Question

以下是我的node.js文件的摘录我正在尝试将代码从LESS编译成CSS。我错过了什么

app.use(lessMiddleware({
    src: path.join(__dirname, '/public/stylesheets/styles', 'less'), 
    dest: path.join(__dirname, '/public/stylesheets/css'),
    prefix : '/stylesheets',
}));

当我刷新index.html时，它会将我抛出错误

TypeError: Arguments to path.join must be strings
    at f (path.js:204:15)
    at Object.filter (native)
    at Object.exports.join (path.js:209:40)
    at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\less-middleware\lib\mi
ddleware.js:161:27
    at Layer.handle [as handle_request] (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\n
ode_modules\express\lib\router\layer.js:95:5)
    at trim_prefix (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\router\index.js:312:13)
    at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\router\ind
ex.js:280:7
    at Function.process_params (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modul
es\express\lib\router\index.js:330:12)
    at next (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\rout
er\index.js:271:10)
    at expressInit (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\middleware\init.js:33:5)
TypeError: Arguments to path.join must be strings
    at f (path.js:204:15)
    at Object.filter (native)
    at Object.exports.join (path.js:209:40)
    at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\less-middleware\lib\mi
ddleware.js:161:27
    at Layer.handle [as handle_request] (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\n
ode_modules\express\lib\router\layer.js:95:5)
    at trim_prefix (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\router\index.js:312:13)
    at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\router\ind
ex.js:280:7
    at Function.process_params (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modul
es\express\lib\router\index.js:330:12)
    at next (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\rout
er\index.js:271:10)
    at expressInit (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\middleware\init.js:33:5)

请提供变通方法或任何其他中间件。

Answer 1

less-middleware function的界面与您在代码段中显示的界面不同。

看起来像lessMiddleware(source, options)，其中source是字符串，options是对象。当它试图在path.join上调用source时，它会在here附近出现中断，在您的情况下是一个对象。

您可以在documentation of the middleware中查看选项中已接受的参数。

没有编译的LESS文件

1 个答案: