Personal collection of articles to study

Updated at January 3, 2026

Blog posts

Studies

Collection of articles

Articles for study and learning. Publications I came across through newsletters that I read and recommend. Blog posts since 2020.

Format of the articles:

mm/dd/yyyy (The day that I’ve read the article):

A link with Date that the post was made - Title of the article

Brief description of what is written in the article;

Self Learn
JavaScript
Tutorials
Open Source
Tools
React
Front End
Blogs/Docs
Accessibility
Interview

Self Learn

12/21/2020:

Stop Memorizing!: The #1 Advice I Wish Someone Would Have Told Me:

Focus on learning problems-solving skills and practice algorithms and data structures;
Do not fear google + copy and paste and learn to use keywords to find what you are looking for faster;
Make your studying notes easy to go back when needed.

07/21/2024:

May 01, 2024, You need to understand the business to design a good engineering strategy

How to understand where you work to make decisions.

JavaScript

12/22/2020:

JavaScript Cheatsheets Series’ Articles:

JS Array Cheatsheet -> length; concat; join; slice; indexOf; lastIndexOf; map; sort; reverse; forEach; every; some; filter; shift; unshift; pop; push; splice;
JS Math Cheatsheet -> abs; round; ceil; floor; max; min; pow; random; sqrt.

01/07/2020:

Fastest Way of Passing State to JavaScript, Re-visited

How and why parsing objects with <script type="mime/invalid"> can be faster than plain parse and JSON.parse

11/30/2024:

Sep 20, 2024 - JavaScript Generators Explained, But On A Senior-Level

Import JavaScript files from a script tag;
Import libraries from CDNs;
Installing external libraries locally;
More about managing dependencies and other libraries/tools that might break.

01/19/2024:

Nov 27, 2024 - Writing Modern JavaScript without a Bundler

Streams - push and pull;
Lazy and eager evaluation;
Generators and its use cases.

Tutorials

Introduction to Videogames and Emulators:

9 Consoles Generations;
Understanding Emulators;
16 to 32-bits and Assembly to C;
GPUs.

Open Source

12/25/2020:

Don’t be scared, get started with Open Source as soon as possible

Cool open source projects such as -> Kubernetes, TensorFlow and others;
Helpful links to start contributing with OS projects.

Tools

12/28/2020:

Tools and Resources Series’ Articles:

Tools and resources to help developers;
Twitter threads to help find jobs.

React

11/26/2023:

Building a drawer component - Emil Kowalski

Development of BottomSheet component on top of Radix.

12/09/2023:

Sep 15, 2023 - How to create a React components ESM+CJS library

How to create a component lib using typescript, react, and rollup. Builds for cjs, mjs, iife and umd.

01/14/2024:

Nov, 2023 - Solid Principles in React / React Native

How to use SOLID with React Native examples.

01/14/2024:

Jan, 2024 - React Tricks: Fast, Fit and Fun

Good ways to use React.cloneElement - Component composition;
Good examples of how react re-renders and ways to avoid it;
Uses for React.useState initializer function;
useEvent hook, similar to React.useCallback but stables the callback;
Uses for React.useSyncExternalStore, subscribing to external state.

07/20/2024:

May 17, 2020 - A (Mostly) Complete Guide to React Rendering Behavior

Details of how React renders;
Rules of React render;
Reconciliation;
Async render, Closures;
Performance;
Context.

08/01/2024:

Jul 23, 2024 - How Airbnb Smoothly Upgrades React

Upgrading react 16 to 18;
Challenges doing it;
Their system to migrate;
How they test it;
How they manage to make progressive releases.

01/01/2025:

Aug 21, 2024 - Example of Using useSyncExternalStore with LocalStorage

Example of how to synchronize a state between tabs.

01/05/2025:

Dec 2, 2024 - How To Improve INP: React

Examples of INP improvements on React apps, mainly with React 18 features:
Concurrent React (startTransition, Suspense);
Event handling;
Abortable transitions;
Portals.

01/03/2026:

March 10, 2025 - How to Optimize Next.js Performance: An In-depth Guide

Static vs server-side rendering and when to use each;
Using revalidation with static pages for periodic content refresh;
Improving perceived performance with React Suspense and streaming;
Dynamic loading with next/dynamic for code splitting;
Image optimization using next/image component with quality settings;
Optimizing third-party scripts with next/script;
Bundle size analysis and monitoring performance bottlenecks.

Front End

12/01/2023:

Nov 5, 2023 - Building modern Web Applications: 5 Essential Frontend Architecture Principles

Principle 1: Async or defer load, consider the critical path;
Principle 2: Tree-shake, consciously bundle and eliminate dead code;
Principle 3: Define and respect a performance budget;
Principle 4: Stick to the web platform APIs and web standards;
Principle 5: Use new generation frontend frameworks.

12/02/2023:

Nov 22, 2023 - An Interactive Guide to CSS Grid

Teaches everything about CSS grid with embed code examples.

12/06/2023:

Oct 24, 2023 - From Idea to Design for Non-Designers

Goals;
Inspiration;
Layout;
Colors;
Typography;
Buttons;
Links;
Putting It All Together.

