collapse within unary expressions (#2910)

2018-02-13 07:10:37 +08:00
parent 0c4f315c02
commit d8e0e34354
2 changed files with 4 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1260,6 +1260,8 @@ merge(Compressor.prototype, {
                } else if (expr instanceof AST_Unary) {
                    if (expr.operator == "++" || expr.operator == "--") {
                        candidates.push(hit_stack.slice());
+                    } else {
+                        extract_candidates(expr.expression);
                    }
                } else if (expr instanceof AST_VarDef) {
                    if (expr.value) {
@@ -1314,6 +1316,7 @@ merge(Compressor.prototype, {
                    return find_stop(parent, level + 1, true);
                }
                if (parent instanceof AST_Switch) return node;
+                if (parent instanceof AST_Unary) return node;
                if (parent instanceof AST_VarDef) return node;
                return null;
            }