Daniel Pertu - DEV Community

Daniel Pertu

Oct 25

Our free-licence script prints a token on every run, and in a dry run that token is either real or imaginary

#node #postgres #typescript #webdev

6 min read

Daniel Pertu

Oct 25

Our comparison pages tell the reader September and the crawler October, and both dates are true

#seo #webdev #nextjs #contentstrategy

6 min read

Daniel Pertu

Oct 25

One include glob pulls our other server's source into the Next.js type check, and the two compilers disagree on ten options

#typescript #nextjs #node #webdev

5 min read

Daniel Pertu

Oct 25

A 60 character title budget, a 12 character brand suffix, and the 2 pages out of 507 where the brand loses

#nextjs #seo #typescript #testing

8 min read

Daniel Pertu

Oct 25

The three pages on our site that show a price are the three with no font preload in the head

#nextjs #performance #webdev #typescript

4 min read

Daniel Pertu

Oct 25

Our Tailwind config is a v3 file that v4 reads through one @config line, and I measured which of its 80 lines reach the browser

#tailwindcss #css #webdev #nextjs

6 min read

Daniel Pertu

Oct 25

Fourteen call sites make the metadata for 76 pages, and every canonical URL names production

#nextjs #seo #webdev #typescript

6 min read

Daniel Pertu

Oct 25

Our IndexNow submitter reads the live sitemap rather than importing it, and the one engine we care about ignores the whole protocol

#seo #node #typescript #webdev

6 min read

Daniel Pertu

Oct 25

Our free tier is five scans a month and the phone counts them, because the server is not allowed to know how many you did

#privacy #reactnative #architecture #typescript

8 min read

Daniel Pertu

Oct 25

cache() memoises a function, not a query, so our two wrappers over one row by id fetched it twice

#nextjs #react #postgres #performance

5 min read

Daniel Pertu

Oct 25

Our plan limits have no counter column, the rows are the count, and a refund is a DELETE

#postgres #typescript #database #saas

7 min read

Daniel Pertu

Oct 25

One mug, four files: our favicon.ico is a PNG, and two of the SVGs differ by a line that changes nothing

#webdev #nextjs #svg #html

5 min read

Daniel Pertu

Oct 25

Our crawler check is one regex with "bot" in it, so a phone called Cubot is quoted pounds

#seo #nextjs #typescript #webdev

5 min read

Daniel Pertu

Oct 25

Our next/image config is an allowlist: 16 widths and 5 qualities answer 200, everything else answers 400

#nextjs #performance #webdev #javascript

4 min read

Daniel Pertu

Oct 25

One caveat sentence, three wordings of it in our code, and the only test asserts the five words all three share

#typescript #architecture #reactnative #webdev

8 min read

Daniel Pertu

Oct 25

Our email preview is not a likeness of the email, it is the email, and a determinism test says so

#typescript #testing #email #webdev

7 min read

Daniel Pertu

Oct 25

Exact-match says 2 duplicated sentences in 628 across our 67 pages, and the real answer is 5 of 6 paragraphs on one page

#seo #webdev #nextjs #contentstrategy

5 min read

Daniel Pertu

Oct 25

Our skip link is the first tab stop on 375 pages and its target exists on four of them

#a11y #webdev #nextjs #html

4 min read

Daniel Pertu

Oct 25

The price in our desktop app is a string the server hands it, and the one case where it has no string is a 409

#typescript #electron #stripe #webdev

6 min read

Daniel Pertu

Oct 25

Our website names who each recipe suits and our app names nobody, from the same 38 recipes in the same package

#typescript #reactnative #nextjs #architecture

9 min read

Daniel Pertu

Oct 25

All 67 of our content pages pass the prop, so the fallback behind it has never rendered, and it is a copy of the homepage

#react #nextjs #webdev #seo

5 min read

Daniel Pertu

Oct 25

Our maintenance switch is one boolean, and the only alert email that survives it is the one allowed to throw

#nextjs #typescript #electron #webdev

6 min read

Daniel Pertu

Oct 25

65 calls go through our toast helper and 36 skip it, and the two paths format errors differently

#react #webdev #typescript #a11y

5 min read

Daniel Pertu

Oct 25

One punctuation mark is banned from our copy, three unrelated tests enforce it, and the app with most of the words in it is not one of them

#testing #node #typescript #webdev

8 min read

Daniel Pertu

Oct 25

We publish one email address and label sixteen, because a catch-all means every local part arrives

#email #webdev #nextjs #typescript

7 min read

Daniel Pertu

Oct 25

Reduce Motion stops every CSS animation on our site and none of the JavaScript ones

#webdev #a11y #react #performance

5 min read

Daniel Pertu

Oct 25

Send the link again has five limits on it, and only two of them are in the browser

