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1. By Bartosz ŁaniewskiApril 05, 2024 • 6 min read • JavaScript, Architecture

   Why you should avoid Barrel Files in JavaScript Modules?

   Barrel files consolidate the exports of multiple modules into a single file. We use them to import a module using a single import statement without…

2. By Bartosz ŁaniewskiJanuary 07, 2024 • 4 min read • Gatsby, SEO

   Ultimate Gatsby SEO Guide: How to structure data for rich snippets?

   Adding structured data can help search engines understand more about your web pages and show better, richer results. Rich snippets enhance the appearance…

3. By Bartosz ŁaniewskiDecember 16, 2023 • 4 min read • Gatsby, SEO

   Ultimate Gatsby SEO Guide: How to generate thumbnails?

   As a software engineer, I love to automate things. I also love to write blog posts. So I decided to automate the process of generating thumbnails for my…

4. By Bartosz ŁaniewskiDecember 15, 2023 • 4 min read • Gatsby, SEO

   Ultimate Gatsby SEO Guide: How to create an SEO component?

   One way to enhance your Gatsby site’s SEO capabilities is by creating a custom SEO component for easy metadata tag management. In this blog post, we’ll…

5. By Bartosz ŁaniewskiDecember 11, 2023 • 5 min read • Gatsby, SEO

   Ultimate Gatsby SEO Guide: How to create a sitemap?

   Creating a sitemap is an essential step towards enhancing the visibility and SEO performance of your Gatsby website. A sitemap assists search engines in…

6. By Bartosz ŁaniewskiNovember 19, 2023 • 4 min read • JavaScript, TypeScript

   API Response validation with Zod

   When implementing applications, we often need to communicate with external services via APIs. In such cases, it’s crucial to ensure that the data received…

7. By Bartosz ŁaniewskiJune 26, 2022 • 9 min read • Case Study, Gamedev, React Native

   Case study: Filler (a React Native game)

   Filler is the first mobile game I ever created with React Native. It started as an experiment to learn more about algorithms, animations, and the platform…

8. By Bartosz ŁaniewskiJune 10, 2022 • 14 min read • Case Study, Gamedev, React Native

   Case study: Tilt Copters (a React Native game)

   Tilt Copters is a relatively simple game created with PixiJS and Expo. This is a project I’ve started to learn more about porting web libraries to React…

9. By Bartosz ŁaniewskiDecember 12, 2021 • 5 min read • CSS, Accessibility

   Accessible CSS that respects the users’ choices

   Most of the designs are rarely built with user preferences in mind, it is the appearance that matters after all! Few people realize the way you respect…

10. By Bartosz ŁaniewskiApril 19, 2019 • 6 min read • React

    Lazy loading and code splitting in React

    Lazy loading is a well-known technique for improving performance and reducing the associated resource costs. It’s so effective that it’s even being added…

11. By Bartosz ŁaniewskiFebruary 28, 2019 • 12 min read • React, Architecture

    Enterprise-scale React & Redux project architecture

    Maintaining large React projects can be a difficult task. Below are a few practices I’ve adapted over the years working with React projects of all scales.…

12. By Bartosz ŁaniewskiJanuary 04, 2019 • 14 min read • Vue, PWA

    Creating offline-first Progressive Web Applications in Vue

    With JavaScript increasingly gaining popularity, Progressive Web Apps (PWAs) might replace native mobile & desktop apps in the future. In this post, we…

13. By Bartosz ŁaniewskiMay 12, 2018 • 3 min read • JavaScript, Flow, npm

    How to export Flow definitions in npm packages?

    More than 240 000 repositories on GitHub use Flow, but only a few export Flow definitions. In this article, I’ll show you how to export Flow definitions…

14. By Bartosz ŁaniewskiApril 28, 2018 • 9 min read • JavaScript, npm

    How to publish a Tree Shaking friendly npm package?

    With the rise of ES2015, modules have officially become an integral part of JavaScript. By their nature, ES2015 modules are static and can be optimized at…

15. By Bartosz Łaniewski and Tao SchreinerMarch 04, 2018 • 14 min read • Blockchain, Cryptocurrency

    Bitcoin – origine et fonctionnement

    Le Bitcoin est l’une des premières cryptomonnaies utilisant un réseau de type paire-à-paire et des systèmes cryptographiques sophistiqués. Elle est…

16. By Bartosz ŁaniewskiFebruary 17, 2018 • 6 min read • Security, Privacy

    Identyfikacja użytkownika na podstawie odcisku przeglądarki

    Odwiedzając strony internetowe, użytkownicy udzielają dostępu do unikalnych, tudzież prywatnych informacji. Te zaś pozwalają na precyzyjną identyfikację…