Echo JS 0.11.0

probably better to use a combination of setInterval and/or requestAnimationFrame and update when the seconds actually changes.. with the setTimeout loop, it will get a jarring 2s shift on occassion... more noticeable with a digital readout, but it will happen as you hit borderline timing on the second.

Arrays will get borked with this implementation.  See the fclone source for something more complete.

Worth noting that "classical" inheritance in JS is mostly syntax sugar over prototype based inheritance with all it's performance implications.

Math.random isn't a good random number generator, especially for smaller number variations.

Use window.crypto or import 'crypto' for node.

While this is a cool abstraction, I do think that React is here to stay for a very long time, and that JSX based component library options are also likely to stay around for a very long time.

While the DOM is relatively stable now, this wasn't always the case, and with the expansion of WASM libraries and tooling that will come in the next few years, it could get interesting. An abstraction like in TFA might be better served with a WASM targeted application management layer/framework.

It's a bit opinionated.  No test setup anywhere in sight.  Redux Saga chosen over say thunks.  As mentioned no Saga examples.  Organized by type, not feature.

Really doesn't add much over create-react-app imo.

Both of these components don't seem to have anything actually wired for click events, feels like half the example is missing and not in a way that makes things really understandable.

Would be nice if you used github pages to host an active version of this.

Why the hell did you just turn around and post this again literally 2 days after you already posted it?

TBH, it's just massive information overload to the point where it really loses value.  There's some inline bits as well as external links.