How to use a native node.js addon in React - c++

I have a react project in which I would like to use this native node.js addon, which is a wrapper for a C++ SDK.
I've successfully used this module in the past within an Electron project, and can run the sample successfully with node as well.
My question is how I would be able to use this in React, or write my own React friendly solution using the C++ SDK.
I've tried to clone the module and place it under a lib folder in my react project, I ran npm install within that folder to install it's dependencies and tried to run the included example directly with node. This went fine. But using the sample directly from within my React app fails with the following error code ts3client.on is not a function.
So it passes the line were the library is required with var ts3client = require('../../lib/node-ts3sdk-client/api.js'); but that's the furthest I managed to get. I could play around a little bit more, but would like to get some opinions on what might be the best approach here.
Edit
As requested I have added a small example to reproduce the issue I am facing.
Create a simple react app
npm init react-app so-node-addon-react
Clone this repository under src/lib/
git clone https://github.com/svenpaulsen/node-ts3sdk-client.git
Install the module's dependencies
cd node-ts3sdk-client
npm install
Expose some part of the client example by wrapping the try-catch block starting from line 160 in an exported function like so
export function connect() {
try { ... }
catch { ... }
}
Call the function from your project's App.tsx
import { connect } from './lib/node-ts3sdk-client/examples/client_minimal'
...
connect()
Run the project
npm start
This should result in the following error: ts3client.on is not a function

Related

Vendoring npm packages in deno

How does one vendor a npm package in deno?
import_map.json:
{
"imports": {
"lume/": "https://deno.land/x/lume#v1.12.1/",
}
}
Lume has some npm dependencies, like https://registry.npmjs.org/markdown-it/-/markdown-it-13.0.0.tgz.
deno.jsonc:
{
"importMap": "import_map.json",
}
dev_deps.ts:
export * as lume from "https://deno.land/x/lume#v1.12.1/mod.ts";
command:
$ deno vendor --force --unstable dev_deps.ts
# ...
Download https://registry.npmjs.org/markdown-it-attrs/-/markdown-it-attrs-4.1.3.tgz
# ...
thread 'main' panicked at 'Could not find local path
for npm:markdown-it-attrs#4.1.3', cli/tools/vendor/mappings.rs:138:11
I tried adding export * as ma from "npm:markdown-it-attrs"; to dev_depts.ts, but it did nothing.
I found the following issue on github.
Maybe this issue does have something to do with it.
I didn't find anything about how to resolve the problem in the official deno documentation and the lume documentation.
Unfortunately, currently you cannot use import_map in your Deno project if your goal is to publish a module that aims to be used in other applications, simply because you don't handle the way deno runtime will start.
From the application point of view, the deno run command cannot search every import_map configurations in your dependencies and handle them properly.
The import_map feature should be used only at end application level.
The fallback is to use by onvention a deps.ts source file to centralize all your dependencies.

Looking for documentation setup jest for unit test of admin plugin

my project was created with the swdc create-project ...
Is there a documentation, a tutorial or description for the right setup/configuration unit testing with JEST for custom plugin in administration?
This tutorial describes only how to write a test
But i think there must be a official setup documentation because of versions etc.
EDIT: a tutorial with code is now avialable
Using the suggested solution and execute the test, throws an configuration error:
● Test suite failed to run
Configuration error:
Could not locate module src/core/factory/module.factory mapped as:
undefined/src$1.
Please check your configuration for these entries:
{
"moduleNameMapper": {
"/^src(.*)$/": "undefined/src$1"
},
"resolver": undefined
}
...
Cause of error:
process.env.ADMIN_PATH not setted but required in %Project%/custom/plugins/%MyPlugin%/src/Resources/app/administration/node_modules/#shopware-ag/jest-preset-sw6-admin/jest-preset.js
My solution:
set process.env.ADMIN_PATH in %Project%/custom/plugins/%MyPlugin%/src/Resources/app/administration/jest.config.js
// jest.config.js
...
const { join, resolve } = require('path');
process.env.ADMIN_PATH = resolve('../../../../../../../src/Administration/Resources/app/administration');
...
I think it is easiest to just copy and adapt from a plugin that already has jest tests set up. Look at the administration directory for SwagPayPal for example. Copy the dependency and script sections from their package.json. Also copy the entire jest.config.js. Then within the administration directory of your plugin you should be able to npm install followed by npm run unit or npm run unit-watch and it should find *.spec.js files within the test sub-directory.

