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‎.gitignore

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# OSX
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#
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.DS_Store
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# Xcode
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#
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build/
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*.pbxuser
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!default.pbxuser
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*.mode1v3
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!default.mode1v3
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*.mode2v3
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!default.mode2v3
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*.perspectivev3
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!default.perspectivev3
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xcuserdata
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*.xccheckout
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*.moved-aside
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DerivedData
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*.hmap
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*.ipa
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*.xcuserstate
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project.xcworkspace
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# Android/IntelliJ
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#
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build/
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.idea
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.gradle
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local.properties
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*.iml
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*.hprof
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# node.js
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#
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node_modules/
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npm-debug.log
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yarn-error.log
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# BUCK
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buck-out/
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\.buckd/
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*.keystore
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# fastlane
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#
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# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
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# screenshots whenever they are needed.
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# For more information about the recommended setup visit:
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# https://docs.fastlane.tools/best-practices/source-control/
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*/fastlane/report.xml
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*/fastlane/Preview.html
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# Bundle artifact
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*.jsbundle
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# Test artifact
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artifacts/
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# coverage
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coverage/
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# CocoaPods
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/ios/Pods/
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/ios/Pods-bak/
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# local yarn settings
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.yarn/
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.yarnrc
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.env*

‎App.js

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import React, {
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forwardRef,
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useRef,
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useState,
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useEffect,
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useImperativeHandle,
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} from "react";
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import {
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SafeAreaView,
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View,
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Text,
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TextInput,
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ScrollView,
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TouchableOpacity,
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Alert,
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} from "react-native";
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import WebView from "react-native-webview";
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const OpenpgpWebView = forwardRef(({ publicKey, message, onDone }, ref) => {
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const webViewRef = useRef(null);
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useImperativeHandle(ref, () => ({
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encrypt: encrypt,
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}));
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function encrypt(publicKey, message) {
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if (webViewRef?.current != null && publicKey != null && message != null) {
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const jscode = `(async () => {
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const publicKey = '${publicKey}';
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const _message = '${message}';
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try {
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const message = await openpgp.createMessage({
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text: _message,
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});
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const decodedPublicKey = await openpgp.readKey({
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armoredKey: atob(publicKey),
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});
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const encrypted = await openpgp.encrypt({
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message,
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encryptionKeys: decodedPublicKey,
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});
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window.ReactNativeWebView.postMessage(btoa(encrypted));
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} catch (ex) {
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window.ReactNativeWebView.postMessage('error');
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alert(ex);
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}
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})();
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true;`;
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console.log("injecting script...");
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try {
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webViewRef.current.injectJavaScript(jscode);
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} catch (ex) {
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Alert.alert(ex);
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}
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}
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}
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return (
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<View
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pointerEvents="none"
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style={{ position: "absolute", zIndex: -100, opacity: 0 }}
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>
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<WebView
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style={{ opacity: 0.99 }}
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incognito={true}
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ref={(ref) => (webViewRef.current = ref)}
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onMessage={(event) => {
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onDone && onDone(event.nativeEvent.data);
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}}
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javaScriptEnabled
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startInLoadingState
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allowUniversalAccessFromFileURLs={true}
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source={{
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html: `<html><body><script src="https://unpkg.com/[email protected]/dist/openpgp.min.js"></script><div>hello word</div></body></html>`,
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}}
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/>
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</View>
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);
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});
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const App = () => {
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// public key must without spaces, linebreaks or other invalid characters
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const publicKey = `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`;
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const [message, setMessage] = useState("");
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const [btnDisabled, setBtnDisabled] = useState(!message);
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const [result, setResult] = useState(null);
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const openpgpRef = useRef(null);
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useEffect(() => {
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setBtnDisabled(!message);
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}, [message]);
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function handleBtnPress() {
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if (openpgpRef?.current) {
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setResult(null);
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openpgpRef.current.encrypt(publicKey, message);
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}
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}
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function handleEncryptedDone(encryptedMessage) {
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setResult(encryptedMessage);
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}
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return (
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<SafeAreaView style={{ flex: 1 }}>
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<OpenpgpWebView
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ref={(ref) => (openpgpRef.current = ref)}
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onDone={handleEncryptedDone}
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/>
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<ScrollView keyboardShouldPersistTaps="handled">
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<Text
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style={{
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fontSize: 22,
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paddingHorizontal: 40,
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marginTop: 40,
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color: "#222",
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}}
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>
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This is an simple example of running
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<Text style={{ color: "blue" }}>{` openpgpjs `}</Text>
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in React Native through
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<Text style={{ color: "red" }}>{` react-native-webview`}</Text>.
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</Text>
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<TextInput
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placeholder="message to encrypt"
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numberOfLines={1}
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style={{
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marginHorizontal: 40,
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height: 40,
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fontSize: 20,
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color: "#222",
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borderBottomColor: "rgba(0,0,0,0.5)",
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borderBottomWidth: 0.5,
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}}
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onChangeText={(value) => setMessage(value)}
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value={message}
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/>
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<TouchableOpacity
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onPress={handleBtnPress}
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disabled={btnDisabled}
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style={{
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width: 120,
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height: 48,
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borderRadius: 24,
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backgroundColor: btnDisabled ? "#ddd" : "red",
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justifyContent: "center",
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alignItems: "center",
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marginTop: 20,
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alignSelf: "center",
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}}
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>
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<Text style={{ fontSize: 16, color: "#fff" }}>Encrypt</Text>
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</TouchableOpacity>
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<Text style={{ paddingHorizontal: 40, marginTop: 20 }}>{result}</Text>
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</ScrollView>
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</SafeAreaView>
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);
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};
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export default App;

