This is part III of the “Manipulating video in a browser” series. In the previous articles, we experimented with the new “Insertable Streams for MediaStreamTrack” API to modify the web cam’s video stream before sending it further — to the WebRTC module, for example. The first attempt used JavaScript to…

The previous article of this series discussed the possibility of modifying video streams in a browser. The new “Insertable Streams for MediaStreamTrack API” makes it possible, by allowing the web-application to modify the frames before the stream is sent further. …

Have you ever wanted to modify the video streaming from your webcam? Now it’s possible! A new browser API recently landed in the webkit based browsers, it’s called “Insertable Streams for MediaStreamTrack API”. …

Eh… what? Recently, I participated in several frontend developer interviews. Unfortunately, the sad truth is that most candidates are confused about how “asynchronous” things work in JavaScript, what is considered as blocking or non-blocking code, and how (a)synchronicity relates to these. Let’s summarize the most common misconceptions and clarify them. …

To a man with a hammer, everything looks like a nail The title is a little bit provocative, isn’t it? Let’s see some of the ways we misuse one of our most valuable tools, the redux-saga library. Most projects based on this technology stack use “officially recommended” combine-reducer patterns to…

Asynchronous program flow is a well known feature in JavaScript environments. All of us extensively use callbacks, Promises at the implementation level. These structures often grow to an unmanageable beast, known as callback-, and Promise hell. Partly therefore a lot of projects choose the Redux-Saga Library to ease the handling…