doc: add a note about possible missing lines to readline.asyncIterator

mikhalev-im · mikhalev-im · commit 490ceae88602 · 2020-08-08T10:01:36.000+03:00
Fixes: nodejs#33463
diff --git a/doc/api/readline.md b/doc/api/readline.md
@@ -356,6 +356,10 @@ async function processLineByLine() {
 }
 ```
 
+`readline.createInterface()` will start to consume the input stream once
+invoked. Having asynchronous operations between interface creation and
+asynchronous iteration may result in missed lines.
+
 ### `rl.line`
 <!-- YAML
 added: v0.1.98
