support for [await]...of statements (#4627)

2021-02-08 20:28:23 +00:00
parent aedc1e7fc9
commit e13d1e9969
11 changed files with 203 additions and 64 deletions
--- a/README.md
+++ b/README.md
@@ -1272,3 +1272,12 @@ To allow for better optimizations, the compiler makes various assumptions:
  // SyntaxError: Invalid Unicode escape sequence
  ```
  UglifyJS may modify the input which in turn may suppress those errors.
+- Some versions of JavaScript will throw `SyntaxError` with the
+  following:
+  ```javascript
+  try {} catch (e) {
+      for (var e of []);
+  }
+  // SyntaxError: Identifier 'e' has already been declared
+  ```
+  UglifyJS may modify the input which in turn may suppress those errors.