Sourcemaps with multiple src files:

[phadej]

The example is a code at https://github.com/phadej/relaxed-json/tree/c3667434eb211b0f745872793723dcffe6e304d4

When running grunt less output is:

Running "less:web" (less) task
File web.min.css.map created.
File web.min.css.map created.
File web.min.css created.
Original: 7798 bytes.
Minified: 5564 bytes.

Looks like less itself doesn't support multiple input files for the source maps, but I guess it good to have this feature bug at least documented.

[rapidrapids]

+1

[lukeapage]

If you don't specify the sourcemap output filename, does grunt-contrib-less default to the input filename + ".map" ? if it did then it would get output as two different files?

[kellygrape]

+1

@lukeapage - if no sourcemap filename is specified, the sourcemap is not generated.

[umaar]

+1, for large projects, this would be useful!

[zamber]

The source map is generated and appended to the .css file if you don't specify a filename.

Just tested this. The linked repo is not using grunt-contrib-less but uglify.

IMO a more prominent issue is that having a index.less containing @import's defeats the pros of source maps :(.

[cpixl]

+1

[tkellen]

PRs welcome everyone--I can say with pretty much 100% certainty that I won't be implementing this any time soon.

[phadej]

@zamber, the linked commit uses uglify for javascript, but grunt-contrib-less for generating css. Also with grunt I could have input files specified with a glob pattern, can't do that with index.less approach. Of course I could generate index.less from template, but that starts to be unnecessarily complicated.

@tkellen would it be enough for now to fail the task if there is sourceMapFilename option and more then one input?

[tkellen]

Sure, that seems reasonable to me.

[blittle]

WIsh I had time to try a PR here :) This pretty much makes LESS sourcemaps useless on larger projects.

[jamesplease]

So, wait, if I'm understanding correctly this is an issue with less and not this task?

[leolanese]

Yep, you are right.