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63 lines
3.4 KiB
Markdown
63 lines
3.4 KiB
Markdown
7 months ago
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# package.js
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[](https://travis-ci.org/s-a/package.js)
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[](https://coveralls.io/r/s-a/package.js)
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[](https://www.codacy.com/app/stephanahlf/package-js)
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[](https://www.npmjs.org/package/package.js)
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[](https://www.npmjs.org/package/package.js)
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[](https://www.npmjs.org/package/package.js)
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[](https://www.npmjs.org/package/package.js)
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[](http://s-a.github.io/donate/)
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## Open your node apps for plugin developers
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package.js scans the given ```packageDirectories``` for your installed application packages and creates an instance by ```require```ing the main JavasScript file if a ```package.json``` file was found which contains expected package identifier(s). In the example case let us say ```{pandaPackage : true}```.
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package.js will pass the ```packageContstructorSettings``` to the ```new``` ```require```d node module.
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This implements an easy way to distribute packages akka addons or plugins for node applications via [NPM](https://npmjs.com) or other package distribution networks.
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## Installation
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```shell
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npm install package.js --save;
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```
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## Example usage
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```javascript
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var path = require('path');
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var events = require('events');
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var packageController = require("package.js");
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var CustomApp = function () {
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this.events = new events.EventEmitter();
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return this;
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};
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var customApp = new CustomApp();
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packageController.autoload({
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debug: true,
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identify: function() {
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return (this.meta.pandaPackage === true);
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},
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directories: [path.join(__dirname, "node_modules")],
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packageContstructorSettings: {app:customApp}
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});
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```
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To identify all application packages the method ```autoload``` expects a custom method called ```identify``` which is an event and will be executed for each package with the context of the package itself. So far you have access there to the following properties:
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- ```this.dir``` - The package directory.
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- ```this.meta``` - The package meta data fetched from its ```package.json```.
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A package is marked as identified if ```identify()``` returns ```true (boolean)```.
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A detailed demo of usage can be found in the [library tests](/test/main.js).
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## Application Packages
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Application packages are regular [NPM modules](https://docs.npmjs.com/getting-started/creating-node-modules) and must contain a file called [```package.json```](https://docs.npmjs.com/files/package.json) which is normaly used by [NPM](https://npmjs.com) but maybe with an extra field to identify your application plugins. Here is a very simple hello world [example package](/test-packages/package-1/)
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## [Contributing](/CONTRIBUTING.md)
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## [License](/LICENSE.md)
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Copyright (c) 2015 Stephan Ahlf <stephan.ahlf@gmail.com>
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This software is dual licensed under MIT and GNU GENERAL PUBLIC LICENSE Version 3.
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[<img src="https://s-a.github.io/license/img/mit.svg" />](/LICENSE.md#mit "Massachusetts Institute of Technology (MIT)")
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[<img src="https://s-a.github.io/license/img/gpl-3.0.svg" />](/LICENSE.md#gpl-30 "GNU GENERAL PUBLIC LICENSE Version 3")
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