On the way to TypeScript
Avoid the bugs with TypeScript and read about the pros and cons of type systems as well as migration strategies. Researched, experienced, and shared.
Compile-time functional programming in TypeScript
You probably know that TypeScript is a language. But did you know that TypeScript is a language? Meaning, not the JavaScript that it transpiles to, but its actual type system? Check this out: This is TypeScript calculating Fibonacci numbers at compile-time. No JavaScript, no running the code, just the type system alone. So, how does […]
How to write custom ESLint rules
Hello there! My name is Daria, and today we’re going to look into how to write custom ESLint rules. I’ll walk you through writing a rule step by step so that by the end of the guide you’ll be confident enough to create your own rules. For writing custom ESLint rules, you will need to: […]
Bookmarklets: Automate boring web tasks
What’s your first thought when you think about automating some boring and repetitive web task? Every time I’ve thought about this, my first thought has been: "I can write an extension for it". But did you know that creating an extension is not the only way? You can also create and use bookmarklets. With them, […]
Guest journey: Get ready for zoomers
The way in which technical solutions are perceived is moving fast forward with every new generation. What my generation (millennials) see as a huge technical leap, the next will see as a standard, and the one after that as a deprecated technology. Out with the old, in with the new In the hospitality sector, tech […]
Frontend Performance Monitoring with New Relic
Performance is always an important thing to think about when developing an application. It has a great impact on user satisfaction—the faster the code, the smoother the experience. But, as we all know, not all code is written perfectly from the start, and even small inefficiencies pile up over time. So, once this happens and […]
Adopting accessibility: this is how we do it
Adopting accessibility in a product can be quite an overwhelming task. There are a lot of different sources out there on the topic. We did some internal research to come up with action points we could put on roadmap, and now we want to share it publicly. This might be useful in case you have […]
TechUncovered: Frontend
The fifth part of the TechUncovered series is here! This time on the topic of frontend, with the subtitle development of really big applications. The moderator and guide of the debate will again be Jirka Bachel and this time will be interviewed by representatives of Mews, Alza and Socialbakers, Czech companies that already have something […]
Custom Neural Networks in a Browser
Neural Networks can do a lot of things. Personally, the way they find patterns in a set of complex data always felt like magic to me, even after I started understanding how they work. They have a lot of potential uses and being able to run them in a browser opens a lot more doors. […]
Intro to Graph Databases: More than just GraphQL
Nowadays, you’ll see GraphQL used in a lot of production and high load projects—and for good reason. The technology provides a simple and elegant method of implementing to APIs. I’m sure there are a lot articles giving a great overview of GraphQL APIs and comparing them to REST/SOAP and/or RPC (continue the list with your […]
Delivering payment requests: one of our killer features
In this article, I would like to reveal how software development works at MEWS. The development team is product-oriented, meaning that we focus on a single product and do not build applications on demand. We provide multiple applications for hoteliers and other providers whose services can be booked for certain time periods. I will use […]
How to get your cross-references in redux straight
Here at Mews, we have, as any other diligent react/redux developers, followed the redux documentation’s recommendations on shaping the redux store. Thus, our state ended up being (somewhat) shaped in such a manner that it references data from one (sub)state to another. While the documentation has good reasoning behind this structure, we were left to […]
Anatomy of Failure or: How to Deploy the Same Bug Four Times
Setting the scene, meeting the players All frontend code produced by Mews is being continuously integrated and delivered via automated build steps powered by custom build Azure Pipeline workflows. The deployment process begins with a pull request merge into the master branch. Pipeline runs the usual build steps, code analysis, and tests, then emits source […]
Classic cliché: computer nerds. If you thought they were extinct, think again….
For the first time in the short history of the Meet MewsDevs interview series, I decided it would be a good idea to interview two people at once. Alexander (frontend dev) and Vaclav (backend dev) have a lot in common. They both study at Charles University Faculty of Mathematics and Physics (Matfyz), live in the […]
Meet the MewsDevs – Daria
The second edition of Meet the MewsDevs is here! After Backend dev (and DOTA lover) Jarda, it’s time for Daria and the story of one Russian’s struggle to buy sunflower seeds in Prague and going from chemical engineer to Frontend developer at Mews. Hey, Daria, you’ve been with us for about 2 years, right? No, […]
Taming Redux state at scale
Everyone familiar with the Redux state management library is probably also familiar with its basic example of a todo list application. While this example illustrates some of the strengths and patterns associated with Redux quite nicely, it’s a bit overwhelming for such a simple use-case. It makes you wonder… how does Redux scale for big […]
Path to Continuous Deployment
As our company and (especially) tech teams grow, our need for better deployment processes increases too. We started with tedious, manual tasks and through a process of continuous improvement over the course of the past 6 years, reached full automation. Watch the talk I gave at ReactiveConf about how we have achieved it: You can […]
