Daniel Pertu - DEV Community

Daniel Pertu

Oct 22

Nine indexes on one queue table, five of them partial, three of them on a jsonb path

#postgres #database #typescript #webdev

6 min read

Daniel Pertu

Oct 22

Our design system is a markdown table of nineteen motifs, and the useful column is the one that says no

#css #react #designsystems #webdev

6 min read

Daniel Pertu

Oct 22

Eighteen useState calls in one help panel, and the key prop that throws them all away

#react #webdev #typescript #a11y

1

6 min read

Daniel Pertu

Oct 22

Four form components hold every form in our app, and writing this post found the one bug in them

#react #webdev #a11y #nextjs

6 min read

Daniel Pertu

Oct 22

Our welcome card prints a five digit permit number that cannot tell you how many users we have

#react #nextjs #webdev #typescript

5 min read

Daniel Pertu

Oct 22

Our terms notice has no Agree button, because carrying on is the acceptance

#webdev #nextjs #react #typescript

1

5 min read

Daniel Pertu

Oct 22

A feature shipped as 21 files of prose, and the word "five" had to survive in five other sentences

#nextjs #webdev #seo #typescript

7 min read

Daniel Pertu

Oct 22

I wrote that the fix was not a deletion. Eight days later it was, and the old URL now answers 200

#nextjs #stripe #webdev #typescript

5 min read

Daniel Pertu

Oct 22

I told readers to curl our pricing endpoint, and seventeen days later it answers 404

#nextjs #webdev #stripe #api

1

5 min read

Daniel Pertu

Oct 22

Our plan change cancelled your old subscription first, so closing the Checkout tab left you on nothing

#stripe #webdev #typescript #saas

1

6 min read

Daniel Pertu

Oct 22

Two features both wanted to pick the currency, so one of them is switched off in code

#stripe #nextjs #typescript #saas

1

6 min read

Daniel Pertu

Oct 22

There are no Prices in our Stripe Dashboard, only 24 rates in a table

#stripe #nextjs #typescript #webdev

1

6 min read

Daniel Pertu

Oct 22

A search in our app has three identities, and the one we send over HTTP is the one that moves

#react #typescript #node #electron

1

7 min read

Daniel Pertu

Oct 22

Two version numbers in our settings file, and no code reads either of them

#typescript #electron #node #webdev

1

6 min read

Daniel Pertu

Oct 22

Our window reloads every time you open it, so our event stream opens with 203 frames

#node #react #electron #typescript

1

7 min read

Daniel Pertu

Oct 22

Three clocks in one window at 1s, 5s and 30s, and not one component uses what the hook returns

#react #typescript #electron #webdev

6 min read

Daniel Pertu

Oct 22

Three download buttons, no user agent sniffing, and a link that stops working 60 seconds after you click it

#webdev #nextjs #electron #cloudflare

6 min read

Daniel Pertu

Oct 22

Our activation code bans I and O, and the prefix in front of it is NTFIO

#security #typescript #node #webdev

6 min read

Daniel Pertu

Oct 22

Our Button has 696 call sites, and four of our five busiest public pages contain no button element at all

#react #webdev #a11y #typescript

5 min read

Daniel Pertu

Oct 22

The obvious SEO move was eight recipe collection pages, and 37 of our 38 recipes suit low FODMAP, so we built none of them

#seo #nextjs #webdev #typescript

4 min read

Daniel Pertu

Oct 22

The one careful sentence on our reference page is not written in the page, it is read off the product at build time

#nextjs #typescript #webdev #architecture

5 min read

Daniel Pertu

Oct 22

Five URLs our test suite demands we never publish, and the two ways a published page can vanish with the build still green

#testing #seo #typescript #nextjs

5 min read

Daniel Pertu

Oct 22

375 URLs in our sitemap come from seven sources, and the 132 biggest are found by reading a directory off disk

#nextjs #seo #webdev #typescript

5 min read

Daniel Pertu

Oct 22

Ticking a condition in our app switches on an allergy, and unticking the condition does not switch the allergy off

#reactnative #typescript #ux #mobile

5 min read

Daniel Pertu

Oct 22

Twenty lines of our copy spell out eight conditions, and the one that still says seven is the description Google shows

#typescript #webdev #seo #nextjs

4 min read

Daniel Pertu

Oct 22

Our cookie policy names four cookies and three storage keys, and I counted what a browser really holds after one visit

#webdev #privacy #nextjs #testing

1

5 min read

Daniel Pertu

Oct 22

Our sitemap is 516 URLs and not one of them comes from the database any more

#nextjs #seo #webdev #typescript

4 min read

Daniel Pertu

Oct 22

Our icon package is 90 MB of node_modules, and I measured exactly which ten of its 5,478 icons reach the homepage

#nextjs #performance #react #webdev

5 min read

Daniel Pertu

Oct 22

Our Sentry config sets one option the SDK has deleted and two more under a key whose own type says it has no effect

#nextjs #sentry #typescript #webdev

5 min read

Daniel Pertu

Oct 22

Three font files preload on every page of our site, and on five of the six I measured one of them has nothing to render

#nextjs #performance #css #webdev

5 min read

Daniel Pertu

Oct 21

Twelve try blocks in our renderer, ten of them wrap new URL, and the fetch wrapper everything else trusts has none