‎Gemfile

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source 'https://rubygems.org'
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# You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
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ruby '2.7.4'
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gem 'cocoapods', '~> 1.11', '>= 1.11.2'

‎Gemfile.lock

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GEM
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remote: https://rubygems.org/
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specs:
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CFPropertyList (3.0.5)
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rexml
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activesupport (6.1.5.1)
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concurrent-ruby (~> 1.0, >= 1.0.2)
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i18n (>= 1.6, < 2)
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minitest (>= 5.1)
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tzinfo (~> 2.0)
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zeitwerk (~> 2.3)
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addressable (2.8.0)
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public_suffix (>= 2.0.2, < 5.0)
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algoliasearch (1.27.5)
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httpclient (~> 2.8, >= 2.8.3)
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json (>= 1.5.1)
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atomos (0.1.3)
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claide (1.1.0)
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cocoapods (1.11.3)
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addressable (~> 2.8)
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claide (>= 1.0.2, < 2.0)
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cocoapods-core (= 1.11.3)
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cocoapods-deintegrate (>= 1.0.3, < 2.0)
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cocoapods-downloader (>= 1.4.0, < 2.0)
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cocoapods-plugins (>= 1.0.0, < 2.0)
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cocoapods-search (>= 1.0.0, < 2.0)
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cocoapods-trunk (>= 1.4.0, < 2.0)
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cocoapods-try (>= 1.1.0, < 2.0)
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colored2 (~> 3.1)
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escape (~> 0.0.4)
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fourflusher (>= 2.3.0, < 3.0)
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gh_inspector (~> 1.0)
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molinillo (~> 0.8.0)
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nap (~> 1.0)
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ruby-macho (>= 1.0, < 3.0)
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xcodeproj (>= 1.21.0, < 2.0)
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cocoapods-core (1.11.3)
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activesupport (>= 5.0, < 7)
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addressable (~> 2.8)
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algoliasearch (~> 1.0)
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concurrent-ruby (~> 1.1)
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fuzzy_match (~> 2.0.4)
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nap (~> 1.0)
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netrc (~> 0.11)
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public_suffix (~> 4.0)
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typhoeus (~> 1.0)
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cocoapods-deintegrate (1.0.5)
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cocoapods-downloader (1.6.3)
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cocoapods-plugins (1.0.0)
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nap
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cocoapods-search (1.0.1)
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cocoapods-trunk (1.6.0)
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nap (>= 0.8, < 2.0)
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netrc (~> 0.11)
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cocoapods-try (1.2.0)
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colored2 (3.1.2)
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concurrent-ruby (1.1.10)
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escape (0.0.4)
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ethon (0.15.0)
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ffi (>= 1.15.0)
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ffi (1.15.5)
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fourflusher (2.3.1)
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fuzzy_match (2.0.4)
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gh_inspector (1.1.3)
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httpclient (2.8.3)
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i18n (1.10.0)
67+
concurrent-ruby (~> 1.0)
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json (2.6.1)
69+
minitest (5.15.0)
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molinillo (0.8.0)
71+
nanaimo (0.3.0)
72+
nap (1.1.0)
73+
netrc (0.11.0)
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public_suffix (4.0.7)
75+
rexml (3.2.5)
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ruby-macho (2.5.1)
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typhoeus (1.4.0)
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ethon (>= 0.9.0)
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tzinfo (2.0.4)
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concurrent-ruby (~> 1.0)
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xcodeproj (1.21.0)
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CFPropertyList (>= 2.3.3, < 4.0)
83+
atomos (~> 0.1.3)
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claide (>= 1.0.2, < 2.0)
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colored2 (~> 3.1)
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nanaimo (~> 0.3.0)
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rexml (~> 3.2.4)
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zeitwerk (2.5.4)
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PLATFORMS
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ruby
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DEPENDENCIES
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cocoapods (~> 1.11, >= 1.11.2)
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96+
RUBY VERSION
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ruby 2.7.4p191
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BUNDLED WITH
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2.2.27

‎__tests__/App-test.js

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/**
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* @format
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*/
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import 'react-native';
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import React from 'react';
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import App from '../App';
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// Note: test renderer must be required after react-native.
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import renderer from 'react-test-renderer';
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it('renders correctly', () => {
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renderer.create(<App />);
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});

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