[jest-expo] fix jest-preset mutating react-native preset

expo · Jul 1, 2020 · 533b638 · 533b638
1 parent 9cb8d10
commit 533b638
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/jest-expo/jest-preset.js b/packages/jest-expo/jest-preset.js
@@ -1,8 +1,10 @@
 'use strict';
 
 const isEqual = require('lodash/isEqual');
+const cloneDeep = require('lodash/cloneDeep');
 // Derive the Expo Jest preset from the React Native one
-const jestPreset = require('react-native/jest-preset');
+const jestPresetOrigin = require('react-native/jest-preset');
+const jestPreset = cloneDeep(jestPresetOrigin);
 
 // transform
 if (!jestPreset.transform) {