#react #typescript #electron #webdev

1

6 min read

Daniel Pertu

Oct 21

Four ways our code avoids importing Electron, and the one file that imports it at the top and takes ten others with it

#electron #typescript #architecture #testing

1

6 min read

Daniel Pertu

Oct 21

Four full reads of a 4 MB text file to decide one listing, on the thread that serves our UI

#node #performance #electron #typescript

1

6 min read

Daniel Pertu

Oct 21

Our only GitHub Actions workflow is a database backup, and 7,715 tests run on one laptop

#devops #testing #nextjs #webdev

1

4 min read

Daniel Pertu

Oct 21

One page asks for 108 image URLs, every one says max-age=0, and the only thing we cache in a browser is four logos

#nextjs #performance #webdev #vercel

4 min read

Daniel Pertu

Oct 21

One line removes our app menu, and on macOS that is also the line that removes Cmd+V

#electron #macos #javascript #ux

5 min read

Daniel Pertu

Oct 21

Our tsconfig says target ES2017, and the JavaScript we ship to browsers contains ??=

#typescript #nextjs #javascript #webdev

1

3 min read

Daniel Pertu

Oct 21

The page headed "Accept your invite" has a Google button that makes accepting the invite impossible

#nextjs #oauth #postgres #webdev

1

4 min read

Daniel Pertu

Oct 21

A webmanifest cannot read a CSS variable, so our brand colour is spelled twice: once as OKLCH and once as hex

#webdev #nextjs #css #pwa

1

7 min read

Daniel Pertu

Oct 21

Our window decides a link is ours with a string prefix, and the string that beats it has an @ in it

#electron #security #javascript #node

1

5 min read

Daniel Pertu

Oct 21

We have a folder called repositories, and 31 files that query the database without going near it

#architecture #typescript #database #webdev

1

4 min read

Daniel Pertu

Oct 21

The only free text a stranger can write into our catalogue is a product name, and the isNull in the WHERE is the whole concurrency story

#postgres #typescript #api #webdev

1

5 min read

Daniel Pertu

Oct 21

Our proxy writes down where you were going on every bounce to the login form, and the login form has never read it

#nextjs #authentication #webdev #typescript

1

4 min read

Daniel Pertu

Oct 21

Our proposal screen arrives already written, and every part of it has a Change button instead of an empty field

#react #typescript #webdev #ux

9 min read

Daniel Pertu

Oct 21

Our migration folder has 51 numbers, 50 files, 49 snapshots, and 289 lines of SQL the tool will never touch

#postgres #database #webdev #typescript

5 min read

Daniel Pertu

Oct 21

Our lock lived for three hours, our schedule fired every fifteen minutes, and every one of those skipped runs was recorded as a success

#redis #node #devops #architecture

1

5 min read

Daniel Pertu

Oct 21

Fifteen pages, 45 sibling links, and the one page no sibling links to

#seo #nextjs #typescript #webdev

6 min read

Daniel Pertu

Oct 21

strict is not strict: I turned on all nine flags our tsconfig leaves off, and counted

#typescript #webdev #nextjs #programming

4 min read

Daniel Pertu

Oct 21

Shipping a reminder email must not remind everyone who signed up before it existed, so ours has a seven day cutoff

#postgres #typescript #webdev #saas

8 min read

Daniel Pertu

Oct 21

One picker for seven conditions and fourteen allergies, and its hardest rule is that nothing you selected may hide

#reactnative #a11y #ux #typescript

4 min read

Daniel Pertu

Oct 21

Our Checkout sends the buyer and the quitter to the same URL, and the thank-you page we wrote is reachable by nobody

#stripe #nextjs #react #webdev

4 min read

Daniel Pertu

Oct 21

Our 404 is a field guide entry for a bird that was never recorded, and our error boundary is not allowed to be funny

#webdev #nextjs #design #react

7 min read

Daniel Pertu

Oct 21

Our settlement job and our checkout webhook can reach for the same reward row, and the one that proceeds is whoever gets it back from an UPDATE

#stripe #postgres #typescript #architecture

5 min read

Daniel Pertu

Oct 21

Our device cap is written only by the Stripe webhook, so the one plan with a cap of 2 is the one nobody can reach

#redis #stripe #nextjs #webdev

5 min read

Daniel Pertu

Oct 21

Intl and Stripe disagree about three of the currencies we sell in, and 450000 is how you charge 4,500 forint

#stripe #typescript #testing #i18n

5 min read

Daniel Pertu

Oct 21

Our robots.txt names eleven AI crawlers and then repeats the whole policy, because a crawler only obeys one group

#seo #webdev #nextjs #ai

1

6 min read

Daniel Pertu

Oct 21

Our QR codes are 5,906 characters of base64 in a Postgres text column, and the row has to exist before the image can be made

#postgres #nextjs #typescript #webdev

4 min read

Daniel Pertu

Oct 21

One palette in a package, 28 CSS variables beside it, and the file that calls itself the source of truth is still green

#design #css #reactnative #webdev

5 min read

Daniel Pertu

Oct 21

Four calculators are four static pages with one client component each, and the index that would list them does not exist

#nextjs #react #typescript #webdev

8 min read

Daniel Pertu

Oct 21

A dead URL on our site answers 404 in one namespace and a 307 to the login form in the next

#nextjs #seo #webdev #typescript

5 min read

1 Week Community Wellness Streak

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