underlyingSync is optional (#1424)

mdn · Jan 18, 2021 · 44b8aa8 · 44b8aa8
1 parent feb5231
commit 44b8aa8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/files/en-us/web/api/writablestream/writablestream/index.html b/files/en-us/web/api/writablestream/writablestream/index.html
@@ -22,7 +22,7 @@ <h2 id="Syntax">Syntax</h2>
 <h3 id="Parameters">Parameters</h3>
 
 <dl>
- <dt>underlyingSink</dt>
+ <dt>underlyingSink {{optional_inline}}</dt>
  <dd>An object containing methods and properties that define how the constructed stream
  instance will behave. <code>underlyingSink</code> can contain the following:
  <dl>