Iterator.concat is Stage 4

robpalme · web-flow · commit c3dda6d19d65 · 2025-12-07T10:15:38.000Z
diff --git a/README.md b/README.md
@@ -3,7 +3,7 @@ Iterator Sequencing
 
 A TC39 proposal to create iterators by sequencing existing iterators.
 
-**Stage:** 3
+**Stage:** 4
 
 **Specification:** https://tc39.es/proposal-iterator-sequencing/
 
