enhance unsafe for Array (#3349)

2019-03-20 06:37:51 +08:00
parent b9615f7a62
commit f2286c33f1
3 changed files with 158 additions and 9 deletions
--- a/test/compress/reduce_vars.js
+++ b/test/compress/reduce_vars.js
@@ -6716,3 +6716,24 @@ issue_3297: {
    }
    expect_stdout: "true"
 }
+
+drop_side_effect_free: {
+    options = {
+        collapse_vars: true,
+        evaluate: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        var a = 123;
+        "" + (a && (a.b = 0) || a);
+        console.log(a);
+    }
+    expect: {
+        var a = 123;
+        a.b = 0;
+        console.log(a);
+    }
+    expect_stdout: "123"
+}