From d549bdff1d27406867ab938709ef27767595ae85 Mon Sep 17 00:00:00 2001
From: Jake Jarvis <jake@jarv.is>
Date: Fri, 18 Mar 2022 12:18:27 -0400
Subject: [PATCH] Add `.eslintrc.cjs` to list of supported `next lint` config
 files

See: https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
---
 packages/next/lib/eslint/runLintCheck.ts   | 2 ++
 test/integration/eslint/test/index.test.js | 1 +
 2 files changed, 3 insertions(+)

diff --git a/packages/next/lib/eslint/runLintCheck.ts b/packages/next/lib/eslint/runLintCheck.ts
index 8a50e8fab71e701..5a654d9f9e2538a 100644
--- a/packages/next/lib/eslint/runLintCheck.ts
+++ b/packages/next/lib/eslint/runLintCheck.ts
@@ -265,10 +265,12 @@ export async function runLintCheck(
 ): ReturnType<typeof lint> {
   try {
     // Find user's .eslintrc file
+    // See: https://eslint.org/docs/user-guide/configuring/configuration-files#configuration-file-formats
     const eslintrcFile =
       (await findUp(
         [
           '.eslintrc.js',
+          '.eslintrc.cjs',
           '.eslintrc.yaml',
           '.eslintrc.yml',
           '.eslintrc.json',
diff --git a/test/integration/eslint/test/index.test.js b/test/integration/eslint/test/index.test.js
index b6467f1cf5f7502..31c7be9898851f5 100644
--- a/test/integration/eslint/test/index.test.js
+++ b/test/integration/eslint/test/index.test.js
@@ -348,6 +348,7 @@ describe('ESLint', () => {
         (await findUp(
           [
             '.eslintrc.js',
+            '.eslintrc.cjs',
             '.eslintrc.yaml',
             '.eslintrc.yml',
             '.eslintrc.json',