create-react-app with --typescript doesn't work

[ZeJ0hn]

Is this a bug report?

Yes

Did you try recovering your dependencies?

Yes

Environment

  System:
    OS: macOS 10.14.2
    CPU: x64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
  Binaries:
    Node: 8.12.0 - /usr/local/bin/node
    npm: 6.7.0 - ~/.npm-packages/bin/npm
  Browsers:
    Chrome: 72.0.3626.81
    Safari: 12.0.2
  npmPackages:
    react: ^16.7.0 => 16.7.0 
    react-dom: ^16.7.0 => 16.7.0 
    react-scripts: 2.1.3 => 2.1.3 
  npmGlobalPackages:
    create-react-app: 2.0.2

Steps to Reproduce

When I create a new project using npx create-react-app project-geo-semantic-react --typescript, the generate app in a Javascript App and not a Typescript App.
For example, the package.json doesn't contains typescript dependencies :

  "dependencies": {
    "react": "^16.7.0",
    "react-dom": "^16.7.0",
    "react-scripts": "2.1.3"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },

Expected Behavior

Using --typescript parameters, a configured typescript project is generated.

Actual Behavior

Using --typescript parameters, the generated project is not configured for use typescript.
I need to manually add typescript support on my project.

[mrmckeb]

Hello @ZeJ0hn, this is common problem, and I think we've updated our docs recently to solve this.

First, I'd recommend not having a globally installed create-react-app package. But, if you must, you need to update it for this to work.

If you can remove it, do so, and then running yarn create react-app --typescript or npx create-react-app --typescript will work for you.

Sorry for the inconvenience.