Build a secure Angular client using ASP.NET Core and OAuth

What is the resource owner password credentials grant? How can I secure my Angular client using OAuth and JWT bearer tokens? In this post I will focus on the resource owner password credentials grant, a different kind of credential flow supported by the OAuth protocol, and how it can be used to secure certain resources on an Angular application. Similarly to previous post, I will create the authorization server from scratch, then the resource server, a simple ASP.NET Core RESTful API, and finally the Angular 6 application, with all the bits and pieces required to prevent unauthorized access.

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ES6 generators and async/await in Typescript

Some exciting features Javascript has developed during the latest versions (ES6, ES2016) are without doubt the generator functions and the async/await support.

These features exist in Typescript for quite some time; the language supported async/await since 1.7 version. But what about them? What they really are and how they work?
In this post I am going to explore their world, their Typescript syntax and implementations.

Continue reading integration tests with chai and mocha

All the goodies that you are building need to be of highest quality. But how is quality possible when no tests are in place?

If you have followed along, this very website promotes test driven development, very passionately if you ask me. I want my code to be thoroughly tested, I want confidence, I want speed. Remember, test driven development is the practice that makes you agile, in terms of speedy development and ability to cope with the code’s evolution. You go faster when you write tests.

That is no different when we code real time applications, in this particular instance, with, which heavily relies on an event driven style. We need to make sure that our channels, our business rules and the wiring work properly and that is exactly the story that I am going to tell you, so let’s dive in.

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Migrating from typings to npm @types

Typescript definitions. What a confusing topic. Prior to Typescript 2.0 we were using tools like typings to manage and install them. After 2.0 we moved to npm@types, but what does that really mean? And how can we migrate an existing project that uses typings? What about custom type definitions?

In this post I will show you how to migrate to newest @types, answering all these questions.
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