Erik Rasmussen 👨‍💻🇺🇸🇪🇸 @erikras Twitter profile

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

5 years

This is a demo I built in about 3 hours – much of it learning drag-n-drop – over a year ago to show off the power of 🏁 React @finalformjs . 💥It uses one form to generate another, in realtime.💥 Play with it here:

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

When the Senior Developer arrives to fix the bug...

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

9 months

@stats_feed This is why February sucks.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 months

When people make demands in Open Source issues...

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@stats_feed This means that for every 20yo in Iceland, there’s a 11yo? 🤔

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 months

Frontend devs when some teenager releases a new JavaScript framework

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 months

In Prague they have several shops where all they sell are debugging tools.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 years

#BeatlesInCode

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

#TypeScript Pro Tip: When passing around unique identifiers of objects, select the type of the identifier right off of the object type. - More refactor-proof 🔒 - Less cognitive load 🤯 - Much more legible to others 🧐

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@stats_feed Your sorting algorithm is a little buggy. 😂

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

My frontend engineer brain read this life hack the wrong way.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

useAffect() – for when you need to pretend that you still love React hooks

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

8 months

Did you know these are all individual <div>s animated with CSS? 🤯 #AppleEvent Let’s dive into the code! 🧵

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@PicturesFoIder What is this nonsense?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

This should be mandatory reading for anyone in the JavaScript community. What a WILD story! I remember some of it as it was happening, but wow…

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

7 months

My colleague just suggested I do: useEffect(() => { runSomeSideEffect(); }, [useGlobalValueFromContext()]) I’m in talks with HR to have Dan Abramov, in a police uniform 👮‍♂️, escort him off the premises. A hook in a dependency array is grounds for immediate termination, right?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 years

TypeScript is a linter.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

My 6yo just blew my mind: "Daddy, they should make a TV where you can push a button on it to make the remote beep so you can find the remote!" 🤯

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 months

I've never understood why there's a difference between "sign up" and "sign in" with OAuth services. Just 🤬 upsert! If it's a new signup, send them to onboarding, otherwise to the dashboard. @ClerkDev , do you have a reason I haven't considered?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

TIL: @1Password has a CLI! So I can securely publish to @npmjs with: npm publish --otp $(op get totp npmjs) #productivity #devtwitter Get CLI here:

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@mweststrate It's nice to finally get some closure on this debate.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

I wrote down some thoughts on Open Source Sustainability. It's a hard problem. We need to raise awareness. I'd be much obliged if you'd read and share.

Open Source Sustainability

The status quo in open source is broken. Corporations profit hugely from open source libraries, and give almost nothing back, which leans to burnout which is bad for everyone.

dev.to

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 years

Unit tests just saved my ass.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

How Redux was born at @ReactEurope .

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 months

Kinda proud of this TypeScript I wrote this morning. The ubiquitous pluralize() function:

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

10 months

I want a image resizing CDN SaaS where I can do: <img src="cdnservice .com?url= https://mydomain/huge-image.jpg&width=200"/> The first request does the resizing and distribution to a CDN and returns the smaller image, and every subsequent request just gives the smaller image.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

♻️ A lot of #JavaScript devs know about reduce(), but very few people know about reuse() and recycle(). –– Array.prototype.reuse = function () { return this; } Array.prototype.recycle = function () { return Array.from(this); }

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

Moving from JS to @typescript feels like so much time is being wasted appeasing the vindictive TS gods. But I just went back to JS and spent HOURS debugging a thing that TS would've caught as I was coding it. 🤦‍♂️🤦‍♂️🤦‍♂️ #helicopterparenting vs. #freerangekids

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

I've got another #TypeScript question.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@tlakomy forEach() and every() one of us, we must find() some sort() of map() so our team includes() some() slice() of moral values() and keys() to join() together to reduce() the desire to push() the indexOf() hatred, and shift() thoughts and minds. –– Hey, boss, when can I get arrays?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

6 months

DevLife

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

8 months

. . . No, not really. It’s a 6.6MB video. But you weren’t sure there for a second, were you?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

6 years

Today I'm launching a brand new form library. Introducing... 🏁 Final Form Feedback, claps, ⭐s and RTs appreciated.

