fix corner case in unused

Author: alexlamsl

lib/ast.js

@@ -328,7 +328,7 @@ var AST_Toplevel = DEFNODE("Toplevel", "globals", {
         var body = this.body;
         var wrapped_tl = "(function(exports){'$ORIG';})(typeof " + name + "=='undefined'?(" + name + "={}):" + name + ");";
         wrapped_tl = parse(wrapped_tl);
-        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node) {
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function(node) {
             if (node instanceof AST_Directive && node.value == "$ORIG") {
                 return MAP.splice(body);
             }

lib/compress.js

@@ -15,9 +15,9 @@ holes_and_undefined: {
 
 constant_join: {
     options = {
-        unsafe   : true,
-        evaluate : true
-    };
+        evaluate: true,
+        unsafe: true,
+    }
     input: {
         var a = [ "foo", "bar", "baz" ].join("");
         var a1 = [ "foo", "bar", "baz" ].join();
@@ -64,9 +64,9 @@ constant_join: {
 
 constant_join_2: {
     options = {
-        unsafe   : true,
-        evaluate : true
-    };
+        evaluate: true,
+        unsafe: true,
+    }
     input: {
         var a = [ "foo", "bar", boo(), "baz", "x", "y" ].join("");
         var b = [ "foo", "bar", boo(), "baz", "x", "y" ].join("-");
@@ -93,9 +93,9 @@ constant_join_2: {
 
 constant_join_3: {
     options = {
-        unsafe: true,
         evaluate: true,
-    };
+        unsafe: true,
+    }
     input: {
         var a = [ null ].join();
         var b = [ , ].join();
@@ -133,7 +133,7 @@ for_loop: {
         reduce_vars: true,
         unsafe: true,
         unused: true,
-    };
+    }
     input: {
         function f0() {
             var a = [1, 2, 3];

test/compress/arrays.js

@@ -1,24 +1,24 @@
 asm_mixed: {
     options = {
-        sequences     : true,
-        properties    : true,
-        dead_code     : true,
-        drop_debugger : true,
-        conditionals  : true,
-        comparisons   : true,
-        evaluate      : true,
-        booleans      : true,
-        loops         : true,
-        unused        : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        keep_fnames   : false,
-        hoist_vars    : true,
-        if_return     : true,
-        join_vars     : true,
-        side_effects  : true,
-        negate_iife   : true
-    };
+        booleans: true,
+        comparisons: true,
+        conditionals: true,
+        dead_code: true,
+        drop_debugger: true,
+        evaluate: true,
+        hoist_funs: true,
+        hoist_vars: true,
+        if_return: true,
+        join_vars: true,
+        keep_fargs: true,
+        keep_fnames: false,
+        loops: true,
+        negate_iife: true,
+        properties: true,
+        sequences: true,
+        side_effects: true,
+        unused: true,
+    }
     input: {
         // adapted from http://asmjs.org/spec/latest/
         function asm_GeometricMean(stdlib, foreign, buffer) {