How to install phantomjs in Meteorjs? - meteor

How to install phantomjs in Meteor js?
I want to use in conjunction with Iago Spiderable.
o/s: Windows 7 64bit

Just make sure you add the directory where Phantom is installed to PATH
From the Meteor documentation:
When a spider requests an HTML snapshot of a page the Meteor server runs the client half of the application inside phantomjs, a headless browser, and returns the full HTML generated by the client code.
...
If you deploy your application with meteor bundle, you must install phantomjs (http://phantomjs.org) somewhere in your $PATH. If you use meteor deploy this is already taken care of.
[1]http://docs.meteor.com/#spiderable

I would like to let you know that there is package available for meteor
https://atmosphere.meteor.com/package/phantomjs
not sure if that is compatible with windows.

Related

How to run angular 2 application?

I have downloaded angular 2 application from this link:
https://github.com/aravindfz/firstAngular2App
How to run this application?
Which angular cli version install to run angular 2 application?
I tried from some questions stackoverflow but not working properly.guys this question is not duplicate..Please understand.
Anyone can give clear details?
I need step by step procedure.
If you cloned the repo and did nothing else, there are a few things you need to do before you can run the app. Since I don't know how much web development you have done, I'm going to include things some people will think unnecessary.
Install node.js, if you haven't yet. Grab the LTS release from https://nodejs.org/en/. Do not use the "Current" version, because that may not be compatible with Angular just yet. If you have and older version of Node, upgrade. If you already have the LTS version, skip this step.
Now open a new command prompt or terminal and change to the directory where you cloned the repo. To be sure you're in the right place, make sure you can see a file named package.json.
In this command prompt/terminal window, execute this command: npm install. This will download and install all the dependencies (which could rather disturbingly add up to a few hundred Megabytes). You may experience timeout errors if you're behind a corporate proxy server. That's not something you can fix as of 2018. Just connect using something else and try again.
Once everything is installed, you should be able to run the Angular app. Everything I mentioned already only need to be done before you run it the first time. To ensure you are in the right folder, navigate to where your index.html is located and run this command: ng serve. If ng cannot be found, you may need to install it. To do so, execute npm install --save-dev #angular/cli. Now it should work. If not, close your command prompt/terminal window, open a new one and try ng serve again.
Once ng serve is finished compiling, you should be able to view your app by opening http://localhost:4200 in your favourite browser.
And that's it!
Here's a bonus tip: Take the time to work through the official Angular Quick Start. It really is a fantastic guide and will get you skilled up much quicker than just hacking it ever will.
Good luck.

Can a Polymer 2.0 PWA be served over HTTPS?

I am trying to build my first progressive web app, using the Polymer CLI. I am trying to make my app to load an NPM package, but the console was showing an error when loading it. I think I resolved this issue by moving the dependency into a different directory, as I no longer receive that error in the console. However, my package still isn't executing it's intended purpose. I think this is because polymer serve serves on HTTP by default, while my package seems to require HTTPS. I looked at these articles on the polymer website (https://developers.google.com/web/updates/2014/11/Support-for-installable-web-apps-with-webapp-manifest-in-chrome-38-for-Android , https://www.polymer-project.org/2.0/toolbox/), but they don't seem to refer to HTTPS at all. Am I on a wild goose chase, trying to serve over HTTPS?
Yes, Polymer apps can run over HTTPS. The documentation just needs to be updated. You might find something useful in the polyserve README or in running polymer --help.
As of version 0.4.0, you can use the -P flag of polymer-cli to enable HTTPS:
polymer serve -P https
or enable HTTP2 (uses HTTPS, requires Node 5 or newer) with:
polymer serve -P h2

Using C/C++ Modules in Meteor Tutorial

Does anyone have a tutorial how to use a C++ module from NPM in Meteor? Running the normal: meteor npm install and importing with the package returns this message.
Error: module.useNode() must succeed for native .node modules
You're probably using an unusual server configuration. Some common problems that break compilation are:
Incorrect permissions for various directories. This may mean you've been running as root for some meteor installation commands, which then prevents the local user's access to those directories for compilation.
A missing or broken compiler toolchain.
A bad package or one that is untested for your hosting platform.
I'd discourage you from trying to run locally on an desktop Linux installation if you're unfamiliar with some of these gotchas. Use a virtual machine for development. I'd recommend Vagrant using IntelliJ's WebStorm for native integration.
Meteor is generally deployed on Linux using the Amazon AMI or Ubuntu on AWS, Galaxy or Modulus.
If you think everything's in order and you're having issues with Galaxy or Modulus, reach out to their support.

