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Added dependency injection example
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‎dependencyInjection/ru/simple/README.md

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## Описание
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`framework.js` - небольшая часть фреймворка, необходимая для демонстрации DI
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`application.js` - компонент приложения, с которого начинается запуск кода
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внутри фреймворка, он зависит от `component2.js`, `component3.js` и от
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библиотек npm: "mkdirp" и "ncp", от глобального API `console` и глобальных
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функций работы с таймерами: `setTimeout` и `setInterval`
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`component1.js` - модуль, который зависит от библиотек ядра ноды "console" и
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"util" и от библиотеки "colors" из репозитория npm
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`component2.js` - модуль, который зависит от "util", "path" и от `component1.js`
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`component3.js` - модуль, который не имеет внешних зависимостей
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## Запуск
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До запуска нужно установить зависимости, они описаны в `package.json`,
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а установить их можно из командной строки набрав `npm install`.
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Из командной строки можно набрать `node ./framework.js` или `node framework`.
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## Задания
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‎dependencyInjection/ru/simple/application.js

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var application = {};
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module.exports = application;
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application.main = function() {
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console.log('Application entry point');
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};

‎dependencyInjection/ru/simple/application.json

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{
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"description": "Example: Application with dependencies",
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"version": "1.0.0",
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"author": "Timur Shemsedinov",
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"api": [
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"component2",
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"component3",
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"mkdirp",
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"ncp",
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"console",
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"setTimeout",
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"setInterval"
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]
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}

‎dependencyInjection/ru/simple/component1.js

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var moduleName = {};
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module.exports = moduleName;
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var privateProperty = 'Privat variable value in Module1';
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var privateFunction = function() {
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console.log('Output from private function of Module1');
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};
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function localFunction() {
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console.log('Output from local function of Module1');
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};
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moduleName.publicProperty = 'Public property value in Module1';
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moduleName.publicFunction = function() {
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console.log('Output from public function of Module1');
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};

‎dependencyInjection/ru/simple/component1.json

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{
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"description": "Example: Module1",
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"version": "1.0.0",
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"author": "Timur Shemsedinov",
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"api": [
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"console",
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"util",
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"colors"
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]
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}

‎dependencyInjection/ru/simple/component2.js

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var moduleName = {};
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module.exports = moduleName;
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var privateProperty = 'Privat variable value in Module2';
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var privateFunction = function() {
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console.log('Output from private function of Module2');
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};
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function localFunction() {
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console.log('Output from local function of Module2');
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};
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moduleName.publicProperty = 'Public property value in Module2';
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moduleName.publicFunction = function() {
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console.log('Output from public function of Module2');
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};

‎dependencyInjection/ru/simple/component2.json

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{
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"description": "Example: Module2",
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"version": "1.0.0",
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"author": "Timur Shemsedinov",
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"api": [
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"util",
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"path",
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"component1"
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]
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}

‎dependencyInjection/ru/simple/component3.json

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{
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"description": "Example: Module3",
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"version": "1.0.0",
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"author": "Timur Shemsedinov"
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}

‎dependencyInjection/ru/simple/framework.js

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// Типы библиотек
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var libraries = {
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console: 'global',
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setTimeout: 'global',
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setInterval: 'global',
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fs: 'native',
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vm: 'native',
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path: 'native',
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util: 'native',
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ncp: 'module',
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colors: 'module',
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mkdirp: 'module',
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};
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// Ссылки на метаданные загруженных библиотек
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var loaded = {};
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// Ссылки на загруженные библиотеки
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var api = {};
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// Загружаем два системных модуля и после них основное приложение
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['fs', 'vm', 'application'].forEach(loadLibrary);
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// Функция загрузчик
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function loadLibrary(name, parent) {
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if (typeof(parent) !== 'object') parent = { name: 'framework' };
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console.log('Loading dependency: ' + name + ' into ' + parent.name);
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var mod = {};
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loaded[name] = mod;
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mod.name = name;
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mod.type = libraries[name];
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if (mod.type === 'global') {
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mod.interface = global[name];
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api[name] = mod.interface;
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} else if (mod.type === 'native' || mod.type === 'module') {
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mod.interface = require(name);
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api[name] = mod.interface;
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} else {
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mod.type = 'app';
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mod.context = { module: {} };
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mod.context.global = mod.context;
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mod.sandbox = api.vm.createContext(mod.context);
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mod.config = require('./' + name + '.json');
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mod.fileName = './' + name + '.js';
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api.fs.readFile(mod.fileName, function(err, src) {
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mod.script = api.vm.createScript(src, mod.fileName);
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mod.script.runInNewContext(mod.sandbox);
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mod.interface = mod.sandbox.exports;
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api[name] = mod.interface;
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if (mod.config.api) {
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mod.config.api.forEach(function(item) {
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loadLibrary(item, mod);
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});
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}
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});
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}
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}

‎dependencyInjection/ru/simple/package.json

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{
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"name": "diExample",
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"version": "1.0.0",
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"private": true,
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"author": "Timur Shemsedinov <timur.shemsedinov@gmail.com>",
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"description": "Dependency Injection Example for Node.js",
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"main": "./framework.js",
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"dependencies": {
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"colors": "1.1.x",
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"mkdirp": "0.5.x",
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"ncp": "2.0.x"
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},
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"engines": {
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"node": ">=5"
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},
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"readmeFilename": "README.md"
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}

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