Upgrade from 22.5.1 to 22.6.0 fails with error `/bin/sh: 1: babel: not found`

[tmorehouse]

After upgrading to 22.6.0, we get the following build error when installing eslint-plugin-jest:

error /root/project/bootstrap-vue/node_modules/eslint-plugin-jest: Command failed.
Exit code: 1
Command: yarn build
Arguments: 
Directory: /root/project/bootstrap-vue/node_modules/eslint-plugin-jest
Output:
yarn run v1.13.0
$ babel --extensions .js,.ts src --out-dir lib
/bin/sh: 1: babel: not found
error Command failed with exit code 127.

Fails due to the postinstall command introduced via #257 which tries to compile files with babel.

[quarties]

I can confirm that issue - rolling back to version 22.5.1 can fix that.

[mdavis199]

I think the problem is because @babel/cli is listed as a devDependency; but babel is being used during the installation of eslint-plugin-jest when the post-install script is run. So, babel is no longer a devDependency; it's required for installation.

[swissspidy]

I am getting a similar issue, but in my case it's yarn that is not installed, not babel. So it fails earlier.

[shazron]

This is the commit that introduced the build issue I believe: https://github.com/jest-community/eslint-plugin-jest/pull/257/commits
I don't have yarn installed globally, so it fails

[ranyitz]

Running build during pretest solves the issue while enabling transpilation before running the tests. This PR should do the trick -#265