underlyingSource is optional (mdn#1423)

teoli2003 · Jan 18, 2021 · feb5231 · feb5231
1 parent 12da1a0
commit feb5231
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/files/en-us/web/api/readablestream/readablestream/index.html b/files/en-us/web/api/readablestream/readablestream/index.html
@@ -20,7 +20,7 @@ <h2 id="Syntax">Syntax</h2>
 <h3 id="Parameters">Parameters</h3>
 
 <dl>
- <dt>underlyingSource</dt>
+ <dt>underlyingSource {{optional_inline}}</dt>
  <dd>An object containing methods and properties that define how the constructed stream
  instance will behave. <code>underlyingSource</code> can contain the following:
  <dl>