From 63731f1628401040d3afc6068610e1a0a8a3d1c5 Mon Sep 17 00:00:00 2001
From: Giulio Canti <giulio.canti@gmail.com>
Date: Fri, 7 Jun 2024 16:04:49 +0200
Subject: [PATCH] Add `lastNonEmpty` function to `Chunk` module, closes #2946
 (#2951)

---
 .changeset/sour-waves-call.md |  5 +++++
 packages/effect/src/Chunk.ts  | 12 ++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 .changeset/sour-waves-call.md

diff --git a/.changeset/sour-waves-call.md b/.changeset/sour-waves-call.md
new file mode 100644
index 0000000000..f03637f0c8
--- /dev/null
+++ b/.changeset/sour-waves-call.md
@@ -0,0 +1,5 @@
+---
+"effect": minor
+---
+
+Add `lastNonEmpty` function to `Chunk` module, closes #2946
diff --git a/packages/effect/src/Chunk.ts b/packages/effect/src/Chunk.ts
index 4e3aa3cb32..ab7ddffab3 100644
--- a/packages/effect/src/Chunk.ts
+++ b/packages/effect/src/Chunk.ts
@@ -819,6 +819,8 @@ export const head: <A>(self: Chunk<A>) => Option<A> = get(0)
 /**
  * Returns the first element of this chunk.
  *
+ * It will throw an error if the chunk is empty.
+ *
  * @since 2.0.0
  * @category unsafe
  */
@@ -843,11 +845,21 @@ export const last = <A>(self: Chunk<A>): Option<A> => get(self, self.length - 1)
 /**
  * Returns the last element of this chunk.
  *
+ * It will throw an error if the chunk is empty.
+ *
  * @since 2.0.0
  * @category unsafe
  */
 export const unsafeLast = <A>(self: Chunk<A>): A => unsafeGet(self, self.length - 1)
 
+/**
+ * Returns the last element of this non empty chunk.
+ *
+ * @since 3.4.0
+ * @category elements
+ */
+export const lastNonEmpty: <A>(self: NonEmptyChunk<A>) => A = unsafeLast
+
 /**
  * @since 2.0.0
  */