Create react-native app

Author: Alex Lavrov

.gitignore

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+#npm
+node_modules/
+
+#IDE
+.idea
+
+#expo
+.expo

App.js

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+import React from 'react';
+import { StyleSheet, Text, View } from 'react-native';
+
+export default class App extends React.Component {
+  render() {
+    return (
+      <View style={styles.container}>
+        <Text>Open up App.js to start working on your app!</Text>
+        <Text>Changes you make will automatically reload.</Text>
+        <Text>Shake your phone to open the developer menu.</Text>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#fff',
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+});

App.test.js

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+import React from 'react';
+import App from './App';
+
+import renderer from 'react-test-renderer';
+
+it('renders without crashing', () => {
+  const rendered = renderer.create(<App />).toJSON();
+  expect(rendered).toBeTruthy();
+});

app.json

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+{
+  "expo": {
+    "sdkVersion": "27.0.0"
+  }
+}