From 5bc5076451d12a7b642fa7cda7eedb78c194bf1f Mon Sep 17 00:00:00 2001
From: Ro Savage <rowan.savage@gmail.com>
Date: Sun, 28 May 2017 20:39:56 +1200
Subject: [PATCH] Revert to modulePathIgnorePatterns to fix issue with watchers
 crashing jest

---
 packages/react-scripts/scripts/utils/createJestConfig.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/packages/react-scripts/scripts/utils/createJestConfig.js b/packages/react-scripts/scripts/utils/createJestConfig.js
index 13ae8b30411..d998bdd7208 100644
--- a/packages/react-scripts/scripts/utils/createJestConfig.js
+++ b/packages/react-scripts/scripts/utils/createJestConfig.js
@@ -26,10 +26,11 @@ module.exports = (resolve, rootDir, isEjecting) => {
     collectCoverageFrom: ['src/**/*.{js,jsx}'],
     setupFiles: [resolve('config/polyfills.js')],
     setupTestFrameworkScriptFile: setupTestsFile,
-    testMatch: [
-      '<rootDir>/src/**/__tests__/**/*.js?(x)',
-      '<rootDir>/src/**/?(*.)(spec|test).js?(x)',
-    ],
+    // the `testMatches` option currently watches node_modules
+    // Which causes crashes on large projects on MacOS.
+    // Once this is fixes we can change from `modulePathIgnorePatterns` to `testMatches`.
+    // See facebook/jest/issues/1767 & facebookincubator/create-react-app/pull/2395
+    modulePathIgnorePatterns: ['<rootDir>\/(?!src).*\/.*'],
     testEnvironment: 'node',
     testURL: 'http://localhost',
     transform: {