Type Error

[Deeech]

Hello! I writing tool for minificators testing. It downloads several web sites, compresses them and does a screenshots to make sure that nothing been broken. And I get errors in all files.

minified = moreCss.compress(source, true);

`TypeError: Path must be a string. Received undefined

at assertPath (path.js:7:11)

at Object.dirname (path.js:1326:5)

at new CleanCSS (/home/deeech/Projects/git/css-minificator-tests/node_modules/more-css/node_modules/clean-css/lib/clean.js:55:130)

at Compress.compress (/home/deeech/Projects/git/css-minificator-tests/node_modules/more-css/build/compress.js:34:18)

at exports.default (/home/deeech/Projects/git/css-minificator-tests/node_modules/more-css/build/compress.js:11:49)

at Function.More.compress (/home/deeech/Projects/git/css-minificator-tests/node_modules/more-css/build/More.js:430:12)

at Object.more-css (/home/deeech/Projects/git/css-minificator-tests/lib/minifiers.js:67:30)

at Object.exports.minify.err [as minify] (/home/deeech/Projects/git/css-minificator-tests/lib/minifiers.js:86:35)

at promise.then (/home/deeech/Projects/git/css-minificator-tests/lib/processPage.js:48:24)

at _fulfilled (/home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:834:54)

at self.promiseDispatch.done (/home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:863:30)

at Promise.promise.promiseDispatch (/home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:796:13)

at /home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:604:44

at runSingle (/home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:137:13)

at flush (/home/deeech/Projects/git/css-minificator-tests/node_modules/q/q.js:125:13)

at _combinedTickCallback (internal/process/next_tick.js:67:7)

at process._tickCallback (internal/process/next_tick.js:98:9)`

Is this minificator error or I just don't use it correctly?

[army8735]

which version of clean-css is to be used?
I haven't been updated for a long time, it seems the interface of clean-css has been changed.
It's a pity I suggest to use clean-css directly.