Css – webpack’s sass-loader do not find foundation scss file without underline prefix

Recently, i was working on rapid frontend development toolchain with webpack, sass, bower and foundation5.

I encounter a problem:
sass-loader only load scss file with underline prefix.

Environments

node v0.12.4
webpack 1.9.11
node-sass 3.2.0
sass-loader 1.0.2
os gentoo 3.18

webpack.config.js

var webpack = require('webpack');
var path = require('path');

var getDir = function() {
  var args = Array.prototype.slice.call(arguments);
  return path.join.apply(path, [__dirname].concat(args));
};

module.exports = {
  // webpack options 
  context: getDir('./src'),

  entry: {
    test: "./style/test.scss"
  },

  output: {
    path: getDir('./build'),
    filename: "[name].js"
  },
  module: {
    loaders: [
    { test: /\.scss$/, loader: "style!css!sass?outputStyle=expanded&includePaths[]=" + getDir('bower_components', 'foundation', 'scss')}
    ]
  },

  progress: false, // Don't show progress 
  // Defaults to true 

  failOnError: true, // don't report error to grunt if webpack find errors 
  // Use this if webpack errors are tolerable and grunt should continue 

  watch: true, // use webpacks watcher 
  // You need to keep the grunt process alive 

  keepalive: false, // don't finish the grunt task 
  // Use this in combination with the watch option 

  devtool: 'eval'
};

test.scss

@import "settings";
@import "normalize";
@import "foundation/components/panels";
@import "foundation/components/type";

settings.scss

empty file

project layout

– bower_componets
– package.json
– src
— style
— test.scss
— settings.scss
– webpack.config.js

When i run webpack command, i got error:

ERROR in
../~/css-loader!../~/sass-loader?outputStyle=expanded&includePaths[]=/home/ray/test/testsassloader/bower_co
mponents/foundation/scss!./style/test.scss
Module build failed: @import "normalize";
^
File to import not found or unreadable: ./_normalize.scss
in /home/ray/test/testsassloader/src/style/test.scss (line 2, column 9) @ ./style/test.scss 4:14-220

Though, i copy bower_components/foundation/scss/normalize.scss to bower_components/foundation/scss/_normalize.scss, it works.

So i try to run by node-sass without _normalize.scss:

 ./node_modules/node-sass/bin/node-sass --include-path=$(pwd)/bower_components/foundation/scss/ src/style/test.scss

It works!!!

I conclude that it was the webpack resolver cause the problem!!
Any one could help me solve the problem? Did the copy do the right job?