Release: remove sourcemap comment from all copies of minified file

Fixes gh-1707

2 files changed, 13 insertions, 6 deletions

diff --git a/build/release/cdn.js b/build/release/cdn.js
index 8b0658812..6c497ee0b 100644
--- a/build/release/cdn.js
+++ b/build/release/cdn.js
@@ -44,12 +44,6 @@ function makeReleaseCopies( Release ) {
 					"\"file\":\"" + unpathedFile.replace( /\.min\.map/, ".min.js" ) +
 					"\",\"sources\":[\"" + unpathedFile.replace( /\.min\.map/, ".js" ) + "\"]" );
 			fs.writeFileSync( releaseFile, text );
-		} else if ( /\.min\.js$/.test( releaseFile ) ) {
-			// Remove the source map comment; it causes way too many problems.
-			// Keep the map file in case DevTools allow manual association.
-			text = fs.readFileSync( builtFile, "utf8" )
-				.replace( /\/\/# sourceMappingURL=\S+/, "" );
-			fs.writeFileSync( releaseFile, text );
 		} else if ( builtFile !== releaseFile ) {
 			shell.cp( "-f", builtFile, releaseFile );
 		}
diff --git a/build/tasks/sourcemap.js b/build/tasks/sourcemap.js
new file mode 100644
index 000000000..5f4d5232f
--- /dev/null
+++ b/build/tasks/sourcemap.js
@@ -0,0 +1,13 @@
+var fs = require( "fs" );
+
+module.exports = function( grunt ) {
+	var minLoc = Object.keys( grunt.config( "uglify.all.files" ) )[ 0 ];
+	grunt.registerTask( "remove_map_comment", function() {
+		// Remove the source map comment; it causes way too many problems.
+		// The map file is still generated for manual associations
+		// https://github.com/jquery/jquery/issues/1707
+		var text = fs.readFileSync( minLoc, "utf8" )
+			.replace( /\/\/# sourceMappingURL=\S+/, "" );
+		fs.writeFileSync( minLoc, text );
+	});
+};