From 66ae83e5693c0051c3199d0c7e54f4e34c9f0d6a Mon Sep 17 00:00:00 2001
From: Nicholas Cunningham <ndcunningham@gmail.com>
Date: Tue, 19 Mar 2024 12:00:35 -0600
Subject: [PATCH] fix(core): Should work if extends is a string

(cherry picked from commit a00f6438b9c4ed1aaae1dc4d3965dd9ec026a515)
---
 packages/eslint/src/generators/init/init-migration.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/eslint/src/generators/init/init-migration.ts b/packages/eslint/src/generators/init/init-migration.ts
index 372b5b04548d3..15e86df79b171 100644
--- a/packages/eslint/src/generators/init/init-migration.ts
+++ b/packages/eslint/src/generators/init/init-migration.ts
@@ -159,6 +159,12 @@ function migrateEslintFile(projectEslintPath: string, tree: Tree) {
         }
         // add extends
         json.extends = json.extends || [];
+
+        // ensure extends is an array
+        if (typeof json.extends === 'string') {
+          json.extends = [json.extends];
+        }
+
         const pathToRootConfig = `${offsetFromRoot(
           dirname(projectEslintPath)
         )}${baseFile}`;