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react-native-node

(★ 1,117)

Run a separate Node.js process behind a React Native app

파일 탐색기

최종 버전 다운로드 (.zip)

- FUNDING.yml
- build.gradle
- - build.gradle
  - gradle.properties
  - gradlew
  - gradlew.bat
  - settings.gradle
- - index.js
  - package.json
  - yarn.lock
- .babelrc
- .buckconfig
- .flowconfig
- .gitattributes
- .gitignore
- .watchmanconfig
- app.json
- index.android.js
- jsconfig.json
- package.json
- README.md
- yarn.lock
.eslintrc
.flowconfig
.gitignore
.npmignore
bin.js
CHANGELOG.md
index.js
LICENSE
package.json
README.md
screenshot.png

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/staltz/react-native-node

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd react-native-node

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Gradle (Java/Kotlin)

보통 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
JDK (Java) Java/Kotlin 프로젝트를 빌드/실행하려면 필요합니다.
Gradle 레포에 포함된 gradlew(Gradle Wrapper)를 쓰면 Gradle을 따로 설치할 필요가 없습니다.

cd android

이 프로젝트의 관련 파일이 하위 폴더 안에 있어서, 먼저 그 폴더로 이동합니다.

./gradlew build

Gradle로 빌드를 진행합니다.

✅ BUILD SUCCESSFUL 메시지가 뜨면 성공입니다. build/ 폴더에 결과물이 생성됩니다.

3. Node.js

쉬움

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Node.js npm 명령어를 쓰려면 Node.js가 설치되어 있어야 합니다. LTS(장기지원) 버전을 추천합니다.

npm install --save react-native-node

package.json에 명시된 라이브러리들을 내려받아 설치합니다.

✅ 명령어 실행 후 터미널에 나타나는 주소(보통 http://localhost:3000 형태)를 브라우저에서 열어보세요.

이 레포의 README에 적힌 실제 명령어를 그대로 가져왔습니다.

// repository documentation

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# React Native Node

*Run a **real** Node.js process in the background, behind a React Native app.*

**DEPRECATED. Please use [Node.js Mobile](https://code.janeasystems.com/nodejs-mobile/) by Janea Systems instead.** It has the same purpose as this library, but is more updated, and supports iOS. This library still works as documented, but I'm not committed to maintaining it anymore.

----------

Using this package you can: run `http` servers in Android, use Node streams, interface with the filesystem, off load some heavy processing out of the JS thread in React Native, and more! Running the real Node.js in Android, you can do everything that Node.js on desktop can.

[Example app](./example)

## Install

```
npm install --save react-native-node
```

```
react-native link react-native-node
```

## Usage

1. Develop the background Node.js project under some directory
    - e.g. `./background`

2. In your React Native JavaScript source files, spawn the background process:

```diff
+import RNNode from "react-native-node";

class MyApp extends Component {
   // ...
   componentDidMount() {
+    RNNode.start();
+    // or specify arguments to the process:
+    RNNode.start(['--color', 'red', '--port', '3000'])
   }

componentWillUnmount() {
+    RNNode.stop();
   }
   // ...
 }
```

3. Bundle and insert the background application into the mobile app using the command

```
./node_modules/.bin/react-native-node insert ./background
```

- Compresses your background app into `./android/app/src/main/res/raw/rnnodebundle`
- Updates `AndroidManifest.xml` to include a Service class

4. (Re)build the mobile app

```
react-native run-android
```

### Tip 1

If you want to bundle and insert the background app always before building the mobile app, make a `prestart` package.json script (assuming you use the `start` script):

```diff
 "scripts": {
+  "prestart": "react-native-node insert ./background",
   "start": "node node_modules/react-native/local-cli/cli.js start",
```

### Tip 2

You can reduce the size of the bundle file `rnnodebundle` by using a tool like [noderify](https://www.npmjs.com/package/noderify) to create a single js file.

### Tip 3

To debug, use `adb logcat` with the `nodejs` tag. For example with react:

```
adb logcat *:S nodejs:V ReactNative:V ReactNativeJS:V
```

These additional logging tags are used by `react-native-node`:
- `RNNodeThread` - will tell you if your process has started/terminated/errored
- `RNNodeService` - debug tar/untar, node binary preparation etc.
- `RNNode`

## FAQ

#### How is this possible?

Node.js v7.1.0 (with V8, not JavaScriptCore) was compiled to a binary `bin_node_v710` following the approach used by ["NodeBase"](https://github.com/dna2github/NodeBase). This binary is prebuilt and included in this library. If you are concerned about security, you shouldn't use the prebuilt binary, but compile it yourself.

#### What about iOS support?

We can't run V8 Node.js on iOS since that violates Apple's policy around Just-In-Time compilation, but ChakraCore Node.js can run on iOS. We are depending on [this project by Janea Systems](http://www.janeasystems.com/blog/node-js-meets-ios/) to open source their methods and include a proper open source license.

#### Does it support packages with native bindings?

Yes, in theory, but that's the job of individual libraries having native bindings for android. Most packages don't have. I believe sodium-native has. Hint: if you want to compile the native part of packages, I recommend not trying to cross-compile. Instead, install `termux` on an Android device and compile from the phone directly.

#### Why did you build this?

I am bringing the [Scuttlebutt](https://www.scuttlebutt.nz/) ecosystem to mobile, and I built the package [react-native-scuttlebot](https://github.com/ssbc/react-native-scuttlebot) which uses this tool as dependency. These are in turn used by the mobile app project [mmmmm](https://github.com/staltz/mmmmm-mobile).