fix corner case in evaluate (#3729)

2020-02-19 00:41:10 +00:00
parent 7052ce5aef
commit 6092bf23de
5 changed files with 59 additions and 7 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3416,6 +3416,8 @@ merge(Compressor.prototype, {
                        line: this.start.line,
                        col: this.start.col
                    });
+                } finally {
+                    if (val instanceof RegExp) val.lastIndex = 0;
                }
            }
            return this;
@@ -6866,7 +6868,7 @@ merge(Compressor.prototype, {
            if (node.truthy) return true;
            if (node.falsy) return false;
            if (node.is_truthy()) return true;
-            return node.evaluate(compressor);
+            return node.evaluate(compressor, true);
        }

        function is_indexFn(node) {