improve Dictionary performance (#5202)

- workaround `__proto__` quirks on v8
2021-12-05 06:58:52 +00:00
parent 860aa9531b
commit b0799105c2
8 changed files with 255 additions and 221 deletions
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -3203,7 +3203,7 @@ issue_4552: {
    expect_stdout: "NaN"
 }

-issue_4886: {
+issue_4886_1: {
    options = {
        evaluate: true,
        unsafe: true,
@@ -3222,3 +3222,23 @@ issue_4886: {
    }
    expect_stdout: "true"
 }
+
+issue_4886_2: {
+    options = {
+        evaluate: true,
+        unsafe: true,
+    }
+    input: {
+        console.log("foo" in {
+            "foo": null,
+            __proto__: 42,
+        });
+    }
+    expect: {
+        console.log("foo" in {
+            "foo": null,
+            __proto__: 42,
+        });
+    }
+    expect_stdout: "true"
+}