Test environment

Makefile

@@ -46,11 +46,11 @@ v86_all.js: src/*.js src/browser/*.js src/cpu.js
 	java -jar $(CLOSURE) \
 		--js_output_file "../v86_all.js"\
 		--define=DEBUG=false\
-		$(CLOSURE_SOURCE_MAP) v86_all.js.map\
-		$(CLOSURE_FLAGS)\
 		--define=IN_NODE=false\
 		--define=IN_BROWSER=true\
 		--define=IN_WORKER=false\
+		$(CLOSURE_SOURCE_MAP) v86_all.js.map\
+		$(CLOSURE_FLAGS)\
 		--js $(CORE_FILES)\
 		--js $(BROWSER_FILES)
 

src/main.js

@@ -1,5 +1,19 @@
 "use strict";
 
+/** @define {boolean} */
+var 
+    IN_NODE = false,
+    /** @define {boolean} */
+    IN_WORKER = false,
+    /** @define {boolean} */
+    IN_BROWSER = false;
+
+
+if(IN_BROWSER + IN_NODE + IN_WORKER !== 1)
+{
+    throw "Invalid environment";
+}
+
 Object.fromList = function(xs)
 {
     var result = {};