Bootstrap 3.1.1 - What is the .map extension file used for?

Question

I need to upgrade an application I'm working on with the latest Bootstrap version but I'm struggling to figure out what an addition of bootstrap.css.map is for?

Do I need to have them to have the css work properly?

I did some search before writing this but since it's relatively new, I haven't come across any tangible explanations to this.

possible duplicate of [what are the .map files used for in Bootstrap 3.1?](http://stackoverflow.com/questions/21504611/what-are-the-map-files-used-for-in-bootstrap-3-1) — XML, Mar 27 '14 at 13:08

score 29 · Accepted Answer · answered Feb 13 '14 at 23:43

29

It is source map for Firefox and Chrome debuggers.

http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/

Because the source code is minified/bundled the line numbers do not refer to the orignal files. Source map protocol fixes this, allowing the web debuggers to refer to the original context from where the CSS was generated.

answered Feb 13 '14 at 23:43

Mikko Ohtamaa

82,057
50
264
435

It was actually coming as a 404 error (which is really bugging me) so would it be O.K. if I just removed that line? – nahtnam Feb 14 '14 at 05:37
4

It is ok to remove it unless you are developing Bootstrap itself. – Mikko Ohtamaa Feb 14 '14 at 12:29
1

Also see: [tag:source-maps] – James A Mohler Feb 15 '14 at 20:31
2

from bootstrap.css remove last line or modify accordingly `/*# sourceMappingURL=bootstrap-css.map */` – Premchandra Singh Nov 05 '14 at 12:39

score 2 · Answer 2 · answered Dec 24 '14 at 14:34

2

you can download it and then place it at the same directory of bootstrap.css file

https://github.com/twbs/bootstrap/blob/master/dist/css/bootstrap.css.map

answered Dec 24 '14 at 14:34

Ahmad Sharif

4,141
5
37
49

Bootstrap 3.1.1 - What is the .map extension file used for?

2 Answers2

Linked