ERROR in ./~/bootstrap-sass/assets/fonts/bootstrap/glyphicons-halflings-regular.eot
Module parse failed: /mnt/4E6E45D36E45B48D/Work/webpack-demo/node_modules/bootstrap-sass/assets/fonts/bootstrap/glyphicons-halflings-regular.eot Unexpected character '�' (1:0)
You may need an appropriate loader to handle this file type.

原因：编译器尝试加载.eot font file,但是不知道怎么做，因为你没有适合loader

解决方法：

1、npm install file-loader url-loader -D

2、在webpack.config.js中添加下面的加载器

       test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'url?limit=10000&mimetype=application/font-woff'
        }, {
            test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'url?limit=10000&mimetype=application/octet-stream'
        }, {
            test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
            loader: 'file'
        }, {
            test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
            loader: "url?limit=10000&mimetype=image/svg+xml"
        }