Pass customInterpolateName from query

[Chaptykov]

It is based on top of #315 by @helloyou2012.

This PR allows to pass customInterpolateName function from webpack config to loaderUtils.interpolateName. It allows to generate classnames manually. It will solve #292.

Webpack config:

let i = 0;

module.exports = {
  module: {
    loaders: [{
      test: /\.css$/,
      loader: 'style!css?modules&importLoaders=1&localIdentName=[name]__[local]'
    }]
  },
  cssLoader: {
    customInterpolateName: function() {
      i++;
      return '_' + i;
    }
  }
};

For this file structure:

first.css
  .title {}
  .text {}
second.css
  .title {}

returns

._1 {} /* first.css  → .title */
._2 {} /* first.css  → .text  */
._3 {} /* second.css → .title */

[codecov-io]

Current coverage is 98.39% (diff: 100%)

Merging #327 into master will increase coverage by 0.04%

@@             master       #327   diff @@
==========================================
  Files             9          9          
  Lines           303        312     +9   
  Methods          41         41          
  Messages          0          0          
  Branches         66         70     +4   
==========================================
+ Hits            298        307     +9   
  Misses            5          5          
  Partials          0          0          

Powered by Codecov. Last update 22f6621...015ceb5

[ArtZanko]

+1

[MrCheater]

+1

[sokra]

see #348 and #357