Headless testing with JavaFx and TestFx

I have a simple JavaFx application (Java 8) that has a unit test using TestFx. However, when the test is run, the application window starts up and the mouse is moved to do whatever action is in my test. Can these tests be run in a way where the application doesn't popup and I can still use my mouse for other things as the automated build and tests are running?
Update:
I found this blog post that provides the solution for me to this problem. As the author suggests, you need to add the following dependency to your build:
testRuntime 'org.testfx:openjfx-monocle:1.8.0_20'
Then you will need to include the following somewhere before you call registerPrimaryStage(), in my case in a method marked with #BeforeClass as I am using JUnit:
System.setProperty("testfx.robot", "glass");
System.setProperty("testfx.headless", "true");
System.setProperty("prism.order", "sw");
System.setProperty("prism.text", "t2k");
I would also add that its useful to include System.setProperty("java.awt.headless", "true") to ensure that you're not relying on anything from the AWT (in my case I had a call to get the size of the screen that was causing problems). I also followed the blog author's advice to add a switch to turn headless mode on and off. This gives the final method as follows:
#BeforeClass
public static void setupSpec() throws Exception {
if (Boolean.getBoolean("headless")) {
System.setProperty("testfx.robot", "glass");
System.setProperty("testfx.headless", "true");
System.setProperty("prism.order", "sw");
System.setProperty("prism.text", "t2k");
System.setProperty("java.awt.headless", "true");
}
registerPrimaryStage();
}
You can see the solution in context here
Original Answer:
If you're using Linux, you can use xvfb for this. On a Debian-based system you can install xvfb as follows:
$ sudo apt-get install xvfb
With xvfb installed, run the following before you run your tests:
$ Xvfb :99 &>/dev/null &
$ export DISPLAY=:99
If you launch your tests in the same console TestFX will use the frame buffer instead of your main display. Thus the tests will run but you won't be bothered with windows opening and the mouse pointer being moved around.
I would agree with KDK for using Monocle, since it does work as charm with Jenkins. I couldn't have reliable result from Xvfb on Jenkins. Below is the steps I took and works for me.
Prepare Monocle
You want to download Monocle from Monocle Github. It looks there is api change, so you would want to edit MonocleView.java with adding below method after download. I'm not sure what I should put in the method, but found it just works without implementing it.
#Override
protected int _getNativeFrameBuffer(long ptr) {
// TODO Auto-generated method stub
return 0;
}
Install Monocle
Build the Monocle jar and put the jar into your JRE (under jre/lib/ext path)
Run Monocle with Glass lib
Below is my maven command used in jenkins, you will have interest on java runtime option portion.
$ mvn clean install -Dtestfx.robot=glass -Dglass.platform=Monocle -Dmonocle.platform=Headless -Dprism.order=sw
Yes, it is possible to perform headless testing of JavaFx2 applications.
You will need Monocle(part of OpenJFX). More details here:
https://github.com/TestFX/Monocle