04/26/2024:

Mar 15, 2023 - 6 CSS snippets every front-end developer should know in 2023

A container query;
Scroll snap;
Grid pile;
Quick circle;
Control variants with @layer;
Memorize less and reach more with logical properties.

04/26/2024:

Oct 24, 2023 - 5 CSS snippets every front-end developer should know in 2024

CSS:has(.potential-beyond-being-a-parent-selector);
Create a subgrid;
Nest the CSS way;
Let the browser balance headlines;
Use container query units.

05/10/2024:

Jan 21, 2024 - What is CSS Motion Path?

How to elements with css using path;
Animating svg paths;
Animating texts along a path;
Animating and moving an icon based on scroll.

07/07/2024:

November 21, 2023 - The Perfect Theme Switch Component

Simple way to change themes with minimal js.

07/07/2024:

January 17, 2024 - A Practical Introduction to Scroll-Driven Animations with CSS scroll() and view()

Lots of examples;
How to use scroll and animation css props;
Creating an carousel with minimal js.

07/16/2024:

February 21, 2024 - View transitions: Handling aspect ratio changes

Animating text with view transitions.

07/20/2024:

May 2, 2024 - Combining CSS :has() And HTML `select` For Greater Conditional Styling

Uses of :has on forms;
Example for required select;
Example for entire page font size changes;
Example for a theme picker.

07/25/2024:

Jul 16, 2024 - Understanding SSR with Hydration: Pros, Cons, and Scenarios for Software Architects

Explaining hydration;
Shows use cases and project examples.

07/28/2024:

July 16, 2024 - How to make complex Chrome extensions: a zero gravity guide

How playbook developed their extension (chrome);
Implementing auth, reading cookies;
Interactive with web page;
Publishing it.

08/04/2024:

Aug 21, 2023 - Patterns for Reactivity with Modern Vanilla JavaScript

PubSub Pattern (Publish Subscriber);
Observer Pattern (Proxies, Signals, and others);
Reactive Rendering of UI (String literals, MutationObserver, Web Components, Animations and Reactive css).

08/04/2024:

Jul 29, 2024 - Patterns for Memory Efficient DOM Manipulation with Modern Vanilla JavaScript

Tips for More Efficient DOM Manipulation (Hiding/Showing over creating/deleting elements, textContent over innerText, insertAdjacentHTML over innerHTML);
Examples of these approaches;
Associating data to DOM with WeakMap to avoid memory leak (data garbage collected if the element is removed);
Event delegation;
AbortController API to remove multiple events;
Profiling and Debugging.

08/04/2024:

Jul 25, 2024 - The User Location is a Lie

Ways to get user location;
What not to do (i.e asking for location right when the content loads);
Examples and strategies for some scenarios (Translation, Weather, etc).

10/23/2024:

Jul 30, 2024 - Frontend Security Checklist

Practical (React/Express) examples of how to secure frontend applications;
XRSS: Sanitizing user input;
CSP: Content Security Policy - Headers;
CSRF: Using tokens generated by the server;
IDOR: Insecure Direct Object Reference - Checking permissions on the server;
Environment variables: Avoid hardcoding secrets.

03/07/2024:

Nov 29, 2024 - If Not React, Then What?

The Rule Of Least Client-Side Complexity;
Know your user before choosing how to render and deliver content;
Examples of type of applications and how to choose a rendering strategy;
Refuting common arguments in favour of React;
Also speaks a lot about common misconceptions about choosing React.

06/19/2025:

Dec 31, 2024 - Breaking Up with Long Tasks or: how I learned to group loops and wield the yield

How to break up synchronous array processing into smaller chunks to prevent long tasks;
Comparison between forEach, map, for..of loops and their async behavior;
Yielding strategies using scheduler.yield() vs setTimeout();
Batching techniques to optimize performance and responsiveness;
Balancing total processing time vs frame rate for smooth user experience.

11/20/2025:

How 73% of Your E-Commerce Visitors Could Be Fake

Understanding bot traffic and fake visitors in e-commerce websites;
Impact of fraudulent traffic on analytics and business decisions;
Detection methods and strategies to identify non-human visitors.

Blog/Docs

Webkit newest blog posts

Useful to keep up with safari updates;
Blog posts very well written with lots of details and explanations;
Safari features, Announcements, etc.

Accessibility

02/03/2024:

Dec 7, 2020 - aria-label, aria-labelledby, and aria-describedby: What’s the Difference?

How to use accessibility attributes, with practical examples.

Apr 13, 2017 - Content Structure

Web pages content structure: Articles, Sections, Lists, Quotes and Tables.

Oct 19, 2021 - Alternative Text

Useful practical examples of how to use alt texts.

Dec 21, 2023 - The Top Accessibility Errors Found in 2023

Some of the most common accessibility errors found in 2023;
How to fix them.

06/23/2025:

Jan 7, 2025 - Automated Accessibility Testing at Slack

How Slack implemented automated accessibility testing using Axe with Playwright;
Challenges with integrating into Jest and React Testing Library;
Custom solutions for filtering violations, managing duplicates, and reporting;
Workflow setup for developers including environment flags and CI integration;
Triage process and collaboration with internal accessibility teams.

06/24/2025: