remove hack in collapse_vars (#2457)

fixes #2456
2017-11-09 20:00:58 +08:00
parent 4c0b0177b6
commit 246d9d4e83
2 changed files with 33 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1062,7 +1062,7 @@ merge(Compressor.prototype, {
                var found = false;
                return statements[stat_index].transform(new TreeTransformer(function(node, descend, in_list) {
                    if (found) return node;
-                    if (node === expr) {
+                    if (node === expr || node.body === expr) {
                        found = true;
                        if (node instanceof AST_VarDef) {
                            drop_decl(node.name.definition());
@@ -1076,7 +1076,6 @@ merge(Compressor.prototype, {
                      case 0: return null;
                      case 1: return node.expressions[0];
                    }
-                    if (node instanceof AST_SimpleStatement && !node.body) return null;
                }));
            }