Viewing profile — jasonkillian

Agreed, but it's a pretty big footgun because `useEffect` is often the seemingly easiest way to do the things you list. I've had similar conversations many times with coworkers bef…

It is a bit more complicated in practice though than "a React component is just a function that rerenders when called". In some ways, the function acts more like a class, and then …

> TypeScript's type annotations are really a DSL embedded into JavaScript. And they can, and, depending on the problem at hand, should be treated as such. I think this is the key. …

Happened to see this thread on HN, (and disclaimer I'm an engineer at Hex) very cool project jwithington! Wanted to take a second to address your comment about performance, lqet. A…

In addition to being essentially a combined "filter" and "map", it's also a "better" filter than filter itself in TypeScript in such that it narrows types much more ergonomically[0…

Wouldn't recommend doing this - if the original array is of significant length this'll get quite slow because `acc.concat` has to create a brand new array of slightly longer length…

I don't disagree with you on readability being important or on the value of developer time. It's just that the marginal costs of `memo`, `useMemo`, and `useCallback` are quite low.…

This is a great article and I agree with it fully. The argument that a lot of popular React voices have made, "React is fast and it's prematurely optimizing to worry about memoizin…

It's a current WIP idea for the spec: https://github.com/tc39/proposal-temporal/pull/700 Figuring out a name is still part of the ongoing discussion, so this specific case of `Loca…

I think this is a great proposal and a huge step in the right direction for JS. I am curious though, is there a reason not to just essentially duplicate the Joda[0]/Java[1]/ThreeTe…

Hooks are great for simple use cases like `useState`, `useContext`, some uses of `useRef`, etc. and can make the code easier to read and reason about (while conveniently working ve…

I've found js-joda is a good JS datetime library: https://github.com/js-joda/js-joda

In case it wasn't immediately obvious, there's a Stage 2 tc39 proposal that was spawned from this blog post called Temporal: https://github.com/tc39/proposal-temporal At a glance, …

For context, this was the most requested feature [0] in the isaacs repo of GitHub requests [1]. [0]: https://github.com/isaacs/github/issues/283 [1]: https://github.com/isaacs

Weirdly enough, both websites use this exact same quote: "This means you'll need to make an API (application programming interface). It's how all your friendly apps talk to each ot…

> Surely Node.js is going to be looked back upon as one of the worst mistakes in the history of 21st century programming. Why is that? There were dynamically-typed backend language…

Are you storing a large amount of offline music on an SD card? I've had that cause issues for me in the past. Their guide to fixing issues[0] is generally worth giving a shot. [0]:…

The difference is subtle (and took me a bit to figure out!). In the article's example component, the component's "main" function gets re-run on every render and a new `count` varia…

Wow, I really don't know what to think of this article. I have to give Dan credit that every time I thought the code started looking really crazy, he'd say something like: "Admitte…

Type guards are a useful construct, especially when dealing with data from an API that could come in a variety of shapes. However, if you have control over the data shape, in gener…

Wrote this article because I was inspired by the amount of data the GitHub API gives easy access to and all the sorts of interesting info that can be gleaned from it. It also raise…

Yes, your experience mirrors mine completely. It's quite difficult to get complex higher-order components working correctly, especially if you're throwing in things like defaultPro…

Ah, I didn't realize this, very cool collaboration! For those who are reading this and might find it helpful, here's a link to the official blog post on the work: https://blogs.msd…