How to use third party npm packages with ember cli app

EDIT: this is actually about any npm package which is not designed to play along with ember. In my case, I tried to make crypto-js work, but it seems to be always the same trouble with any npm package not specially designed for ember cli.
I want to use cryptoJS in my ember app, which I'm currently refactoring with ember cli, but I'm having a lot of trouble importing all the third party packages and libraries I'm already using, like for example cryptoJS.
CryptoJS at least has a package for npm, I don't even want to think about what happens if some of my included libraries don't have a package...
Am I just missing the point in the documentation of ember-cli or is it really not described how to import other npm packages and also how to inlcude non-package libraries properly to keep them under version control and dependency control?
If I follow the description of the crypto-js package manual:
var CryptoJS = require("crypto-js");
console.log(CryptoJS.HmacSHA1("Message", "Key"));
I get and error in my ember build
utils/customauthorizer.js: line 1, col 16, 'require' is not defined.
Thanks for any help on this, I'm very excited about the ember cli project, but importing my existing ember app has been quite painful so far...
EDIT:
Just importing unfortunately does not work.
import CryptoJS from 'crypto-js';
throws during the build
daily#dev1:~/VMD$ ember build
version: 0.1.2
Build failed.
File: vmd/utils/customauthorizer.js
ENOENT, no such file or directory '/home/daily/VMD/tmp/tree_merger-tmp_dest_dir-F7mfDQyP.tmp/crypto-js.js'
Error: ENOENT, no such file or directory '/home/daily/VMD/tmp/tree_merger-tmp_dest_dir-F7mfDQyP.tmp/crypto-js.js'
at Error (native)
at Object.fs.statSync (fs.js:721:18)
at addModule (/home/daily/VMD/node_modules/ember-cli/node_modules/broccoli-es6-concatenator/index.js:84:46)
at addModule (/home/daily/VMD/node_modules/ember-cli/node_modules/broccoli-es6-concatenator/index.js:133:9)
at addModule (/home/daily/VMD/node_modules/ember-cli/node_modules/broccoli-es6-concatenator/index.js:133:9)
at /home/daily/VMD/node_modules/ember-cli/node_modules/broccoli-es6-concatenator/index.js:59:7
at $$$internal$$tryCatch (/home/daily/VMD/node_modules/ember-cli/node_modules/rsvp/dist/rsvp.js:470:16)
at $$$internal$$invokeCallback (/home/daily/VMD/node_modules/ember-cli/node_modules/rsvp/dist/rsvp.js:482:17)
at $$$internal$$publish (/home/daily/VMD/node_modules/ember-cli/node_modules/rsvp/dist/rsvp.js:453:11)
at $$rsvp$asap$$flush (/home/daily/VMD/node_modules/ember-cli/node_modules/rsvp/dist/rsvp.js:1531:9)
The easiest and recommended answer is to use ember-browserify. (as support for bower packages will be removed in the future.)
This is an example for using the npm package dexie within an Ember CLI app.
Install browserify: npm install ember-browserify --save-dev
Install dexie (or whatever module you need): npm install dexie --save-dev
Import the module like this: import Dexie from 'npm:dexie';
UPDATE (April 2021):
ember-browserify has now been is deprecated in favor of either ember-auto-import or ember-cli-cjs-transform
(see the deprecation warning at the top of ember-browserify)
UPDATE: I got this to work much better and straight forward! Thanks to the comment of #j_mcnally!
Will leave the first answer down there so everyone can see what trouble I was coming from :)
What I did:
bower install crypto-js=svn+http://crypto-js.googlecode.com/svn/#~3.1.2 --save
In my file Brocfile.js I could just do app.import('bower_components/crypto-js/build/rollups/hmac-md5.js');
No manual downloading or moving files, just managing a dependency, much better solution!
But honestly, it was still a lot of vodoo! Until I found the documentation... sweet: http://bower.io/docs/api/#install
OLD approach
I got this to work, but I can not tell how pretty or correct that approach is. Including third party packages or libraries with ember cli is pretty far away from straight forward or self explaining.
The ressources which led me to my working solution were:
how to use third party javascript from ember-cli route
https://github.com/stefanpenner/ember-cli/issues/757
The following steps I took to get it working:
I manually downloaded the library https://code.google.com/p/crypto-js/downloads/detail?name=CryptoJS%20v3.1.2.zip and unziped it
I manually created a directory in my vendor directory: mkdir vendor/crypto-js
I appended app.import('vendor/crypto-js/hmac-md5.js'); to the Brocfile.js file
I added "CryptoJS" to the "predef" key in the .jshintrc file
Then the build worked and I could eventually use the library.
Sadly I didn't get the npm package to work! I had to manually download the zip file, unzip it and move it to the correct location and if the version changes, it's not under any version/dependency control... I will not mark this as an answer, since it does not satisfy me at all, but at least I wanted to share what I did to make it work for me.
As Timm describes, using browserify gets the code injected into your ember app. However, I was having trouble actually using the injected module. In order to do that I had to actually create the module with New before I could use it:
In order to import an NPM module.
1) install browserify:
npm install ember-browserify --save-dev
2) install your modele:
npm install my-module --save-dev
3) Import your module into your ember file of interest (app/controller/post.js):
import Module from 'npm:my-module';
4) use the module from within your code by creating the module with New:
var output = new Module(var1, var2, etc.);
even though this is an old thread thought I would contribute as I spent a while doing this. The specific package I was trying to link to ember was 'd3plus' and had to do a variety of things to get it to work.
npm install ember-browserify --save-dev
npm install d3plus --save-dev
ember install ember-cli-coffeescript
npm install --save-dev coffeeify coffeescript
then in your component do
import d3plus from 'npm:d3plus';
For a long time I was getting runtime errors when it was searching for the coffescript and figured this would be helpful for people specifically looking for d3plus.
As stated by Pablo Morra on a comment of the simplabs' post "Using npm libraries in Ember CLI", third party npm modules can be imported on Ember.js from version 2.15 directly without the need of addons or wrappers:
https://www.emberjs.com/blog/2017/09/01/ember-2-15-released.html#toc_app-import-files-within-node_modules
Unfortunately documentation is still on work and it doesn't say that npm modules can be imported, only bower and vendor ones:
https://github.com/emberjs/guides/issues/2017
https://guides.emberjs.com/v3.0.0/addons-and-dependencies/managing-dependencies/
I've gotten 2 solutions to import third party npm modules directly on Ember.js from the Ember CLI documentation about managing dependencies, although it's also out-of-date and says that npm modules can't be imported, only bower and vendor ones:
npm module as Standard Anonymous AMD Asset
https://ember-cli.com/managing-dependencies#standard-anonymous-amd-asset
AMD: Asynchronous Module Definition
I prefer and use this way because it avoids global variables and follows the import convention of Ember.js.
ember-cli-build.js:
app.import('node_modules/ic-ajax/dist/amd/main.js', {
using: [
{ transformation: 'amd', as: 'ic-ajax' }
]
});
amd is the type of transformation applied, and ic-ajax is the module name to be used when it's imported on a javascript file.
on Ember.js javascript file (router, component...):
import raw from 'ic-ajax';
// ...
icAjaxRaw( /* ... */ );
raw is a module exported by ic-ajax.
That's the way it worked for me although the Ember CLI documentation shows the import other way that didn't work for me, maybe because of the specific package I was importing:
import { raw as icAjaxRaw } from 'ic-ajax';
//...
icAjaxRaw( /* ... */ );
npm module as global variable
https://ember-cli.com/managing-dependencies#standard-non-amd-asset
ember-cli-build.js:
app.import('node_modules/moment/moment.js');
on Ember.js javascript file (router, component...):
/* global moment */
// No import for moment, it's a global called `moment`
// ...
var day = moment('Dec 25, 1995');
/* global moment */ is an annotation for ESLint not to show an error when building the project because moment() is not defined in the file.
npm module as Standard Named AMD Asset
https://ember-cli.com/managing-dependencies#standard-named-amd-asset
Ember CLI also shows a third option that didn't work for me, maybe because of the specific package I was importing:
ember-cli-build.js:
app.import('node_modules/ic-ajax/dist/named-amd/main.js');
on Ember.js javascript file (router, component...):
import { raw as icAjaxRaw } from 'ic-ajax';
//...
icAjaxRaw( /* ... */ );
npm module as AMD JavaScript modules
https://guides.emberjs.com/v3.0.0/addons-and-dependencies/managing-dependencies/#toc_amd-javascript-modules
The way described on Ember.js documentation about Managing Dependencies didn't work for me either, maybe because of the specific package I was importing:
ember-cli-build.js:
app.import('node_modules/ic-ajax/dist/named-amd/main.js', {
exports: {
'ic-ajax': [
'default',
'defineFixture',
'lookupFixture',
'raw',
'request'
]
}
});
on Ember.js javascript file (router, component...):
import { raw as icAjaxRaw } from 'ic-ajax';
//...
icAjaxRaw( /* ... */ );

