Daniel Pertu - DEV Community

Daniel Pertu

Oct 14

Our rate limiter lets you through when it breaks, and it never learns your email address

#typescript #redis #webdev #security

1

7 min read

Daniel Pertu

Oct 14

Googlebot sees our prices in pounds and you probably do not, and the figure on the page is always the figure charged

#typescript #stripe #nextjs #webdev

1

6 min read

Daniel Pertu

Oct 14

Typing "pubs" into our business search puts Public safety service first, and the fix was not better matching

#typescript #nextjs #webdev #javascript

6 min read

Daniel Pertu

Oct 14

Our free plan hides creators with a window function, and the locked count is the same predicate with a "not" in front

#postgres #sql #typescript #saas

1

5 min read

Daniel Pertu

Oct 14

Our content pages are written in two inline markup tokens, and one test follows all 342 internal links

#typescript #webdev #seo #testing

5 min read

Daniel Pertu

Oct 14

A prefetch of our pricing page is a different URL, and our auth check nearly sent it to the login page

#nextjs #webdev #typescript #react

1

5 min read

Daniel Pertu

Oct 14

Twelve tables, 21 foreign keys, and not one ON DELETE CASCADE, so "delete my history" is four statements in a fixed order

#postgres #typescript #webdev #privacy

1

5 min read

Daniel Pertu

Oct 14

Railway builds our WebSocket server from its own directory, so it cannot see the workspace it belongs to

#node #devops #typescript #webdev

5 min read

Daniel Pertu

Oct 14

Our two halves deploy to two platforms, so every single field in the message between them is optional

#typescript #node #webdev #architecture

5 min read

Daniel Pertu

Oct 14

Two phones at the same table pressed Join in the same moment, and the loser was told the quiz did not exist

#postgres #typescript #webdev #nextjs

6 min read

Daniel Pertu

Oct 14

Every table in our database is inserted with the word "placeholder" in a NOT NULL column, because the QR code contains the row's own id

#postgres #typescript #nextjs #webdev

6 min read

Daniel Pertu

Oct 14

Our maintenance switch is a boolean in the repository, because the database is the thing that is down

#nextjs #typescript #webdev #devops

6 min read

Daniel Pertu

Oct 14

Our comparison pages have a required field for where the competitor wins, and 13 of 49 rows say it is them

#typescript #nextjs #seo #webdev

6 min read

Daniel Pertu

Oct 14

Our two checkout routes refuse four things before Stripe is involved, and the order is by cost

#nextjs #stripe #typescript #api

6 min read

Daniel Pertu

Oct 14

Two processes count the same three numbers, and the renderer's shortcut turns rightmove.co.uk into co.uk

#react #typescript #electron #webdev

6 min read

Daniel Pertu

Oct 14

Our price is a component six times and a hardcoded string fifty-two times, and one sentence decides which

#nextjs #react #typescript #webdev

6 min read

Daniel Pertu

Oct 14

Our header is 48 pixels tall, every page offsets by 56, and the root layout renders no header at all

#nextjs #react #css #webdev

6 min read

Daniel Pertu

Oct 14

Our inbound mail webhook answers 200 to everything it refuses, and 500 to the one thing it cannot do

#webdev #email #nextjs #typescript

7 min read

Daniel Pertu

Oct 14

40 font-face blocks, 10 files, and the word bold appears nowhere: three typefaces reaching a Next.js site and an Expo app

#nextjs #reactnative #css #performance

5 min read

Daniel Pertu

Oct 14

A purchase intent has to survive a round trip through Google, so ours rides in a query parameter that deletes itself on arrival

#nextjs #react #stripe #webdev

5 min read

Daniel Pertu

Oct 14

A 3% zoom hid a one-pixel rounding gap for 372 cards, then cut the first letters off the 373rd

#react #css #nextjs #webdev

6 min read

Daniel Pertu

Oct 14

Four files in our monorepo print the same legally required sentence, and three of them disagree about its wording

#typescript #reactnative #nextjs #webdev

5 min read

Daniel Pertu

Oct 14

"4200subscribers": the content said "black" and the renderer believed it

#typescript #react #css #webdev

4 min read

Daniel Pertu

Oct 14

Our favicon is 1,322 bytes, our touch icon is rasterised from it at build time, and we serve no favicon.ico at all

#nextjs #webdev #seo #typescript

5 min read

Daniel Pertu

Oct 14

A loading skeleton is a second implementation of your layout, and mine was lying about four things

#nextjs #react #css #webdev

6 min read

Daniel Pertu

Oct 14

Our viewfinder has no shutter button, and the four rectangles dimming the rest of the frame are not a hole in an overlay

#reactnative #a11y #mobile #typescript

5 min read

Daniel Pertu

Oct 14

Reanimated's layout animations left a verdict word painted over the badge beneath it, so our app animates maxHeight to 100000 instead

#reactnative #animation #a11y #typescript

5 min read

Daniel Pertu

Oct 14

A user replied "thank you very much" and we received our own email back underneath it

#typescript #webdev #email #node

6 min read

Daniel Pertu

Oct 14

One preference, eight surfaces: where a UK/US spelling toggle actually has to reach

