From 7396e85e4aa5628b72f8d39f11b6a90919e34880 Mon Sep 17 00:00:00 2001
From: Daniel Kennedy <danwkennedy@github.com>
Date: Tue, 24 Feb 2026 12:21:35 -0500
Subject: [PATCH] Check for 0 sized artifact lists

---
 packages/artifact/__tests__/upload-artifact.test.ts   | 11 +++++++++++
 .../artifact/src/internal/upload/upload-artifact.ts   |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/packages/artifact/__tests__/upload-artifact.test.ts b/packages/artifact/__tests__/upload-artifact.test.ts
index f48f290a..9865815d 100644
--- a/packages/artifact/__tests__/upload-artifact.test.ts
+++ b/packages/artifact/__tests__/upload-artifact.test.ts
@@ -373,6 +373,17 @@ describe('upload-artifact', () => {
   })
 
   describe('skipArchive option', () => {
+    it('should throw an error if skipArchive is true and files array is empty', async () => {
+      const uploadResp = uploadArtifact(
+        fixtures.inputs.artifactName,
+        [],
+        fixtures.inputs.rootDirectory,
+        {skipArchive: true}
+      )
+
+      await expect(uploadResp).rejects.toThrow(FilesNotFoundError)
+    })
+
     it('should throw an error if skipArchive is true and multiple files are provided', async () => {
       const uploadResp = uploadArtifact(
         fixtures.inputs.artifactName,
diff --git a/packages/artifact/src/internal/upload/upload-artifact.ts b/packages/artifact/src/internal/upload/upload-artifact.ts
index 97c7545e..d7f0a6dc 100644
--- a/packages/artifact/src/internal/upload/upload-artifact.ts
+++ b/packages/artifact/src/internal/upload/upload-artifact.ts
@@ -32,6 +32,10 @@ export async function uploadArtifact(
 ): Promise<UploadArtifactResponse> {
   let artifactFileName = `${name}.zip`
   if (options?.skipArchive) {
+    if (files.length === 0) {
+      throw new FilesNotFoundError([])
+    }
+
     if (files.length > 1) {
       throw new Error(
         'skipArchive option is only supported when uploading a single file'