🏁 Final Form: The road to the checkered flag

The contents of this story have migrated to erikras.com.

codeburst.io

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

Just got first recruiter email asking for @remix_run skills. How many years of experience should I claim to have? 🤣

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

Hey backend nerds! I need some help. You've got 100k requests/minute coming in, that need to return immediately, and you need to put a record in a database for every one. What architecture do you use?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@dan_abramov Open source form libraries, bro. My yacht can barely float with all the gold bars.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

It’s TypeScript Question Time again!! String literal types are awesome, but I need a way to expand (iterate over?) them to create a more complex type. Is this possible?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 months

NO BLOCKERS! NOBLOCKERS!!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

@vercel @rauchg Wow, @Rich_Harris is expensive! 😂

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Reading about the newest JavaScript framework.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@stats_feed Isn’t Iceland where they have that “Before we bone, are you my cousin?” app? Scandi-lous!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@stats_feed I know that’s not exactly how averages work, but there’s a huge pile of 14yos on that side of the fulcrum to keep the average so low.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

My brain did this to me when I couldn't sleep last night.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

9 months

@stats_feed Thursdays.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

When you make a change on prod when you thought you were on dev. 😅

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

Oscillating between TypeScript and Javascript is so jarring. Back in JS land, and I'm like, "WTF, you mean I could just pass ANYTHING to this function? Tell me what you expect of me!"

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 months

It's a shame TypeScript can't *require* a specific kind of React component as children of another. It would make composibility libraries so much more powerful.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

@DavidKPiano Well, ideally it's a hashset, for faster lookups. 🥁

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

I'm getting really 🤬 tired of every file I edit being called index.js. There *must* be a better way to organize javascript files.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

@JoshConstine That’s rad!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

. @remix_run suffers from the same problem as #React : the keyword actively damages any search query on YouTube.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

Yesterday I had a bug in my code caused by A FREAKIN GLOBAL VARIABLE called `length` that’s just *always there* in #JavaScript . Just when you think you’ve stepped in all the JS holes…

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@cluedont But now he barks like a chihuahua!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

I work on frontends and backends, but not weekends.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

The single greatest feedback that can be given to a tech talk speaker is: "You inspired me to go build something." I always give this feedback as often as it's true, and appreciate it as the highest honor when I receive it. 🥰

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@markdalgleish No one wants to see your "div pics".

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Wow. Copilot just generated this useEffect for me. It’s exactly the kind of mistake that a very junior React dev would make. It does “work”, but not the way the “coder” intended. 👏 always! 👏 include! 👏 dependency! 👏 array! 👏 Worst API default ever?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

@DavidKPiano Wisdom is a collection of mistakes made.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 years

Did you know? In the UK, they spell it: console.logue() 🇬🇧

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Earlier today, my brain pattern-matched on a CSS color that was something like ` #00d0dd `, and I realized that @kentcdodds needs this t-shirt. It turns out that ` #CD0DD5 ` is a fuchsia tone.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

6 months

Hey, React nerds. My intuition is that memoizing JSX elements is wrong, and it's the *data* that should be memoized. What are the arguments in either direction?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Ooh, I spotted a `do {} while ()` in the wild! In my experience, it seems to be one of the most rarely used language constructs (in JS).

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

At @centered_app , we migrated: Express on @heroku → Next on @vercel Lighthouse score: 39 → 100 🤯📈

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

8 years

@RichardDawkins Autocorrect just made me type "The Selfie Gene". *shudder*

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

Welcome to my conference talk.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

After reading the “vs Next” blog post, running through the tutorial, and adapting it to one of my existing projects, I’m convinced that I’ll be using @remix_run for all of my future projects (and converting some existing ones). I can’t wait to reap the benefits of skipping SSG!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

TypeScript Question Time!! I want to determine a type based on a union of objects.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

9 months

@mattpocockuk I remember back when you were declaring variables with `var`.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 months

@ThePrimeagen Please! Is there a docker on the plane?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

I just booted up the TypeScript playground to ask you all a question, but then I figured it out, so instead I’m sharing the solution. This feels like a really common pattern. Can you think of a more elegant solution?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@markdalgleish WHERE DO I PUT MY CSS, MARK?!? CSS-in-HTML-in-JS or CSS-in-JS-in-HTML?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

