[jest-expo] fix jest-preset mutating react-native preset (#9051)

expo · Dec 3, 2020 · c0c386e · c0c386e
1 parent 588113e
commit c0c386e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/packages/jest-expo/jest-preset.js b/packages/jest-expo/jest-preset.js
@@ -1,8 +1,9 @@
 'use strict';
 
+const cloneDeep = require('lodash/cloneDeep');
 const isEqual = require('lodash/isEqual');
 // Derive the Expo Jest preset from the React Native one
-const jestPreset = require('react-native/jest-preset');
+const jestPreset = cloneDeep(require('react-native/jest-preset'));
 
 // transform
 if (!jestPreset.transform) {