moved typeof foo == "undefined" ==> foo === undefined under --unsafe

because 43fd45154b (commitcomment-1864505)
2012-09-17 18:49:52 +03:00
parent e370e3b5a4
commit ee669ba878
1 changed files with 17 additions and 15 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1371,6 +1371,7 @@ function Compressor(options, false_by_default) {
            // XXX: intentionally falling down to the next case
          case "==":
          case "!=":
+            if (compressor.option("unsafe")) {
                if (this.left instanceof AST_UnaryPrefix
                    && this.left.operator == "typeof"
                    && this.right instanceof AST_String
@@ -1387,6 +1388,7 @@ function Compressor(options, false_by_default) {
                    this.right = make_node(AST_Undefined, this.left).optimize(compressor);
                    if (this.operator.length == 2) this.operator += "=";
                }
+            }
            break;
        }
        if (compressor.option("booleans") && compressor.in_boolean_context()) switch (this.operator) {