If you haven't built a #COVID19 data visualization website yet, are you really a web dev? 🤔

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Hello, dear followers. I’m officially looking for a job starting in 2023. DMs open. Act now before your competitor snatches up this talent! 😂

Erik Rasmussen - Mavenoid | LinkedIn

Creador de dos de las librerías más populares de formularios en React: Redux Form y React Final Form, con más de 2 millones de descargas al mes. Orador frecuente y docente de talleres de React por...

es.linkedin.com

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

@jaredpalmer Full stack!!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

ATTENTION: Due to #COVID19 all TCP requests are being converted to UDP to avoid handshakes. Thank you. I'm here all week, literally quarantined in this comedy club for the foreseeable future.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 months

@mattpocockuk I hand roll my XMLHttpRequests artisanally like god intended!

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

As of today, I have been a dad for ten years!

Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

15 years

So far I'm crying more than my hour-old daughter.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

@kentcdodds @remix_run Doctor: “Kent, what you need now is REST.” Kent: “I know! I do that with action functions in Remix!”

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 months

Last week I invented a clever way to manage state in React. I implemented it in a few PRs at work, and I even wrote a blog post, excited to share my discovery with the world. Luckily I didn’t publish, because this week I discovered that the approach doesn’t work at all. 😅🤦‍♂️

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

8 months

@engineers_feed 🔨 = 7 🪚 = 3 🧰 = 17 All together = 27

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Asked for a table at a French restaurant, and the waiter asked, “Sea view?” I answered, “Sea view plaît!”

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

💣 I've spent the past two weeks rewriting 🏁 React Final Form using hooks and rewriting *all* the tests to use 🐐 React Testing Library. It's been a great learning experience, and the library feels as robust as ever. Up to 100% coverage...hope to release sometime this week. ⏱

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 years

1. onMouseEnter 2. Wait n ms 3. Animate in new element 4. Wait for animation to finish 5. Stop any of this onMouseLeave All 50 times I’ve built this #UI , I screw it up. Today, I coded an #XState machine by hand, from scratch, to do this, and it worked. First. 🤬. Time! 💥 🎤 ⬇️

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

3 months

I just learned the `-?` syntax in TypeScript. It makes all the keys required (removes "optionality").

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

8 months

@mattpocockuk Without googling I don’t know what ANYTHING in package.json does. Next interview question?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

Typescript would not have allowed you to make this mistake. –– I'm gonna leave this here and link back to it a thousand times. So chances are seeing this from The Future. #TypeScript

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 years

Is there a single reason to ever use ES6 classes in JavaScript? Closures feel so much more lightweight and simpler. If I never see `this` again, it will be too late. #NotRhetorical

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

🎶

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

@tlakomy Good return on investment.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

@simon1972 @qikipedia My [smartass] son says “the most boring person in the word does not exist, because that designation would make him interesting!” 🙄

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

6 years

The form boys. #react #forms

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

Retweet this if you have a useCurrentUser() hook in your project. #React

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

Alright dev nerds. Please argue for or against the following take: –– There's no reason to use Map() in JS because objects are already doing hashing internally, and Map() provides no additional value over objects. –– Go! 👇

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

It sounds dumb, but I always feel like such a badass programmer when I use a `finally` block. What keyword boosts your ego?

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

I recreated Dan’s famous React Lifecycle Method chart as an XState state chart. –– Code:

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

5 months

Some services are like, "You already have an account, so go click the 'login with google' button instead of the 'sign in with google' one you just clicked." Why??

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

@tlakomy @eggheadio 3. Solid dad jokes about CSS.

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

1 year

What if a form library were so framework agnostic that it could provide value to not-yet-invented frontend frameworks? Or the new hotness, @solid_js .

Solid Final Form – Proof of Concept

Since its inception, Final Form was designed to outlive existing frameworks.

erikras.com

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

4 years

The new @Facebook UI has so many own goals. When you have to truncate the word "Like" to "Li...", c'mon. Maybe they should rename it to Facepalm. 🤦‍♂️

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Erik Rasmussen 👨‍💻🇺🇸🇪🇸

@erikras

2 years

I just walked a non-technical person through one of my @statelyai state charts, and… They spotted a bug. 💥

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