Latest on inDepthDev

In JavaScript we often use entities, such as window or navigator. Some of these objects have been there forever. But you might have seen DOCUMENT token used in Angular. Let's discuss why it exists and what we can learn from it to make our apps cleaner and more flexible.

I want to show how we organized the system of settings for all textfields in Taiga UI with this concept and the power of Dependency Injection in Angular.

Learn about ng-content, ng-template, ContentChild and structural directives to build Angular material "mat-tree". These are badly documented but powerful and advanced concepts available in Angular.

It is time to explore some practices and patterns the community has recognized as harmful or complicated. So let's start with a list of what not to do in NGRX

We are migrating a traditional server-side website to angular step by step. I want to share some experiences of what we have tried in this article.

Animations are good, but it can be overwhelming sometimes. As developers, we need to allow users to take control of animations. In this article we will learn how we can utilize reduced motion media query to disable angular animations.

NgZone notifies Angular when to perform the change detection process (e.g. a DOM event with bound listener is one of the triggerers). However, if in response to an event you directly manipulate the DOM or simply perform an action which does not require bindings update, the process is redundant.

I keep telling people that Angular is way more powerful than what youtube teaches. Learning design patterns will help to create powerful components. Let's learn to create an Angular component, iterate over it to make it reusable, scalable, and powerful.

This article will give you a step by step walkthrough on implementing a realtime database in your Angular Apps using Firebase Cloud Firestore.

Have you ever realized that you often repeat the same patterns across multiple files? Creating schematics that override well-known Angular schematics, designing them based on project needs will enhance your development and reduce time spent on generating files.

Angular Universal is an open-source project that extends the functionality of @angular/platform-server. The project makes server-side rendering possible in Angular. This article will discuss the issues and possible solutions we encountered while developing a real application with Angular Universal.

As a web developer you may have noticed a repetitive boiler plate code of displaying a loader while an asynchronous request is being processed, then switching to the main view or displaying an error. Personally, I noticed these repetitions both in my code and other developers I work with. And even worse than the repetitive code is the fact that there are no indications for missing state views (such as unhandled errors or a missing loader). <div *ngIf="data$ | async as data"> <ng-container *ng

It's not uncommon to see the words 'unsubscribe', 'memory leaks', 'subject' in the same phrase when reading upon RxJS-related materials. In this article, we're going to tackle this fact and by the end of it you should gain a better insight as to why memory leaks occur.

When building a client application, some requests to the server are identical regardless of the specific view the user is in. A cache eliminates redundant HTTP calls and may also help reduce the number of potential future HTTP calls if it implements some additional logic.

We cannot use HostBinding with Observable data — it requires a plain value. This is a pretty sought-after feature. Let’s see how we can implement it while we wait for official support.

In this article we will learn about two ways to implement reactive and reusable forms that have the capability to be used as sub-forms and also be used as standalone forms.

If you see a project ridden with problems and bad practices, it might be tempting to start refactoring right away. But it is important to clear up several issues before getting to work.

Undoubtedly, it’s a wide array of operators that makes the RxJS library extremely powerful utility in a developer’s tool belt. In this blog post, I will introduce you to the concept of custom RxJS operators and present exemplary implementations.

A headless component is one that provides behavior to its children, and allows the children to decide the actual UI to render while incorporating the behavior provided by the parent. In this article, we explore an example of a headless component, and the problems they help us solve.

Learn how to build extensible applications with Angular and reuse your code and abilities to build apps for any deployment target - web, mobile web, iOS, Android, macOS, Windows and Linux.

Explanation in detail about how map and pluck work, and then figuring out main difference between two operators

In my previous two articles we have discussed how to change our components which solve problems in imperative ways to do that in functional, reactive, RxJS way, and we of course had a lot of fun doing that.

In software engineering, making things work the first time is always easy. But, what if you want to add new functionalities to an existing code? Making iterations on an existing basis can be difficult to do without introducing bugs. This is where SOLID principles come into play.

Just before new year we announced our new Angular UI kit library Taiga UI. If you go through Getting started steps, you will see that you need to wrap your app with the tui-root component. Let's see what it does and explore what portals are and how and why we use them.

We are happy to announce that we published our big Angular component library into open source! In this article I want to write about concepts and practices that we build our library with

The American poet Edward Estlin Cummings was famous for his eccentric use of spacing and capitalization, to the point that his name is usually styled as e e cummings. I wonder what he would think of an RxJS question that a friend asked me: “Is returning throwError the same as writing ‘throw error’?”

Imagine we need to create reusable context help component that can be easily added as an attribute to any DOM element.

In this tutorial, I will explain how to manage your component’s state with @ngrx/component-store. You will do it in a more organised way and minimise bugs and UI inconsistencies.

Angular uses TypeScript because TypeScript provides us with the tooling to create more robust applications. I'm talking about tools for type safety. But tons of developers aren't using the provided tools. They just create applications as they did 10 years ago using JavaScript.

Exploring partial hydration by building static site generator with React

Most static site generators are complete overkill for simple blogs. This article explores how you can build your own generator using htm library in just 20 lines of code.

We explore how a small adjustment can guarantee Good Action Hygiene, lead to extensible reducers and lower the high code-cost of NgRx.

Follow me in this play-by-play guide and let's integrate Jest within your Angular project!

In this article we demonstrate how to use ngTemplateOutlet, along with ngTemplateOutletContext, to make a component completely customisable.

We can use action and data streams declaratively to react to user actions. Leveraging the power of RxJs operators we can transform our data and allow our template to subscribe to the Observable using the Async pipe.

In this article, we will learn how to create a directive in Angular that will allow us to freely drag any element, without using any 3rd party libraries.

Rendering Components with component selector name along with lazy module loading. The approach that works with Angular Ivy & AOT compilation.

Learn Gitlab to build a CI/CD pipeline for Angular apps and libraries. This first article introduces Gitlab pipelines. At the end, you'll get a pipeline fetching project dependencies and running build and tests. It comes with many optimizations and reports integration in merge requests.

At inDepth we strongly believe that writing technical articles is one of the most effective ways to learn a topic at a deeper level. Investing your time and effort into acquiring valuable knowledge and sharing it with peers is the most rewarding path to professional growth.

Angular 11 is released, and it was focused on improving the type safety of APIs and fixing the issues. Let's go through the changes introduced in this version.

The journey from SASS based theming to CSS3 variables for Angular app and its libraries.

Visual regression testing is a robust technic that improves our suite of tests, by literarily taking a screenshot of an element, component, or page in a determined state and then use it to compare the latest state of that element.

Introduced in 2015 with ECMAScript6, template literals let us dynamically construct strings of text and embedded expressions, even multi-line strings of text, in a more elegant way than concatenation.

Here I will walk you through a step-by-step guide on how to lazy load the common styles specific to a feature module.

Ever since mobile devices became capable of accessing the web, it became obvious that not all web pages are usable on a small screen. Today most websites implement responsive design, but often at a cost of extra DOM. This post will show you how to solve that last step in Angular.