#nextjs #react #security #webdev

6 min read

Daniel Pertu

Oct 25

One file is copied into five repositories, and the only line allowed to differ is the one naming which app you are reading

#typescript #seo #nextjs #architecture

8 min read

Daniel Pertu

Oct 25

Two search fields in one form, one searching as you type and one waiting until you ask

#react #nextjs #webdev #a11y

7 min read

Daniel Pertu

Oct 25

Our sign-in page has 0 autocomplete attributes, and the password field is not in the HTML at all

#webdev #react #nextjs #a11y

1

4 min read

Daniel Pertu

Oct 24

605 label words are a promise our test suite enforces, and the sharper half of it asserts silence

#testing #node #typescript #architecture

8 min read

Daniel Pertu

Oct 24

461 of our URLs are one dynamic segment at the site root, and a single line stops it answering every typo on the domain

#nextjs #seo #typescript #webdev

7 min read

Daniel Pertu

Oct 24

One function defines not-found for our scanner, our capture gate and our reward check, because three copies of it drifted

#postgres #typescript #architecture #webdev

7 min read

Daniel Pertu

Oct 24

Our search endpoint returns three fields, and its WHERE clause is copied out of an index definition on purpose

#postgres #nextjs #typescript #reactnative

2

8 min read

Daniel Pertu

Oct 24

Our healthy shopping row is never green, and its off switch is an empty array

#reactnative #ux #a11y #typescript

1

7 min read

Daniel Pertu

Oct 24

Four step clocks in our job runner, and the one over a model call was shorter than the model client's own retry

#node #typescript #architecture #webdev

7 min read

Daniel Pertu

Oct 24

Our coverage report says 76%, and it is measuring 122 statements out of a 1,009 file library

#testing #javascript #webdev #vitest

5 min read

Daniel Pertu

Oct 24

Our 375 pages share two social cards, and the one on the 99 most shareable pages is 8000 pixels wide

#webdev #seo #nextjs #html

4 min read

Daniel Pertu

Oct 24

A config comment claimed it was saving bundle size, and the only thing it saved was my stack traces

#javascript #webdev #monitoring #nextjs

3 min read

Daniel Pertu

Oct 24

Two Sentry issues a millisecond apart, both of them empty, and the filter had to be written twice

#javascript #webdev #monitoring #debugging

1

4 min read

Daniel Pertu

Oct 24

window.localStorage can be null, which is how our signup flow handed people an error screen

#javascript #webdev #react #debugging

1

4 min read

Daniel Pertu

Oct 24

Our Node version lived in a dashboard, and the repo could not tell you what we deploy on

#node #webdev #devops #nextjs

4 min read

Daniel Pertu

Oct 23

Four of our 24 shadcn components are imported by nothing, and that folder is the only code in the repo with no semicolons

#react #typescript #tailwindcss #webdev

7 min read

Daniel Pertu

Oct 23

BLEED = 48, copied into seven files: the hairlines on our marketing pages are gradients, and one of them drew a grey rectangle

#css #tailwindcss #webdev #frontend

6 min read

Daniel Pertu

Oct 23

Deleting a campaign keeps its conversations, with no campaign, no address and no emails left in them

#postgres #database #privacy #typescript

7 min read

Daniel Pertu

Oct 23

Our database can hold a Stripe customer id that Stripe has never heard of, and four pieces of code answer that differently

#stripe #nextjs #typescript #webdev

1

6 min read

Daniel Pertu

Oct 23

Our daily cleanup job refreshes before it deletes, and that order is the only reason the 30 day rule holds

#postgres #node #nextjs #database

7 min read

Daniel Pertu

Oct 23

Two Postgres error codes are the only ones we retry, and the retry sits underneath a React cache()

#nextjs #postgres #react #webdev

6 min read

Daniel Pertu

Oct 23

Our setup wizard writes nothing to the database until the last step, and the Back button still works

#react #nextjs #typescript #ux

8 min read

Daniel Pertu

Oct 23

Eleven phrases our prices may never be described with, 28 tests from seven it() calls, and the one price on the site the test cannot see

#testing #vitest #nextjs #webdev

6 min read

Daniel Pertu

Oct 23

Twelve SELECTs for the list and six filtered counts for the page, and the only shared code is three SQL fragments

#postgres #typescript #nextjs #sql

7 min read

Daniel Pertu

Oct 23

Our homepage promises a CSV export, and the feature page for it says nothing has to be exported

#webdev #nextjs #refactoring #seo

6 min read

Daniel Pertu

Oct 23

Next 16 writes a rules file into our repo when it detects an agent, and 13 environment variables are the trigger

#nextjs #ai #node #typescript

7 min read

Daniel Pertu

Oct 23

Two Postgres clients, one database, and the only option they agree on is the one the pooler forces

#postgres #nextjs #serverless #webdev

6 min read

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

1

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

1

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

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