Why `#import("dart:unittest")` can't run?

I write some dart test code:
#import("dart:unittest");
main() {
test('this is a test', () {
int x = 2+3;
expect(x).equals(5);
});
}
It doesn't display any error in dart editor, but when I press the "run" button, it reports:
Do not know how to load 'dart:unittest''file:///home/freewind/dev/dart/editor
/samples/shuzu.org/test/model_test.dart':
Error: line 1 pos 1: library handler failed
#import("dart:unittest");
^
I see there is a "dart:unittest" library in my dart-sdk. Why it can't be run?
Unfortunately, the unittest library is not yet wired into the dart: namespace. Until that happens, if it ever happens, you'll need to use a relative path to get to the unittest library.
Something like:
#import('path-to-dart/lib/unittest/unitest.dart');
More examples are here: http://api.dartlang.org/unittest.html
This page keeps showing up in Google results for dart and unittest, so I thought I would add an update. The unittest library is now installed quite easily through pub, Dart's package manager. To do this, make sure that you:
check Add pub support when you create a new Dart application.
Then add (or uncomment) the dependency for the unittest package in your pubspec.yaml file. That file should look like this:
name: range
description: A sample application
dependencies:
unittest: { sdk: unittest }
Run pub install (although if you are using Dart Editor, this command should automatically get run for you). Then, in the file where you will be writing your tests,
add this import declaration:
import "package:unittest/unittest.dart";
And you should be good to go.