jest works without babelrc

.babelrc

-{
-  "presets": [
-    "react-native"
-  ]
-}

package.json

   "scripts": {
     "build": ":",
     "lint": "eslint src2",
-    "test:js": "jest --coverage",
+    "test:js": "BABEL_ENV=test jest --coverage",
     "test:android": "cd android && ./gradlew clean testDebugUnitTest",
     "test:ios": ":",
     "pretest": "npm run lint",
     "test": "npm run test:js && npm run test:android && npm run test:ios",
-    "test:watch": "jest --coverage --watch",
+    "test:watch": "BABEL_ENV=test jest --coverage --watch",
     "release": ": #npm version prerelease && npm publish --tag next && npm view react-native-navigation dist-tags && git push"
   },
   "peerDependencies": {
     "jest-cli": "17.x.x",
     "react-test-renderer": "15.4.1"
   },
+  "babel": {
+    "env": {
+      "test": {
+        "presets": [
+          "react-native"
+        ]
+      }
+    }
+  },
   "jest": {
     "preset": "react-native",
     "testPathDirs": [

src2/env.test.js

+describe('test environment', () => {
+  it('handles object spread', () => {
+    const {x, y, ...z} = {x: 1, y: 2, a: 3, b: 4};
+    expect(x).toEqual(1);
+    expect(y).toEqual(2);
+    expect(z).toEqual({a: 3, b: 4});
+  });
+
+  it('handles async await', async() => {
+    const result = await new Promise((r) => r('hello'));
+    expect(result).toEqual('hello');
+  });
+});