\init.js:350:25)
    at [eval]:3:14
    at runScriptInThisContext (node:internal/vm:144:10)
    at node:internal/process/execution:109:14
    at [eval]-wrapper:6:24
    at runScript (node:internal/process/execution:92:62) {
  status: 128,
  signal: null,
  output: [ null, null, null ],
  pid: 10744,
  stdout: null,
  stderr: null
}
Removing .git directory...

Success! Created madongseok at D:\reactPlayground\madongseok
Inside that directory, you can run several commands:

  npm start
    Starts the development server.

  npm run build
    Bundles the app into static files for production.

  npm test
    Starts the test runner.

  npm run eject
    Removes this tool and copies build dependencies, configuration files
    and scripts into the app directory. If you do this, you can’t go back!

We suggest that you begin by typing:

  cd madongseok
  npm start

Happy hacking!
$