Webpack 2+: How to apply different loaders for files with same extension?

Question

Here\'s my use-case: Most svgs should be inlined. So I setup a rule like this:

{test: /\\.svg$/, use: \"svg-inline-loader\"},

In some insta

Answer 1

In addition to test, you can specify include/exclude conditions. From the docs on configuration options:

{
    test: /\.jsx?$/,
    include: [
      path.resolve(__dirname, "app")
    ],
    exclude: [
      path.resolve(__dirname, "app/demo-files")
    ]
    // these are matching conditions, each accepting a regular expression or string
    // test and include have the same behavior, both must be matched
    // exclude must not be matched (takes preferrence over test and include)
    // Best practices:
    // - Use RegExp only in test and for filename matching
    // - Use arrays of absolute paths in include and exclude
    // - Try to avoid exclude and prefer include
}

Answer 2

So I recently attended a talk by webpack's Juho Vepsäläinen and found the answer in this slide:

{
  test: /.css$/,

  oneOf: [
    {
      resourceQuery: /inline/, // foo.css?inline
      use: 'url-loader',
    },
    {
      resourceQuery: /external/, // foo.css?external
      use: 'file-loader',
    },
  ],
}

resourceQuery to the rescue!

Answer 3

resolveLoader.alias will be solution for you.

Your config will look like this:

resolveLoader: {
  alias: {
    myLoader1: "svg-inline-loader", // and much more
    myLoader2: "file-loader!image-webpack-loader" // and much more
  }
}

and usage:

require('myLoader1!path/to/file1.svg');
require('myLoader2!path/to/file2.svg');

---

Or if you want for example myLoader1 config to be default and from time to time use myLoader2 loaders use this kind of config:

{
  test: /\.svg$/,
  use: "svg-inline-loader" // and much more
}

// ...

resolveLoader: {
  alias: {
    myLoader: "file-loader!image-webpack-loader" // and much more
  }
}

and use like this:

require('path/to/file1.svg'); // default svg-inline-loader
require('!myLoader!path/to/file2.svg'); // specific file-loader!image-webpack-loader
// ! at the beginning - disables loaders from default
// and myLoader enables file-loader and image-webpack-loader

PS. I had similar question here it's for webpack 1 but documentation says that resolveLoader.alias works the same.