#nextjs #react #typescript #webdev

6 min read

Daniel Pertu

Oct 14

172 stems and 105 one-off words: converting our content to American spelling without a blanket rule

#typescript #testing #webdev #i18n

5 min read

Daniel Pertu

Oct 13

The word influencer is allowed in nine fields and banned in the body, and one test knows which is which

#typescript #seo #testing #webdev

1

6 min read

Daniel Pertu

Oct 13

Stripe is the seller of record in 27 countries and nowhere else, and one rejected field must never block a sale

#stripe #saas #typescript #webdev

5 min read

Daniel Pertu

Oct 13

866 lines of CSS, not one hex code, and every single value declared twice

#css #webdev #design #a11y

6 min read

Daniel Pertu

Oct 13

Our admin panel answers 404 to every signed-in account that is not on a hardcoded list

#nextjs #security #typescript #webdev

4 min read

Daniel Pertu

Oct 13

Our structured data is two script tags, and the rule is that no node may claim more than the page shows

#seo #nextjs #typescript #webdev

4 min read

Daniel Pertu

Oct 13

Two paths announce our pages to Bing, and one Redis hash keeps them from announcing twice

#webdev #seo #nextjs #redis

5 min read

Daniel Pertu

Oct 13

167 tests across twelve files, and 80 of them are about money

#testing #typescript #webdev #nextjs

1

5 min read

Daniel Pertu

Oct 13

I published our build command at 10:19 and deleted half of it at 13:20

#devops #postgres #nextjs #webdev

4 min read

Daniel Pertu

Oct 13

Every page of our marketing site ships a notification system, and the marketing site never notifies anybody

#react #nextjs #webdev #typescript

4 min read

Daniel Pertu

Oct 13

25 toast call sites, one message slot, and a tab that is forbidden to unmount

#react #typescript #electron #ux

6 min read

Daniel Pertu

Oct 13

Fifteen chart colours and no charts, and a theme class that repeats :root line for line

#css #tailwindcss #webdev #nextjs

5 min read

Daniel Pertu

Oct 13

One page on our site unmounts its FAQ answers, the other twenty-nine keep them in the DOM, and only one of those choices was deliberate

#webdev #seo #a11y #react

6 min read

Daniel Pertu

Oct 13

A stranger cannot reach our 404 page, and three of our four error screens report to nobody

#nextjs #webdev #typescript #react

5 min read

Daniel Pertu

Oct 13

Our content plan said 63 pages, its own tables said 65, and the live sitemap agrees with the tables

#seo #nextjs #webdev #typescript

5 min read

Daniel Pertu

Oct 13

A failed payment still gets Premium, and the column that stops a retried Stripe event from undoing a cancellation

#stripe #postgres #typescript #webdev

1

5 min read

Daniel Pertu

Oct 13

Three Sentry inits of four lines each on the website, and deliberately none in the desktop app

#nextjs #typescript #privacy #webdev

5 min read

Daniel Pertu

Oct 13

The permission dialog is product copy, and app.json is where a privacy promise becomes enforceable

#reactnative #mobile #privacy #security

1

2

5 min read

Daniel Pertu

Oct 13

Our maintenance switch is 14 lines, and the interesting part is the three API routes it refuses to turn off

#nextjs #webdev #typescript #devops

6 min read

Daniel Pertu

Oct 13

Next.js merges metadata from the root down, and three of the fields must never be inherited

#nextjs #seo #webdev #typescript

5 min read

Daniel Pertu

Oct 13

Googlebot is quoted £20, a visitor in Amsterdam is quoted €24.99, and the regex that decides is twelve words long

#nextjs #seo #webdev #typescript

6 min read

Daniel Pertu

Oct 13

We deleted our finished videos and shipped the layers instead: rendering transparent overlays with Remotion

#react #typescript #animation #ffmpeg

5 min read

Daniel Pertu

Oct 13

Our contact form has no captcha, and the four things standing in its place

#webdev #nextjs #typescript #security

6 min read

Daniel Pertu

Oct 13

Forwarding your support email turns off Gmail's spam filter, so we had to put one back

#node #security #webdev #devops

5 min read

Daniel Pertu

Oct 13

One boolean, three different answers: the maintenance switch for an app that is half marketing site

#nextjs #webdev #typescript #seo

1

4 min read

Daniel Pertu

Oct 13

Screenshotting every screen in the app found four bugs that no test was ever going to catch

#css #react #typescript #webdev

1

5 min read

Daniel Pertu

Oct 13

Two numbers moved in opposite directions and the copy on four surfaces updated itself

#typescript #nextjs #webdev #saas

5 min read

Daniel Pertu

Oct 13

Two ordered regex tables instead of a user-agent library, because the label only has to survive a support call

#typescript #webdev #node #testing

4 min read

Daniel Pertu

Oct 13

Four email campaigns that anchored on activity now anchor on signup, and the correlated subqueries went with them

#postgres #node #architecture #email

4 min read

Daniel Pertu

Oct 13

372 games, 372 card screenshots, and a manifest the build generates so a card cannot point at a missing file

#webdev #nextjs #typescript #performance

5 min read

Daniel Pertu

Oct 13

One boolean takes the app down, and the hard part was deciding which pages stay up

#webdev #nextjs #typescript #architecture

4 min read

1 Week Community Wellness Streak

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