Meteor android build version

I have a strange issue. I build my Meteor app and run it on android device using -
meteor run android-device --mobile-server=<my_aws_ip>:3000
When the app deploys immediately it connects to the server (and my javascripts etc works). After a few seconds, the page refreshs and none of the javascript callbacks work. Please help me debug this issue.
More information: If I change the client (and not the server), and deploy it, for the first few seconds, the changed client gets shown on the phone. After the first few seconds, the version which is present on the server is shown. So I think Cordova or Meteor is trying to fetch the client code from the server, which is breaking the app. Is there a way to prevent this behavior?
Even more data points -
My aws code does NOT have android and ios platforms installed. Because of this, I think the cordova plugins are not installed, causing a JS break somewhere.
Easiest fix I can think of is remove cordova autoupdate. This is being added by meteor-platform package. If I clone meteor-platform and comment out the cordova autoupdate, the app doesn't load.
Is there another way of removing autoupdate?
This sounds like you have a different version of your app deployed at the mobile-server address.
The local code is run in development mode. Your AWS one is likely in production mode (and may contain a syntax error).
When you run your app it sees the code is different and fetches the new/old (different) version with a hot code reload - hence the page refresh/flash.
To fix this, you need to find the syntax error in your code. It's best to view the ADB logger or run with meteor run --verbose android-device ....
This will provide a bit more information such as an Uncaught exception: cannot read .. of null error type error.
It's hard to say what the error is. The error prevents the rest of your code from executing. In production mode the entire project is one JS file. If there is an error of any kind half way along the file, the rest of the file will not execute.
Also, try loading <my_aws_ip>:3000 in your browser and watch for JS errors in the JS console.
You can also run it locally with --production to simulate a production build environment locally.
Enabling autoupdate but without a page refresh:
Reload._reload = function (options) {
console.log("Next load will load new version");
};

Way to debug Meteor code? [duplicate]

