rework postcss gulp task

styles.js

//Rework Plugins

var plugins = {
    calc:require("rework-calc"),
    colorFunction: require("rework-color-function"),
    customMedia:require("rework-custom-media"),
    fontVariant:require("rework-font-variant"),
    hexAlpha:require("rework-hex-alpha"),
    import: require("rework-import"),
    inherit:require("rework-inherit"),
    //at2x:require("rework-plugin-at2x"),
    colors:require("rework-plugin-colors"),
    ease:require("rework-plugin-ease"),
    function:require("rework-plugin-function"),
    inline:require("rework-plugin-inline"),
    mixin:require("rework-plugin-mixin"),
    references:require("rework-plugin-references"),
    vars:require("rework-vars")
};

gulp.task('styles:rework', function(){
    return gulp.src("app/modules/**/*.css")
        //.pipe($.plumber())
        .pipe($.rework(
            plugins.calc,
            plugins.colorFunction,
            //plugins.customMedia(mediaOptions),
            plugins.fontVariant,
            plugins.hexAlpha,
            plugins.import({path:[
                //'app/css',
                'app/modules/**/*.css']}),
            plugins.inherit(),
            //plugins.at2x(),
            plugins.colors(),
            plugins.ease(),
            //plugins.function(styleFunctions),
            plugins.inline('images/', 'fonts/'),
            //plugins.mixin(),
            plugins.references(),
            //plugins.vars({
            //    map: varsMap,
            //    preserve: true
            //
            //}),
            { sourcemap: true }
        ))
        //.pipe($.autoprefixer({browsers: ['last 1 version']}))
        .pipe(gulp.dest('.tmp/modules'))
        // Concatenate And Minify Styles
        //.pipe($.csso())
        //.pipe(gulp.dest('dist'))
        .pipe($.size({title: 'styles'}));
});