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POHow can I define an AngularJS service using a TypeScript class that doesn't pollute the global scope?
 

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  1. POHow can I define an AngularJS service using a TypeScript class that doesn't pollute the global scope?
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    <p>I am using AngularJS and TypeScript. I want to implement an AngularJS service using a Typescript class, like this:</p> <pre><code>class HelloService { public getWelcomeMessage():String { return "Hello"; } } angular.module('app.services.helloService', []).factory('helloService', () =&gt; { return new HelloService(); }); </code></pre> <p>This compiles to the following javascript code:</p> <pre><code>var HelloService = (function () { function HelloService() { } HelloService.prototype.getWelcomeMessage = function () { return "Hello"; }; return HelloService; })(); angular.module('app.services.helloService', []).factory('helloService', function () { return new HelloService(); }); </code></pre> <p>This pollutes the global namespace with the variable HelloService, which I obviously don't want. (Using Chrome's console I verified that HelloService was an object.) How can I solve/avoid this problem?</p> <p>I tried the obvious:</p> <pre><code>angular.module('app.services.helloService', []).factory('helloService', function () { class HelloService { ...} return new HelloService(); }); </code></pre> <p>but that gives me a compile error ("Unexpected token; 'statement' expected.").</p> <p>One possible solution I can think of is using TypeScript's import and export somehow, which in turn will use RequireJS. This probably will wrap the HelloService within a define function, thus avoiding pollution of the global scope with HelloService. However, I don't want to use RequireJS in my AngularJS application for now, as I think AngularJS is good enough for my use, and it adds complexity.</p> <p>So, my question is, how can I define an AngularJS service using a TypeScript class that doesn't pollute the global scope?</p>
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      1. POHow can I define an AngularJS service using a TypeScript class that doesn't pollute the global scope?
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      1. POHow can I define an AngularJS service using a TypeScript class that doesn't pollute the global scope?
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