Can't find options with ident 'ref--*-*' when Rule.use is a function

[melan0802]

Bug report

What is the current behavior?

When Rule.use is a function that return UseEntry With Options, the compilation failed with error "Can't find options with ident 'ref--4-1'"

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

webpack.config.js

const path = require('path')
module.exports = {
  mode: 'production',
  entry: './index.js',
  output: {
    path: path.resolve(__dirname, './dist')
  },
  module: {
    rules: [
      {
        test: /\.css/,
        use (info) {
          return [
            'style-loader',
            {
              loader: 'css-loader',
              options: {
                url: true
              }
            }
          ]
        }
      }
    ]
  }
}

What is the expected behavior?

behavior like it is a UseEntry Array

Other relevant information:
webpack version: 4.29.6
Node.js version: 10.15.3
Operating System: Windows 10

Check out the source and pretty sure it's a bug in RuleSet.js , the options references as RuleSet.references is assigned only when rule.use is an array. Should I make an PR?

[alexander-akait]

Why do you use function? Feel free to send a PR

[melan0802]

@evilebottnawi Above webpack.config.js is just as an example. In my project I want to add a loader when issuer match a specific file, maybe function isn't designed for this? But bug is still there as long as using function.

[7iomka]

it is not fixed in latest ver (4.x)?! how to use that in v4?

[BlueSky1997AL]

Is there any progress about this issue? Still not functional in latest version (4.39.2).

[aKzenT]

If I understand the PR correctly, it was merged to the next (v5) branch. Any chance to get this backported for the next minor 4.x release? I also need to define Rule.use as a function and getting this problem.

[alexander-akait]

/cc @sokra it is solved for webpack@5?

[jedmonsanto]

No need for it to be function. Please see below:

[steventhan]

@jedmonsanto not relevant to the question I'm afraid

[ja0n]

Still not functional in the latest version (4.41.2)

[alexander-akait]

You can use ident: 'name-of-ident' to avoid that problem

[underflow00]

You can use ident: 'name-of-ident' to avoid that problem

Tried this. Issue still persists. Is there a workaround to this?

[alexander-akait]

@underflow00 can you create reproducible test repo?

[underflow00]

@underflow00 can you create reproducible test repo?

Isn't the first post already it? I just added ident: '...' into the options and that didn't do anything.

[CressZZ]

...cant't we Rule.use function with options until releasing 5.x version ?

[alexander-akait]

@underflow00 @CressZZ please create reproducible test repo

[webpack-bot]

This issue had no activity for at least three months.

It's subject to automatic issue closing if there is no activity in the next 15 days.

[alexander-akait]

bump

[sokra]

Webpack 5 has a better error message for this case. It also fixes some problems here. Anyway you need an ident When using a function. ident should be next to options not inside of the options. { loader, options, ident }

[alexander-akait]

@sokra so we throw an error when ident doesn't exists?

[sokra]

Yes. We also have better names for the automatic indents in webpack 5.

[alexander-akait]

If somebody faced with the issue again, please open a new issue with reproducible test repo, thanks