Category: run

how to run mocha tests on asynchronous functions in script


// async/await
it('responds with matching records', async function() {
  const users = await db.find({ type: 'User' });
  users.should.have.length(3);
});
​
// promise.then()
it('should save without error', function(done) {
  var user = new User('Luna');
  user.save(function(err) {
    if (err) done(err);
    else done();
  });
});

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how to run multple port node


var http=require('http');
var ports = [7006, 7007, 7008, 7009];
var servers = [];
var s;
function reqHandler(req, res) {
    console.log({
        remoteAddress: req.socket.remoteAddress,
        remotePort: req.socket.remotePort,
        localAddress: req.socket.localAddress,
        localPort: req.socket.localPort,
    });
}
ports.forEach(function(port) {
    s = http.createServer(reqHandler);
    s.listen(port);
    servers.push(s);
});

var http=require('http');
var url = require('url');
var ports = [7006, 7007, 7008, 7009];
var servers = [];
var s;
function reqHandler(req, res) {
        var serPort=req.headers.host.split(":");
        console.log("PORT:"+serPort[1]);//here i get it using http header.
}
ports.forEach(function(port) {
    s = http.createServer(reqHandler);
    s.listen(port);
    servers.push(s);
});

var express = require('express');
​
let app1 = express();
let app2 = express();
​
app1.listen(3000, () => {
  console.log("Started server on 3000");
});
​
app2.listen(3002, () => {
  console.log("Started server on 3002");   
});

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how to run react native app


npm install -g react-native-cli
​
//cd to the file where your react native projects will be 
react-native init albums
​
// Run instructions for  IOS/Android
cd projects/albums 
​
npx react-native run-ios
npx react-native run-android
​

react-native run-android 
react-native run-ios

npm install -g react-native-cli

npx react-native init AwesomeProject
​

react-native start

$ npx react-native init firstapp
​

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how to run a cloned react native project


"dependencies": {
    ...
    "react-native": "myName/react-native#release/my-react-native-release"
}
​

sdk.dir=/Users/your_unix_name/android-sdk-macosx
ndk.dir=/Users/your_unix_name/android-ndk/android-ndk-r17c
​

git checkout -d release/my-react-native-release
docker run --rm --name rn-build -v $PWD:/pwd -w /pwd reactnativecommunity/react-native-android /bin/sh -c "./gradlew installArchives"
git add android --force
git commit -a -m 'my react native forked release'
git push
​

npm install --save github:facebook/react-native#master

gradle.projectsLoaded {
    rootProject.allprojects {
        buildDir = "/path/to/build/directory/${rootProject.name}/${project.name}"
    }
}

...
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath 'de.undercouch:gradle-download-task:4.0.0'
​
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
...

allprojects {
    repositories { ... }
​
    configurations.all {
        resolutionStrategy {
            dependencySubstitution {
                substitute module("com.facebook.react:react-native:+") with project(":ReactAndroid")
            }
        }
    }
}

...
include ':ReactAndroid'
​
project(':ReactAndroid').projectDir = new File(
    rootProject.projectDir, '../node_modules/react-native/ReactAndroid')
...

...
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
​
    implementation project(':ReactAndroid')
​
    ...
}
...

export ANDROID_SDK=/Users/your_unix_name/android-sdk-macosx
export ANDROID_NDK=/Users/your_unix_name/android-ndk/android-ndk-r17c
​

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