webpack-cli@4 exits with 0 even when failing

[fregante]

Bug report

$ webpack should exit with a non-0 code when it finds an error in webpack.config.js

What is the current behavior?

$ webpack exits with 0 even if it throws a fatal error:

If the current behavior is a bug, please provide the steps to reproduce.

npm install -g webpack webpack-cli@4
echo '.' > webpack.config.js
webpack

Notice that webpack’s version is irrelevant. webpack-cli is the problem

What is the expected behavior?

webpack-cli@3 worked correctly, it exited with 1.

Other relevant information:
webpack version: 4 or 5 (webpack version irrelevant)
webpack-cli version: 4.1.0
Node.js version: v13.8.0
Operating System: macOS 10.15.4
Additional tools:

[webpack-bot]

For maintainers only:

• webpack-4
• webpack-5
• bug
• critical-bug
• enhancement
• documentation
• performance
• dependencies
• question

[snitin315]

Thanks for the report I'm looking into it.

[snitin315]

Working fine for me.

[fregante]

I don't know where you're testing because it doesn't work anywhere for me. Here's a plain GitHub Action workflow where CI passes even if webpack fails: https://github.com/fregante/webpack-issue-11789/runs/1296100000?check_suite_focus=true

name: CI
on: [push]
jobs:
  build:
    runs-on: ubuntu-latest
    steps: 
      - run: npm install webpack webpack-cli@4
      - run: echo '.' > webpack.config.js
      - run: npx webpack

[snitin315]

Just added a test case for the same in #1979

[fregante]

The tests in that PR pass while my repro code still shows the issue on both GitHub Actions and my computer.

This means that the test effectively isn’t testing the same thing/environment.

[fregante]

Here’s another workflow testing every major version of webpack-cli. Every version correctly fails except v4

https://github.com/fregante/webpack-issue-11789/runs/1297087059?check_suite_focus=true

[fregante]

It's possible that #1971 fixed it just a couple of days ago but hasn't been pushed yet 🍰

[snitin315]

can you try with the master branch?

[fregante]

I tried but it's a monorepo, I don't know how to npm install that

[snitin315]

You can create a symlink with npm link webpack-cli

[alexander-akait]

@fregante Can you create reproducible test repo, i think fixed in master

[fregante]

@evilebottnawi it's https://github.com/fregante/webpack-issue-11789

The repro is in GitHub Actions, it's only 3 lines:

npm install webpack webpack-cli@4
echo '.' > webpack.config.js
npx webpack

[benmvp]

Just ran into this problem. Upgraded to 4.2.0 and verified it worked. Thanks for the fix @snitin315!