Fix sourcemap comments to be used on file transformers with CSS output

Author: IvanSanchez

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.11.4
+
+* In file transformers, use the destination filename extension to decide the sourcemap comment style. ([#116](https://github.com/gobblejs/gobble/issues/116))
+
 ## 0.11.3
 
 * Allow `.ext` option to work if `.accept` is a regex ([#97](https://github.com/gobblejs/gobble/issues/97))

package.json

@@ -1,7 +1,7 @@
 {
   "name": "gobble",
   "description": "The last build tool you'll ever need",
-  "version": "0.11.3",
+  "version": "0.11.4",
   "author": "Rich Harris",
   "license": "MIT",
   "repository": "https://github.com/gobblejs/gobble",

src/builtins/map.js

@@ -109,7 +109,7 @@ function processResult ( result, original, src, dest, codepath ) {
 		// if a sourcemap was returned, use it
 		if ( result.map ) {
 			return {
-				code: result.code.replace( SOURCEMAP_COMMENT, '' ) + getSourcemapComment( encodeURI( codepath + '.map' ), extname( codepath ) ),
+				code: result.code.replace( SOURCEMAP_COMMENT, '' ) + getSourcemapComment( encodeURI( codepath + '.map' ), extname( dest ) ),
 				map: processSourcemap( result.map, src, dest, original )
 			};
 		}