create-react-app: Error: spawn yarnpkg ENOENT

Can you reproduce the problem with latest npm?

I’m using yarn

Description

creating a new projet with create-react-app produces an error and the resulting projet is not working

Expected behavior

create-react-app testProject should finish without any errors and create a working project

Actual behavior

create-react-app testProject terminates with the following error

Installing react and react-dom using yarnpkg…

events.js:160 throw er; // Unhandled ‘error’ event ^

Error: spawn yarnpkg ENOENT at exports._errnoException (util.js:1022:11) at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32) at onErrorNT (internal/child_process.js:359:16) at _combinedTickCallback (internal/process/next_tick.js:74:11) at process._tickCallback (internal/process/next_tick.js:98:9)

Environment

Run these commands in the project folder and fill in their results:

1. npm ls react-scripts (if you haven’t ejected): > $ npm ls react-scripts testProj@0.1.0 /home/beac0n/dev/testProj └── react-scripts@0.8.5
2. node -v: > $ node -v v7.4.0
3. npm -v: > $ npm -v 4.1.1 > $ yarn --version 0.19.1

Then, specify:

1. Operating system: Arch Linux
2. Browser and version: Can’t start the project - getting errors:

Failed to compile.

Error in ./src/index.js Module not found: ‘react’ in /home/beac0n/dev/testProj/src

@ ./src/index.js 5:13-29

Error in ./src/App.js Module not found: ‘react’ in /home/beac0n/dev/testProj/src

@ ./src/App.js 10:13-29

Error in ./src/index.js Module not found: ‘react-dom’ in /home/beac0n/dev/testProj/src

@ ./src/index.js 9:16-36

Potential Fix

I could actually fix the issue, by executing: sudo ln -s /usr/lib/node_modules/yarn/bin/yarn.js yarnpkg in my /usr/bin/ directory.

It seems like create-react-app tries to use the command yarnpkg wich was not available on my arch linux system, although I installed yarn as described here: https://yarnpkg.com/en/docs/install#alternatives-tab

I’m not sure if this is an issue with my operating system, with yarn or with create-react-app. The issue only occurs when using create-react-app