--clean-css option is not compatible with --source-map

[iki]

• clean-css does not currently support source maps, so the generated map is most probably incorrect: Source Maps clean-css/clean-css#125
• clean-css also strips (or does not insert) the /*# sourceMappingURL= comment.

Example: compare
lessc --compress --source-map style.less style.min.css
with
lessc --clean-css --source-map style.less style.min.css.

It would make sense to exit with an error when both options are specified by user on command line, or throw an error if called from js, e.g. from grunt-contrib-less.

[lukeapage]

okay, now will show an error if you use them.

[WraithKenny]

The error says "sourcemap" twice instead of mentioning "cleancss"

[lukeapage]

ah sorry, will correct

[lukeapage]

No. Clean css are working on sourcemap support though and once they are
finished we can make this a yes.

[pengyan518]

Really hope soucemap will work with "Clean css "!
Sass could do it,
i hope less could do so too!

[SpencerCarstens]

+1

[dotnetwise]

+1

[redfox05]

Still finding this an issue, using it through CodeKit Compress option, but wont compress and use sourcemaps at the same time. Says to check this issue.
"Note: the Less compiler currently can not write a source map when the 'Compressed' output style is selected. No source map was created. (See issue #1656 on the Less.js GitHub page.)"

Any plans for this to be addressed?

[lukeapage]

Clean css are adding support and we are working with them. They are in
beta, so probably not long..

[redfox05]

Excellent. Good to hear. And thanks for the quick reply.
On 20 Nov 2014 17:49, "Luke Page" [email protected] wrote:

Clean css are adding support and we are working with them. They are in
beta, so probably not long..

—
Reply to this email directly or view it on GitHub
#1656 (comment).

[lukeapage]

If people want to test the new clean-css sourcemaps in less, use less v2.1.1 (latest) and wherever you reference the clean-css plugin (whether in your package or just installed locally, use this..
git://github.com/less/less-plugin-clean-css.git#0be586d2b9ed8004f19078fbf293d96df0ab2dc0

e.g.

npm install -g git://github.com/less/less-plugin-clean-css.git#0be586d2b9ed8004f19078fbf293d96df0ab2dc0
npm install -g less
lessc in.less out.css --clean-css --source-map

[bdkjones]

So... any word on this? It's been months.

[seven-phases-max]

@bdkjones Read the post right above yours: update clean-css installed with less-plugin-clean-css to the latest version and you're there.

[bdkjones]

I read the entire thread, thanks. The post above mine implies that it's in beta. ("[...] if people want to test [...]") I'm looking for confirmation that this is ready for use in production.

[lukeapage]

Sorry, its no longer in beta, its out.

[redfox05]

If its out of beta then that's a good thing then? Does that mean it's fixed?
On 20 Mar 2015 06:33, "Luke Page" [email protected] wrote:

Sorry, its no longer in beta, its out.

—
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#1656 (comment).

[lukeapage]

It is fixed. The sorry was for not updating the issue.