CJ
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w3cj.com
CJ
@w3cj.com
3.5K followers 1.6K following 140 posts
Full Stack Dev, Explainer of Things Senior Creator at @syntax.fm / @sentry.io Host of coding.garden on Twitch and YouTube
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CJ @w3cj.com · 18h
Apple accidentally left the source maps on for the new @svelte.dev web based App Store. Here's what I found.

🍿 Watch: www.youtube.com/watch?v=F1RV...
Apple Source Code LEAKED | App Store Analysis
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · 8d
Some devs are leaning a bit too hard on AI for solutions and workflow.

In my latest video I show a few examples and give some advice on what to do / use instead.

Watch 🍿 www.youtube.com/watch?v=pVBK...
Stop Using AI For This
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · 9d
Made it to SF!
CJ @w3cj.com · 13d
Looking for more examples of dumb uses of AI. Let me know if you've come across any.
w3cj.com CJ @w3cj.com · 14d
What dumb uses of AI have you come across?

I'm thinking of things that have existing deterministic solutions, vs expecting an LLM to get it right every time.

Examples:

"Given this email extract all phone numbers" vs regular expressions
"Convert JSON into a type" vs IDE extension
CJ @w3cj.com · 14d
Wow. Found it here:

docs.claude.com/en/docs/clau...

This particular prompt could be replaced by a spell-check plugin for an existing linting tool.
Common workflows - Claude Docs
Learn about common workflows with Claude Code.
docs.claude.com
CJ @w3cj.com · 14d
More examples:

"Rename this variable X to Y" vs IDE refactoring
"Generate a XYZ project" vs use XYZ CLI scaffold
"Merge this data together" vs write a script
"Fix these linting errors" vs run the --fix CLI
CJ @w3cj.com · 14d
What dumb uses of AI have you come across?

I'm thinking of things that have existing deterministic solutions, vs expecting an LLM to get it right every time.

Examples:

"Given this email extract all phone numbers" vs regular expressions
"Convert JSON into a type" vs IDE extension
CJ @w3cj.com · 16d
午前5時、眠れない
東京の新橋駅と汐留駅を散策

リミナル
スペース

5AM I can't sleep
exploring tokyo shimbashi and shiodome station

L I M I N A L
S P A C E S
CJ @w3cj.com · 16d
Was in Tokyo for HonoConf! But I'm headed back now. Will be going to Github Universe in SF next week.
CJ @w3cj.com · 17d
東京タワーへの散歩
CJ @w3cj.com · 19d
Made it to Tokyo! I'll be giving a talk at @hono.dev conf on Saturday.

Haven't done much exploring yet, but here are some shots I took of Shiodome / Ginza after landing.
CJ @w3cj.com · 19d
My talk from UtahJS on @vuejs.org ejs.org Vapor mode is up!

I start the talk with a quick history of rendering strategies in frontend JS from the past 15 years and then show what Vue vapor mode is and how to try it out.

The future is fast 😎

Watch 🍿 www.youtube.com/watch?v=uLs-...
Blazing Fast Vue.js with Vapor Mode by CJ Reynolds
YouTube video by UtahJS
www.youtube.com
CJ @w3cj.com · 24d
Some photos I took today of the leaves changing here in Colorado.
CJ @w3cj.com · 25d
My frustration with AI coding is on full display here.
Reposted by CJ
the AI FOMO is strong
CJ @w3cj.com · 26d
AI based programming has become a religion.
FOLLOW MY INCANTATIONS AND ALL YOUR DREAMS WILL COME TRUE
CJ @w3cj.com · 26d
I've been collecting thoughts about this for a while now. Finally took the time to put it all into words. You might not agree. That's okay. I'm just starting the discussion.
AI coding sucks

CJ just one-shotted a 15 min rant and it's incredibly refreshing.

www.youtube.com/watch?v=0ZUk...
AI Coding Sucks
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · 26d
At this point I'm seeing "skill issue" thrown around way too much. It's super easy to dismiss someone. It takes much more time and care to understand where someone is coming from and what they might be missing.
CJ @w3cj.com · Sep 9
In my latest video I talk about what classless CSS is, why you might use it and showcase a few of my favorite frameworks.

I also share a tool I made to compare 69 classless CSS frameworks side-by-side.

Watch 🍿: www.youtube.com/watch?v=SmmL...
CSS Without Classes! Styled Apps By Default
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · Jul 15
In my latest video over on @syntax.fm I try out @anthropic.com Claude Code for the first time by asking it to do a series of increasingly difficult challenges.

Will I replace Cursor IDE with Claude Code?? Watch and find out 🍿: www.youtube.com/watch?v=TZMX...
Cursor User Tries Claude Code
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · Jul 1
In my latest video over on @syntax.fm I explain what MCP is, why it's needed and show how to build and debug your own MCP server.

Watch 🍿: www.youtube.com/watch?v=1Fqi...
MCP Explained | What, Why and How
YouTube video by Syntax
www.youtube.com
CJ @w3cj.com · Jun 26
What MCP servers do you use the most? What resources for using / learning about MCP would you recommend?
CJ @w3cj.com · Jun 18
In my latest video over on @syntax.fm I showcase the 9 new features added to the JavaScript language in this years spec.

Watch 🍿: www.youtube.com/watch?v=1-cj...
9 NEW JavaScript Features in ES2025
YouTube video by Syntax
www.youtube.com