From 7516fbce3ee15b398018da9c9093b42d27d0e32f Mon Sep 17 00:00:00 2001
From: Kostas Chatzikokolakis <kostas@chatzi.org>
Date: Thu, 22 Feb 2018 19:26:09 +0100
Subject: [PATCH] Closure: prefix paths by file://, create sourceMappingURL

---
 lime/tools/helpers/HTML5Helper.hx | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/lime/tools/helpers/HTML5Helper.hx b/lime/tools/helpers/HTML5Helper.hx
index d57c34d95..69970af2a 100644
--- a/lime/tools/helpers/HTML5Helper.hx
+++ b/lime/tools/helpers/HTML5Helper.hx
@@ -193,16 +193,14 @@ class HTML5Helper {
 				
 				if (FileSystem.exists (sourceFile + ".map") || project.targetFlags.exists ("source-map")) {
 					
+					// if an input .js.map exists closure automatically detects it (from sourceMappingURL)
+					// --source_map_location_mapping adds file:// to paths (similarly to haxe's .js.map)
+					
 					args.push ("--create_source_map");
 					args.push (tempFile + ".map");
+					args.push ("--source_map_location_mapping");
+					args.push ("/|file:///");
 					
-					if (FileSystem.exists (sourceFile + ".map")) {
-						
-						args.push ("--source_map_input");
-						args.push (sourceFile + "|" + sourceFile + ".map");
-						
-					}
-				
 				}
 				
 				if (!LogHelper.verbose) {
@@ -215,6 +213,11 @@ class HTML5Helper {
 				
 				if (FileSystem.exists (tempFile + ".map")) {
 					
+					// closure does not include a sourceMappingURL in the created .js, we do it here
+					var f = File.append (tempFile);
+					f.writeString ("//# sourceMappingURL=" + Path.withoutDirectory (sourceFile) + ".map");
+					f.close ();
+					
 					File.copy (tempFile + ".map", sourceFile + ".map");
 					FileSystem.deleteFile (tempFile + ".map");