From 0b7476b4570f5630645420dbb0b8b753e04b5fe1 Mon Sep 17 00:00:00 2001
From: Kevin Ball <kmball11@gmail.com>
Date: Wed, 7 Dec 2022 17:05:39 -0800
Subject: [PATCH] feat(experimental-utils): console.warn on import of
 experimental-utils (#6179)

feat(experimental-utils) console.warn on import of experimental-utils
---
 packages/experimental-utils/package.json               |  1 +
 packages/experimental-utils/src/index.ts               |  8 +++++++-
 .../experimental-utils/tests/consoleWarning.test.ts    | 10 ++++++++++
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 packages/experimental-utils/tests/consoleWarning.test.ts

diff --git a/packages/experimental-utils/package.json b/packages/experimental-utils/package.json
index 0a55b72ffb4..86750adf3e8 100644
--- a/packages/experimental-utils/package.json
+++ b/packages/experimental-utils/package.json
@@ -35,6 +35,7 @@
     "postclean": "rimraf dist && rimraf _ts3.4 && rimraf coverage",
     "format": "prettier --write \"./**/*.{ts,mts,cts,tsx,js,mjs,cjs,jsx,json,md,css}\" --ignore-path ../../.prettierignore",
     "lint": "nx lint",
+    "test": "jest",
     "typecheck": "tsc -p tsconfig.json --noEmit"
   },
   "dependencies": {
diff --git a/packages/experimental-utils/src/index.ts b/packages/experimental-utils/src/index.ts
index ae481e0310b..c5cd3fec24e 100644
--- a/packages/experimental-utils/src/index.ts
+++ b/packages/experimental-utils/src/index.ts
@@ -1,2 +1,8 @@
-// TODO (#4139): Once typescript-eslint hits v7, this package will console.warn to switch...
+/* eslint-disable no-console */
+console.warn(
+  'This package is purely a re-export of `@typescript-eslint/utils`.',
+);
+console.warn(
+  'You should switch to importing from that non-experimental package instead.',
+);
 export * from '@typescript-eslint/utils';
diff --git a/packages/experimental-utils/tests/consoleWarning.test.ts b/packages/experimental-utils/tests/consoleWarning.test.ts
new file mode 100644
index 00000000000..08b13f74fce
--- /dev/null
+++ b/packages/experimental-utils/tests/consoleWarning.test.ts
@@ -0,0 +1,10 @@
+describe('importing', () => {
+  it('should console a warning', () => {
+    const warn = jest.spyOn(console, 'warn').mockImplementation(() => {});
+    require('../src/index');
+    expect(warn).toHaveBeenCalledTimes(2);
+    expect(warn).toHaveBeenLastCalledWith(
+      'You should switch to importing from that non-experimental package instead.',
+    );
+  });
+});