From 950b316820c04518d30cf21ba10058052891df82 Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Sat, 22 Aug 2020 10:08:06 +0200
Subject: [PATCH] cli: switch ts-jest to use isolatedModules

---
 packages/cli/config/jest.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/cli/config/jest.js b/packages/cli/config/jest.js
index d95dd21489..cc7d45c139 100644
--- a/packages/cli/config/jest.js
+++ b/packages/cli/config/jest.js
@@ -37,7 +37,10 @@ async function getConfig() {
     // TODO: jest is working on module support, it's possible that we can remove this in the future
     transform: {
       '\\.esm\\.js$': require.resolve('jest-esm-transformer'),
-      '\\.(js|jsx|ts|tsx)$': require.resolve('ts-jest'),
+      '\\.(js|jsx|ts|tsx)$': [
+        require.resolve('ts-jest'),
+        { isolatedModules: true },
+      ],
       '\\.(bmp|gif|jpg|jpeg|png|frag|xml|svg)$': require.resolve(
         './jestFileTransform.js',
       ),