Yarn watch failed with "'cross-env' is not recognized as an internal or external command"

On a fresh clone on a Windows system, running yarn watch fails with the following error:

PS C:\Projects\OSS\react-browser-extension-boilerplate-master> yarn watch
yarn run v1.22.10
$ cross-env NODE_ENV=development yarn webpack -c webpack.config.js --mode development -w
'cross-env' is not recognized as an internal or external command,
operable program or batch file.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I installed cross-env manually: npm install -g cross-env

Then I started to see a different error:

yarn run v1.22.10
$ cross-env NODE_ENV=development yarn webpack -c webpack.config.js --mode development -w
error Command "webpack" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[uluhonolulu]

OK, that was it, now it works. Perhaps you want to add it to the README so that the next noob won’t bug you with the same issue.

[ElForastero]

Shouldn’t I run yarn install or something like that? I’ve been sitting in the npm universe for too long I guess.

That’s it 😃

Yarn is much like npm. You should clone repo and then execute yarn install to install all dependencies.

You can use npm instead of yarn. Just replace yarn webpack with npm webpack.