@jan_grz Blog

Jest has great built-ins for mocking, but mocking properly is quite tricky 😅. I wanted to write unit tests that work without performing…

Syncrow is a cross platform Node.js library for real time directory synchronization over tcp sockets. It can be used both as a node_module…

Async lets you build sophisticated flows, it has great capabilities for retries and timeouts, and even wonders like async.queue or async…

3 simple tips to improve your Javascript experience A powerful IDE is a great tool, it can boost your productivity, and provide useful…

I first heard about Aaron Swartz when it was already too late. I was really impressed with his hacking skills and achievements, which I…

Apple always triggers passionate discussions between technology fans. Let’s face it: It is easy to hate the mac. It is easy to love the mac…

…luckily! Today he is one of the most influential Polish creatives. He dropped out of architecture school and committed himself to animation…

Say hello to new friends let & const ES6 among other very useful features, introduced block-scoped delcarations. A block is basically a…

An overlooked gem for makers, engineers and dreamers