使用NodeJS创建scss文件

Question

我想使用NodeJS和“fs.writeFile”生成.scss文件，但它不起作用，我不知道最好的方法是什么。

我的js代码（路径='/ sass/bottom/_settings.scss'）：

BottomGenerator.prototype.createSettings = function(path, color, columnWidth){

    var _settings = "
        @import \"compass/css3\";
        @import \"compass/typography\";
        @import \"compass/css3/transition\";
        @import \"compass/css3/transform\";
        @import \"compass/css3/text-shadow\";
        @import \"compass/css3/box-shadow\";
        @import \"compass/css3/user-interface\";
        @import url(http://fonts.googleapis.com/css?family=Open+Sans:400,600);
        $total-columns      : 12;
        $column-width       : "+columnWidth+"px;
        $gutter-width       : 10px;
        $container-width    : ( $total-columns * $column-width) + ( $total-columns * $gutter-width ) - 10;
        $color              : "+color+";
        $gray               : lighten(#000000, 10%);
    ";

    fs.writeFile(path, _settings, function (err) {
        if (err) throw err;
    });

}

编辑1（发现问题）：

    var str = fs.readFileSync(lib+'/_settings.ejs', 'utf8');

BottomGenerator.prototype.createSettings = function(path, color, columnWidth){

    var _settings = ejs.render(str, {
        color: color,
        columnWidth: columnWidth
    });

    fs.writeFile(path, _settings, function (err) {
        if (err) throw err;
    });

}

和一个ejs文件（_settings.ejs）：

    @import "compass/css3";
    @import "compass/typography";
    @import "compass/css3/transition";
    @import "compass/css3/transform";
    @import "compass/css3/text-shadow";
    @import "compass/css3/box-shadow";
    @import "compass/css3/user-interface";
    @import url(http://fonts.googleapis.com/css?family=Open+Sans:400,600);

    $total-columns      : 12;
    $column-width       : <%= columnWidth %>px;
    $gutter-width       : 10px;
    $container-width    : ( $total-columns * $column-width) + ( $total-columns * $gutter-width ) - 10;
    $color              : <%= color %>;
    $gray               : lighten(#000000, 10%);