Does anyone know a good method to debug server side code?
I tried enable Node.js debug then use node-inspector but it does not show any of my code.
I end up using console.log but this is very inefficient.
Update: I found the following procedure works on my Linux machine:
When you run Meteor, it will spawn two processes
process1: /usr/lib/meteor/bin/node /usr/lib/meteor/app/meteor/meteor.js
process2: /usr/lib/meteor/bin/node /home/paul/codes/bbtest_code/bbtest02/.meteor/local/build/main.js --keepalive
You need to send kill -s USR1 on process2
Run node-inspector and you can see your server code
On my first try, I modify the last line on meteor startup script in /usr/lib/meteor/bin/meteor to
exec "$DEV_BUNDLE/bin/node" $NODE_DEBUG "$METEOR" "$#"
and run NODE_DEBUG=--debug meteor on command prompt. This only put --debug flag on process1 so I only see meteor files on node-inspector and could not find my code.
Can someone check this on Windows and Mac machine?
In Meteor 0.5.4 this has become a lot easier:
First run the following commands from the terminal:
npm install -g node-inspector
node-inspector &
export NODE_OPTIONS='--debug-brk'
meteor
And then open http://localhost:8080 in your browser to view the node-inspector console.
Update
Since Meteor 1.0 you can just type
meteor debug
which is essentially a shortcut for the above commands, and then launch node inspector in your browser as mentioned.
Update
In Meteor 1.0.2 a console or shell has been added. It may come in handy to output variables and run commands on the server:
meteor shell
Meteor apps are Node.js apps. When running a Meteor app with the meteor [run] command, you can configure the NODE_OPTIONS environment variable to start node in debug mode.
Examples of NODE_OPTIONS environment variable values:
--debug
--debug=47977 - specify a port
--debug-brk - break on the first statement
--debug-brk=5858 - specify a port and break on the first statement
If you export NODE_OPTIONS=--debug, all meteor command run from the same shell will inherit the environment variable. Alternatively, you can enable debugging just for one run, with NODE_OPTIONS="--debug=47977" meteor.
To debug, run node-inspector in a different shell, then go to http://localhost:8080/debug?port=<the port you specified in NODE_OPTIONS>, regardless of what node-inspector tells you to run.
To start node.js in debug mode, I did it this way:
open /usr/lib/meteor/app/meteor/run.js
before
nodeOptions.push(path.join(options.bundlePath, 'main.js'));
add
nodeOptions.push('--debug');
Here are additional practical steps for your to attach debugger eclipse:
use '--debug-brk' instead of '--debug' here, because it's easier for me to attach node.js using eclipse as debugger.
add 'debugger;' in the code where you want to debug.(I prefer this way personally)
run meteor in console
attach to node.js in eclipse(V8 tools, attach to localhost:5858)
run, wait for debugger to be hit
when you start meteor in your meteor app folder, you'll see that "debugger listening on port 5858" in console.
On Meteor 1.0.3.1 (update to Sergey.Simonchik answer)
Start your server with meteor run --debug-port=<port-number>
Point browser to http://localhost:6222/debug?port=<port-number>
Where <port-number> is a port you specify.
In your code add a debugger; where you want to set your break point.
Depending on where debugger; is invoked, it will either break on your client or server browser window with inspector opened.
I like to set breakpoints via a GUI. This way I don't have to remember to remove any debugging code from my app.
This is how I managed to do it server side for my local meteor app:
meteor debug
start your app this way.
Open Chrome to the address it gives you. You MAY need to install https://github.com/node-inspector/node-inspector (it might come bundled with Meteor now? not sure)
You'll see some weird internal meteor code (not the app code you wrote). Press play to run the code. This code simply starts up your server to listen for connections.
Only after you press play you'll see a new directory in your debugger folder structure called "app". In there are your meteor project files. Set a breakpoint in there one the line you want.
Open the local address of your app. This will run your server side code and you you should be able to hit your breakpoint!
Note: you have to reopen the inspector and go through this process again each time your app restarts!
As of Meteor 1.0.2 probably the best way for server-side debugging is directly via the new built-in shell: with running server run meteor shell. More info here: https://www.meteor.com/blog/2014/12/19/meteor-102-meteor-shell
I am not sure why it was not working for you.
I am able to use it by following steps on console (Mac).
$ ps
$ kill -s USR1 *meteor_node_process_id*
$ node-inspector &
Above steps are mentioned on https://github.com/dannycoates/node-inspector. It is for attaching node-inspector to running node process.
I wrote a small meteor package called meteor-inspector which simplifies the use of node-inspector to debug meteor apps. It internally manages the lifecycle of node-inspector and hence, the user does not need to restart the debugger manually after some files have changed.
For more details and concrete usage instructions take a look at https://github.com/broth-eu/meteor-inspector.
for meteor 1.3.5.2, run
meteor debug --debug-port 5858+n
n is a non-zero number, this will cause node-inspector use 8080+n as web port.
WebStorm, the powerful IDE free for open source developers, makes it much easier to debug server-side.
I've tested it on Windows, and the configuration was painless - see my answer.
A inspector that solve my issues is meteor server console. Here is the process I followed to install it:
In your project folder, add the smart package server-eval:
mrt add server-eval
For Meteor 1.0:
meteor add gandev:server-eval
Restart meteor.
Download crx Chrome extension file from here.
Open extensions page in Chrome and drag crx file to extensions page.
Restart Chrome.
Check the web inspector out to eval server side code:
In comparison with node-inspector, I have a clearer output.
If you prefer to use nodeJS' official debugger you can call NODE_OPTIONS='--debug' meteor and then (on a different shell) node debug localhost:5858.

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