fix reduce_vars on AST_Switch (#1671)

Take conditional nature of switch branches into account. fixes #1670
2017-03-25 21:17:30 +08:00
parent 6e86ee950d
commit 0a65de89b9
2 changed files with 181 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -341,7 +341,7 @@ merge(Compressor.prototype, {
                    pop();
                    return true;
                }
-                if (node instanceof AST_Catch) {
+                if (node instanceof AST_Catch || node instanceof AST_SwitchBranch) {
                    push();
                    descend();
                    pop();