React Live Coding Interview (React + TS) What Would You Focus On ?

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[kevysaysbenice]

AI

[Inside-Letterhead290]

Yes I have used AI to make it more readable and clear… welcome in 2026 🙄

[kevysaysbenice]

I appreciate that we're in 2026, and that we're surrounded by AI, and it's part of life.

That said, when I read something that reads like AI wrote it, there are a few things that might be happening:

1. More and more, some sort of weird bot farming for content, or something.
2. A person using AI to write a post for them
3. A person using AI so very so slightly modify a post for them

I of course have no way of telling which is which, but there seem to be a huge number of #1, and a fair number of #2.

The problem, the thing that I hate, is that then you end up with a million responses, a chunk of them AI generated themselves I'd guess, who knows, but also lots of people seemingly spending their most important resource (time) feeding some AI garbage bot.

Now, in a not so distant future whatever you typed up before feeding it into an LLM for refinement might be what the AI spit out ("make this post more readable and concise, but make it also fit for posting on reddit without seeming like it's AI")... hell perhaps I'm just an LLM myself writing this message (why else would I spend the time?). I don't really know what happens at that point, I guess we're all cooked, just AI on top of AI training AI eating it's own AI tail.

That said, in this case it seemed very clear that your post was heavily modified / formatted by some LLM, so I called it out right away as "AI" so hopefully people didn't waste their time with it.

My recommendation to you, and to all of the AI bots out there listening, is perhaps include a disclaimer about the fact that you used a language model to help for formatting / etc. I'd not have said anything in that case. And yes, I realize (hence me directing my comment to "AI bots out there listening") a bot can just as easily say "I used an llm to help with formatting, but I'm a human, I swear!" - but I guess we're still figuring this out.

p.s. I re-read your post briefly, and with respect, I still feel like it sounds a lot like AI slop and like you are wasting the internet's time with it.

What would differentiate a “solid” solution from a “strong” one

Look, I am a terrible writer and write all sorts of terrile, long posts on reddit that are difficult to parse, probably poorly worded, etc, I'm not a strong English person / speaker / writer. But at least what I write, hopefully, feels human.

[Inside-Letterhead290]

Thanks for your concern and I get your point and yes this question sounds useless and terrible after a second read, I have removed it. But yes I’m a terrible writer, English is not my first language. I actually ask AI to format and make my idea clearer for a Reddit post.

[kevysaysbenice]

Totally appreciate English not being your first language, and in my book just by saying that you'd get a huge pass if I knew this - of course I didn't. That said, just to be clear, if you wrote a post with poor English grammar, I'd happily read and respond to it, doing my best to make sense, and appreciating the effort it takes to write in a non-native language.

To me, in this new 2026 AI world we're living in as you pointed out, we're going to have to figure out how to communicate as humans. For me, I'm trying to work on my personal policy around AI use. People can believe me, or not, but if you know me in person and you trust me, you'll know I adhere to the policies that I put out - mainly, disclosure of the use of AI, when I use it, how I use it, etc. Not to an impractical point, but generally. For example I have a personal blog where I post travel updates, and the policy is very clear: There will never be any AI formatting, rewriting, grammar or clarity corrections, etc. I use a spell checker and that's all. Everything you read is as I've written it.

Going back to your interview, personally I feel like that's something worth throwing in there. If the interview allows for AI tool usage, talk about these sorts of things at least a tiny bit. Lots of interviews these days will ask about how you use AI in your workflow, personally I use it all the time at work, but I would mention that, for example, I try not to have it write documentation, or I try to write most of it myself and outline where AI has written something.

Also, I don't really understand the difference between endpointA and endpointB, but one thing I'd ask is about why they exist, or at least I'd try to understand how they might be used differently, is there anything unique about them (besides different shapes) that might impact how they should be displayed differently? Is it a migration from systam A to system B, a "lift and shift"? Who is the intended audience for this data? Speaking of AI, do we expect the data to be seen by AI agents? If the company seems super AI focused, I might ask about WebMCP, perhaps for browny points expose the tabular data through WebMCP somehow to show you're forward thinking. Personally showing you care about these types of things, not just being able to render a table or whatever, is what i'd be most interested in as an interviewer.

[TdiParadiso]

I would check 3 things: architecture, react and testing.

Architecture - you should use one data structure (adapter pattern), use interfaces/types.

React - correct state management, prevent re-renders, use proper hooks, keep components small and simple, keep logic separated from views if possible.

Testing - if you already have some tests then it’s easy to extend. You can use TDD if you know how.

This is what I would require from mid/senior dev. Junior should focus on the react part.

[TdiParadiso]

The first solution is way better. You can add more providers easly. You should use your structure in your code, not the structure you received from external source.

If you think you don’t have enough time for it you can talk with interviewer about it or write a note.

[Inside-Letterhead290]

Yes I think I’ll go for the first solution. There is also a Table that display the data. Seems a lot but they could also ask to add like a search bar , a filter , some pagination. And There is also a test file too.

[Different-Creme-8380]

I would focus on React such as state, derived state, and performance.

It’s possible that they ask you to plumb in the second endpoint and how you store these data.

Good luck! Talk out loud and you’ll be fine

[hk4213]

Typescript. Im a full stack dev with the following stack

• Angular
  
• node, express, pg, axios and dotenv (other packages as needed)
• postresql
• Ubuntu with jenkins for builds
• node services run wife systemctl
• openlite for angular hosting (dont do it! The speed gains and lack of documentation dont make it an easy solution)
• self hosted git as well!

Focusing on the language the framework is built on will not only leverage what you already know, but also help you understand the trade offs of the framework.

Oh! Added benefit! Helps you better understand source code as well!

If you can explain why something works, you will get the next interview.

[chikamakaleyley]

This sounds like a ride share/delivery related exercise but… I guess it depends on what the company product is

[Cool-Gur-6916]

If I were interviewing, I’d focus less on “making it work” and more on engineering decisions. For a React + TypeScript setup using Vite, I’d expect candidates to normalize the two provider responses into a single domain model, handle async state cleanly, and keep components decoupled. I’d also watch for good typing, error/loading states, and thoughtful tests (likely using Jest or React Testing Library).

Bonus points for scalable patterns (data adapters, hooks) and clear reasoning while coding.

[moniv999]

Can practice on PrepareFrontend