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https://github.com/opal/opal-node
Coffescript was so cool…
https://github.com/opal/opal-node
Last synced: about 2 months ago
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Coffescript was so cool…
- Host: GitHub
- URL: https://github.com/opal/opal-node
- Owner: opal
- License: mit
- Created: 2012-06-09T15:15:34.000Z (over 12 years ago)
- Default Branch: master
- Last Pushed: 2014-12-20T23:09:19.000Z (over 9 years ago)
- Last Synced: 2024-04-23T20:54:17.763Z (5 months ago)
- Language: JavaScript
- Size: 831 KB
- Stars: 88
- Watchers: 9
- Forks: 8
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: MIT-LICENSE
Awesome Lists containing this project
README
# Opal for Node.js
---
> **WARNING**
>
> This project is currently slightly outdated, the current preferred way to use Opal with Node.js is to compile the app and use node to run the compilation result.
>
> A `nodejs` file is now available directly [in the stdlib](https://github.com/opal/opal/blob/master/stdlib/nodejs.rb) and Node.js is also the default runner for the CLI (see `opal --help` for a list of alternative runners). An example of this can be found in [the `mspec_node` rake task](https://github.com/opal/opal/blob/master/Rakefile#L62-L63).
---
[](http://travis-ci.org/elia/opal-node)
Use Ruby on Node.js for **REAL-WORLD rofl-SCALING**
> Use Node.js FOR SPEED
>
> — [@RoflscaleTips](https://twitter.com/RoflscaleTips/status/57551756657303552)
> [@hipsterhacker](https://twitter.com/hipsterhacker) I approve of your choices of roflscale technologies, particularly Node. Your roflmillions of users will appreciate it.
>
> — [@RoflscaleTips](https://twitter.com/RoflscaleTips/status/50320781162446848)
> mongodb should be ported to nodejs for improved scalability
>
> — [@RoflscaleTips](https://twitter.com/RoflscaleTips/status/190291005138939904)
## Usage
Run with `opal-node app.rb`
or run the repl: `opal-node-irb`
### Installing
Install with NPM: `npm install -g opal`
or via RVM: `rvm install opal`
## Example ([rack](http://rack.github.io))
```ruby
# app.rb
require 'http/server'
HTTP::Server.start 3000 do
[200, {'Content-Type' => 'text/plain'}, ["Hello World!\n"]]
end
```
This is the original Node.js example:
```js
// the original nodejs example
http = require('http')
var port = process.env.port || 1337;
http.createServer(function(req, res) {
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.end('Hello World\n');
}).listen(port);
```
Here's the (naïve) rack-like implementation of `http/server.rb`
```ruby
# http/server.rb
module HTTP
`_http = require('http')`
class Server < `_http.Server`
alias_native :listen, :listen
def self.start port, &block
server = new `function(request, response) {
request.on('end', function(chunk) {
var rackResponse = #{ block.call(`request`, `response`) };
response.writeHead(rackResponse[0], #{ `rackResponse[1]`.to_native });
response.end( rackResponse[2].join(' ') );
})
}`
server.listen(port)
server
end
end
end
```
### Example 2 ([express.js](http://expressjs.com) wrapper)
A simple Express.js wrapper example can be found in [`examples/express-wrapper.rb`](https://github.com/opal/opal-node/blob/master/examples/express-wrapper.rb)
```ruby
Express.new do
get '/' do |req, res|
res.send 200, 'hulla!'
end
end.listen 3000
```
## Developing
Start a coffee watcher to keep opal.js in sync with opal.coffee
coffee -cwo lib/ lib/*.coffee
### Running in development
NODE_PATH="$NODE_PATH:../lib/" node ./bin/opal-node
NODE_PATH="$NODE_PATH:../lib/" node ./bin/opal-node-irb
## Testing
To keep the specs running while developing just install and use [spectator](https://github.com/elia/spectator#readme)
that will compile `opal.coffee` to `opal.js` before every run of the spec.
$ gem install spectator
$ gem install notify # to get notification
$ spectator
--- Waiting for changes...
## License
This project rocks and uses MIT-LICENSE.