[BUG]: webpack-cli@4.0.0-beta.1 no longer supports function-export-based webpack.config.js

[wood1986]

Describe the bug

When my webpack.config.js is exporting a function instead of a simple object. Webpack won't recognize my config anymore. I have checked your test case on your next branch and I do not see any webpack.config.js which is exporting a function. When I export an object, it works Are you work in progress? Or Will you deprecate that kind of export?

What is the current behavior?

See the previous

To Reproduce

use this webpack.config.js

module.exports = (env, argv) => {
  return {
    "entry": {
      "web.index": path.resolve(__dirname, "src", "web.index.jsx")
    },
    "output": {
      "filename": `[name].${argv.mode}.[chunkhash].js`,
      "libraryTarget": "umd",
      "path": path.resolve(__dirname, "dist")
    }
  }
}

and then run

webpack-cli --config=./webpack.config.js

Expected behavior
/

Screenshots
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Please paste the results of webpack-cli info here, and mention other relevant information

webpack: next
webpack-cli: 4.0.0-beta.1
node: 13.1.0
OS: macOS 10.15.1

Additional context
/

[wood1986]

Add @TheLarkInn

[TheLarkInn]

cc @evenstensberg this is considered a release-blocking bug.

[evenstensberg]

Considered!

[evenstensberg]

Thx for your bug report @wood1986 , appreciate you putting in the time ❤️

[wood1986]

I have one more request. webpack-cli 3 has a private function

webpack-cli/bin/cli.js

Line 125 in f9f0860

function processOptions(options) {

to convert function-export-base to the real object. I want to reuse but it is not exposed. In webpack-cli 4, is it possible to expose that?

[evenstensberg]

I think that the edit needs to be done here:

https://github.com/webpack/webpack-cli/blob/next/lib/groups/config.js#L86-L88

[anikethsaha]

Not sure why this bug is happening but the tests seems fine and passing for config type function

https://github.com/webpack/webpack-cli/tree/next/test/config/type/function

[ematipico]

Is it fixed with latest beta?

[alexander-akait]

/cc @anshumanv fixed by #1721? Can you include it in the PR message?

[anshumanv]

Done @evilebottnawi 👍