Gulp Task for Base64

base64.js

gulp.task('stylusURI', function() {
    gulp.src('./assets/b/blocks.uri.styl')
        .pipe(stylus()) // собираем stylus
        .pipe(cssBase64({
            baseDir: "../../assets/icons",
        }))
        .pipe(prefix())
        .pipe(gulp.dest('./public/css/')) // записываем css
        .pipe(reload({
            stream: true
        }));
});