fix: Cannot cancel timeout

README.md

@@ -74,6 +74,12 @@ npm i core-async
 
 # APIs
 ## Channel
+
+The Channel object supports three different signatures:
+- `new Channel(<Int> buffer, <Object> options)`
+- `new Channel(<Int> buffer, <Func> transducer, <Object> options)`
+- `new Channel(<Func> transducer, <Object> options)`
+
 ### Buffered vs Unbuffered Channels
 
 ```js

src/tools.js

@@ -40,7 +40,7 @@ const timeout = time => {
 	} 
 
 	const d = delay(t)
-	const out = new Channel(null, null, { onClosing:d.cancel })
+	const out = new Channel(null, { onClosing:d.cancel })
 	d.then(() => out.put('timeout'))
 	return out
 }