Fix #13983. Switch to //# for sourcemap directives.

Gruntfile.js

@@ -85,12 +85,10 @@ module.exports = function( grunt ) {
 					"dist/jquery.pre-min.js": [ "dist/jquery.js" ]
 				},
 				options: {
-					banner: "\n\n\n\n\n\n\n\n\n\n" + // banner line size must be preserved
+					banner: "\n\n\n\n\n\n\n\n\n\n\n\n" + // banner line size must be preserved
 						"/*! jQuery v<%= pkg.version %> | " +
 						"(c) 2005, 2013 jQuery Foundation, Inc. | " +
-						"jquery.org/license\n" +
-						"//@ sourceMappingURL=jquery.min.map\n" +
-						"*/\n"
+						"jquery.org/license */\n"
 				}
 			}
 		},

build/tasks/dist.js

@@ -57,18 +57,6 @@ module.exports = function( grunt ) {
 			if ( /\.map$/.test( filename ) ) {
 				text = text.replace( /"dist\//g, "\"" );
 				fs.writeFileSync( filename, text, "utf-8" );
-
-			// Use our hard-coded sourceMap directive instead of the autogenerated one (#13274; #13776)
-			} else if ( /\.min\.js$/.test( filename ) ) {
-				i = 0;
-				text = text.replace( /(?:\/\*|)\n?\/\/@\s*sourceMappingURL=.*(\n\*\/|)/g,
-					function( match ) {
-						if ( i++ ) {
-							return "";
-						}
-						return match;
-					});
-				fs.writeFileSync( filename, text, "utf-8" );
 			}
 
 			// Optionally copy dist files to other locations

build/tasks/uglify.js

@@ -38,12 +38,8 @@ module.exports = function( grunt ) {
 			// Rename the file to a temporary name.
 			fs.renameSync( mapFileName, mapping.dest);
 			grunt.file.write( mapFileName, grunt.file.read( mapping.dest )
-				// The uglify task erroneously prepends dist/ to file names.
-				.replace( /"dist\//g, "\"" )
 				// Refer to the source jquery.js, not the temporary jquery.pre-min.js.
-				.replace( /\.pre-min\./g, "." )
-				// There's already a pragma at the beginning of the file, remove the one at the end.
-				.replace( /\/\/@ sourceMappingURL=jquery\.min\.map$/g, "" ));
+				.replace( /\.pre-min\./g, "." ));
 		});
 
 		// Remove temporary files.