From 2c9c72e06c674ae313001d0b5878fe2ccfc31492 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sat, 19 Dec 2020 18:31:09 +0000
Subject: suppress false positives in `ufuzz` (#4419)

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'README.md')

diff --git a/README.md b/README.md
index 4753b4c2..c23116bd 100644
--- a/README.md
+++ b/README.md
@@ -1217,3 +1217,13 @@ To allow for better optimizations, the compiler makes various assumptions:
   // SyntaxError: Identifier 'a' has already been declared
   ```
   UglifyJS may modify the input which in turn may suppress those errors.
+- Later versions of JavaScript will throw `SyntaxError` with the following:
+  ```js
+  try {
+    // ...
+  } catch ({ message: a }) {
+    var a;
+  }
+  // SyntaxError: Identifier 'a' has already been declared
+  ```
+  UglifyJS may modify the input which in turn may suppress those errors.
-- 
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