special/webpack: babel-loader presets are not detected

[sveyret]

Bug Description

When a babel preset is used in webpack configuration file, it is not detected as a dependency.

Code snippets

Where the dependency is used:

module.export = {
    module: {
      rules: [
        {
          test: /\.js$/, use: {
            loader: 'babel-loader',
            options: { presets: [
              ['@babel/preset1', { option: 'option' }],
              '@babel/preset2'
            ]},
          }
        },
      ],
    },
}

Where the dependency is listed in package.json:

"devDependencies": {
  "@babel/preset1": "7.6.3",
  "@babel/preset2": "7.6.3",
}

Versions

• node -v: v8.12.0
• npm -v: 6.4.1
• depcheck --version: 0.8.4

Extra info

Currently creating a PR for that.

[rumpl]

Closed with #449