From 60a475df7359f8cbb9415a677fd1e613df08408f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Tue, 3 Nov 2020 09:05:09 +0100
Subject: [PATCH] js: Add avoidTDZ option

Fixes #7865
---
 content/en/hugo-pipes/js.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/content/en/hugo-pipes/js.md b/content/en/hugo-pipes/js.md
index 5e9c027d5..07ee560f6 100644
--- a/content/en/hugo-pipes/js.md
+++ b/content/en/hugo-pipes/js.md
@@ -40,6 +40,9 @@ Note that this is meant for small data sets, e.g. config settings. For larger da
 minify [bool]
 : Let `js.Build` handle the minification.
 
+avoidTDZ {{< new-in "0.78.0" >}}
+: There is/was a bug in WebKit with severe performance issue with the tracking of TDZ checks in JavaScriptCore. Enabling this flag removes the TDZ and `const` assignment checks and may improve performance of larger JS codebases until the WebKit fix is in widespread use. See https://bugs.webkit.org/show_bug.cgi?id=199866
+
 target [string]
 : The language target.
   One of: `es5`, `es2015`, `es2016`, `es2017`, `es2018`, `es2019`, `es2020` or `esnext`.