Give up evaluating (unary-prefix '-' 0)

Close #117 ------ JS, WHY YOU SUCK SO BADLY? ;-(
mishoo · Feb 6, 2013 · f36e4e9 · f36e4e9 · rvanvelzen · Feb 6, 2013
1 parent fdf8b5e
commit f36e4e9
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/compress.js b/lib/compress.js
@@ -628,7 +628,10 @@ merge(Compressor.prototype, {
               case "typeof": return typeof ev(e);
               case "void": return void ev(e);
               case "~": return ~ev(e);
-              case "-": return -ev(e);
+              case "-":
+                e = ev(e);
+                if (e === 0) throw def;
+                return -e;
               case "+": return +ev(e);
             }
             throw def;