From 55385af686d078997e3dde19bc4927a4a4a453bd Mon Sep 17 00:00:00 2001
From: dpiercey <dpiercey@ebay.com>
Date: Wed, 9 Oct 2024 13:20:20 -0700
Subject: [PATCH] fix: add back marko v3 legacy helpers

---
 .changeset/sour-carrots-ring.md    |  5 +++++
 packages/marko/helpers/README.md   |  3 +++
 packages/marko/helpers/empty.js    |  4 ++++
 packages/marko/helpers/notEmpty.js | 11 +++++++++++
 4 files changed, 23 insertions(+)
 create mode 100644 .changeset/sour-carrots-ring.md
 create mode 100644 packages/marko/helpers/README.md
 create mode 100644 packages/marko/helpers/empty.js
 create mode 100644 packages/marko/helpers/notEmpty.js

diff --git a/.changeset/sour-carrots-ring.md b/.changeset/sour-carrots-ring.md
new file mode 100644
index 000000000..29e5c4ee0
--- /dev/null
+++ b/.changeset/sour-carrots-ring.md
@@ -0,0 +1,5 @@
+---
+"marko": patch
+---
+
+Add back the "legacy helpers" from Marko 3 to simplify the process of upgrading some older applications.
diff --git a/packages/marko/helpers/README.md b/packages/marko/helpers/README.md
new file mode 100644
index 000000000..05552bdd3
--- /dev/null
+++ b/packages/marko/helpers/README.md
@@ -0,0 +1,3 @@
+# Marko Helpers
+
+This directory contains helpers that were deprecated in Marko v3. Marko v4/5 no longer adds these helpers to every compiled template, but you can still import them if needed.
diff --git a/packages/marko/helpers/empty.js b/packages/marko/helpers/empty.js
new file mode 100644
index 000000000..73f1f1061
--- /dev/null
+++ b/packages/marko/helpers/empty.js
@@ -0,0 +1,4 @@
+var notEmpty = require("./notEmpty");
+module.exports = function empty(o) {
+  return !notEmpty(o);
+};
diff --git a/packages/marko/helpers/notEmpty.js b/packages/marko/helpers/notEmpty.js
new file mode 100644
index 000000000..d07297f1f
--- /dev/null
+++ b/packages/marko/helpers/notEmpty.js
@@ -0,0 +1,11 @@
+module.exports = function (o) {
+  if (o == null) {
+    return false;
+  } else if (Array.isArray(o)) {
+    return !!o.length;
+  } else if (o === "") {
+    return false;
+  }
+
+  return true;
+};