Webpack adds the nodejs shims when they actually not necessary.

[mightyaleksey]

Do you want to request a feature or report a bug?

I think it's a bug (not sure).

What is the current behavior?

Webpack includes in the resulting bundle nodejs shims for buffer, process and path modules when they are actually not necessary. It adds about 30kb in the minified bundle.
I faced this issue after updating version of webpack from 1.x to 2.x.

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

I made a small example, which illustrates the problem: https://github.com/sullenor/webpack-shims and attached the stats files:

• normal: https://rawgit.com/sullenor/webpack-shims/master/stats.html
• minified: https://rawgit.com/sullenor/webpack-shims/master/stats.min.html

What is the expected behavior?

Expected the resulting bundle to have a smaller size: ~3-5kb, not 33kb (minimized).

If this is a feature request, what is motivation or use case for changing the behavior?

No

Please mention other relevant information such as the browser version, Node.js version, webpack version and Operating System.

macOs Sierra 10.12.3, nodejs v7.7.2, webpack v2.2.1,
https://github.com/sullenor/webpack-shims/blob/master/package.json#L3-L6

From webpack/webpack#4473

[michael-ciniawsky]

@sullenor We need to investigate but not sure if we can fix it easily, as a workaround could you try

webpack.config.js

module.exports = {
...
node: {
  buffer: false
  ...
  }
}

I know it's inconvenient and shouldn't be a requirement to use style-loader or any other loader, but for the meantime 😛

[mightyaleksey]

@michael-ciniawsky looks like I came to the similar workaround :)

thank you!

[ablankenship10]

Think I am having a similar but slightly different issue. Without style-loader the webpack output:

Version: webpack 2.4.1
Time: 79ms
    Asset     Size  Chunks             Chunk Names
bundle.js  2.74 kB       0  [emitted]  main
   [0] ./src/main.js 0 bytes {0} [built]
   [1] ./index.js 26 bytes {0} [built]

Importing 1 empty stylesheet into my project causes this:

Version: webpack 2.4.1
Time: 372ms
    Asset     Size  Chunks             Chunk Names
bundle.js  73.5 kB       0  [emitted]  main
   [0] ./src/main.js 33 bytes {0} [built]
   [1] ./index.js 26 bytes {0} [built]
   [2] ./~/base64-js/index.js 3.48 kB {0} [built]
   [3] ./~/buffer/index.js 48.6 kB {0} [built]
   [4] ./~/css-loader!./src/style.css 199 bytes {0} [built]
   [5] ./~/css-loader/lib/css-base.js 2.19 kB {0} [built]
   [6] ./~/ieee754/index.js 2.05 kB {0} [built]
   [7] ./~/isarray/index.js 132 bytes {0} [built]
   [8] ./~/style-loader/addStyles.js 8.51 kB {0} [built]
   [9] ./~/style-loader/fixUrls.js 3.01 kB {0} [built]
  [10] ./src/style.css 899 bytes {0} [built]
  [11] (webpack)/buildin/global.js 509 bytes {0} [built]

My webpack config with the work around mentioned above:

module.exports = {
  entry: './index.js',
  output: {
    filename: 'bundle.js'
  },
  node: {
    buffer: false
  },
  module: {
    loaders: [
      {test: /\.html$/, loader: "html-loader"},
      {test: /\.less$/, loader: 'style-loader!css-loader!less-loader'},
      {test: /\.css$/, loader: 'style-loader!css-loader'},
    ]
  }
};

EDIT: It looks like the problem is actually with css-loader, not style-loader, and the work around should be Buffer with a capital B not lowercase.

Issue Ref from webpack-contrib/css-loader#454

[michael-ciniawsky]

Fixed in v0.18.0 https://github.com/webpack-contrib/style-loader/blob/master/lib/addStyles.js#L343