Essential Guide: Daniel Pertu - Comprehensive Guide

Daniel Pertu

Nov 2

Six predicates in this codebase are written twice, once in TypeScript and once in SQL

#sql #postgres #typescript #testing

7 min read

Daniel Pertu

Nov 2

Our admin panel can read the inbox and deliberately cannot answer it

#nextjs #architecture #webdev #typescript

5 min read

Daniel Pertu

Nov 2

Ten rules for writing a page, measured against the 76 pages: six a test holds, four only I do

#seo #testing #typescript #webdev

5 min read

Daniel Pertu

Nov 2

A plan's day is one bar, and a slider can only grow into room that is free

#react #typescript #ux #webdev

6 min read

Daniel Pertu

Nov 2

Every panel in our app is a Sheet, and the Dialog file the CLI wrote has zero importers

#react #a11y #typescript #webdev

5 min read

Daniel Pertu

Nov 2

Our campaign layout awaits one thing, the URL, and the header streams in behind it

#nextjs #react #typescript #webdev

6 min read

Daniel Pertu

Nov 2

Three number fields on our free tools, three different places they are clamped, and a comment promising sixteen cards from a sheet of four

#react #javascript #webdev #typescript

6 min read

Daniel Pertu

Nov 2

Our stylesheet contains no hex codes, our social card contains five, and our one email contains seven the stylesheet has never heard of

#css #design #a11y #webdev

6 min read

Daniel Pertu

Nov 2

Our site hides every scrollbar, smooth-scrolls for exactly one link, and that link does not scroll

#css #webdev #nextjs #a11y

6 min read

Daniel Pertu

Nov 2

189 exported symbols in our desktop app, 14 that nothing imports, and one of them is a feature with no button

#typescript #electron #refactoring #node

7 min read

Daniel Pertu

Nov 2

Our HTML names the same 32-character deployment id 6,052 times, and its job is to discard 456 KB of correctly cached JavaScript

#nextjs #webdev #performance #vercel

5 min read

Daniel Pertu

Nov 2

We write four version numbers to disk and read none of them, and every migration we shipped is a shape check

#electron #typescript #node #architecture

6 min read

Daniel Pertu

Nov 2

Our no-em-dash test walks five directories and passes. The repo has 454 of them, and exactly one is in a string.

#typescript #testing #webdev #writing

5 min read

Daniel Pertu

Nov 2

581 inline icons, 21 shapes between them, and 164 KB of our HTML is the attributes around the drawings

#webdev #html #a11y #performance

6 min read

Daniel Pertu

Nov 2

Our Electron UI has 37 buttons, 8 aria attributes and one Escape handler, and the modal is not a dialog

#a11y #electron #react #webdev

7 min read

Daniel Pertu

Nov 2

I fetched every URL in our sitemap. The homepage still advertises seven conditions, and the app has eight.

#seo #webdev #nextjs #testing

5 min read

Daniel Pertu

Nov 2

Two invisible characters in our Israeli price, a yen sign our font does not have, and 72 pages that all say lang=en

#webdev #nextjs #i18n #javascript

7 min read

Daniel Pertu

Nov 2

Account deletion was clearing two cache keys the app had stopped writing, and the test that caught it reads source code

#reactnative #testing #typescript #privacy

5 min read

Daniel Pertu

Nov 2

A text page on our site ships 1 MB of JavaScript, and 45 per cent of it is the error reporter

#nextjs #performance #webdev #javascript

6 min read

Daniel Pertu

Nov 2

A serving stepper that is not allowed to change the answer, and the 608 checks that say it does not

#typescript #testing #webdev #javascript

5 min read

Daniel Pertu

Nov 2

I measured the title and description of all 461 generated pages, and exactly one of them loses the brand name

#seo #nextjs #typescript #testing

5 min read

Daniel Pertu

Nov 2

We call notFound() four times and never wrote the page it lands on, and the default has zero links

#nextjs #webdev #react #ux

7 min read

Daniel Pertu

Nov 2

Our interviewer's voice is cached by a hash of the model, the voice, the instructions and the question

#ai #webdev #javascript #aws

4 min read

Daniel Pertu

Nov 2

Our privacy policy names the two fields our app sends us, and the alert request has nine

#privacy #electron #node #webdev

8 min read

Daniel Pertu

Nov 2

A whole second interview format cost us two columns, one CHECK constraint and a 312-byte migration

#postgres #database #typescript #webdev

4 min read

Daniel Pertu

Nov 2

Whisper transcribes silence as "Thanks for watching!", so we wrote a function that calls it silence

#ai #javascript #webdev #testing

4 min read

Daniel Pertu

Nov 2

Our eighth condition was 63 changed files, and the number eight is typed in none of them

#typescript #nextjs #webdev #testing

5 min read

Daniel Pertu

Nov 2

Two MediaRecorders on one stream: the audio we upload and the video that never leaves the device

#javascript #webdev #react #webapi

4 min read

Daniel Pertu

Nov 2

We deleted the part of our interview feedback that scored your face, and the privacy policy went to 1.9.0

#ai #privacy #typescript #webdev

5 min read

Daniel Pertu

Nov 2

Our interview guide cluster went from 5 pages to 14, and the new code is a three-value union

#nextjs #seo #typescript #webdev

4 min read

Daniel Pertu

Nov 1

Our 266 tests have never run anywhere but this laptop, and I found out two of them are red by running them

#testing #nextjs #devops #webdev

2

4 min read

Daniel Pertu

Nov 1

Two of our pages answer DELETE with the whole page, the other 70 answer 405, and we never wrote a line about HTTP methods

#webdev #nextjs #http #vercel

1

5 min read

Daniel Pertu

Nov 1

With JavaScript off our dark site renders white, and there is no noscript tag on any of its 72 pages

#webdev #nextjs #a11y #css

2

5 min read

Daniel Pertu

Nov 1

94 page files, zero dynamic routes, and 67 pages that write their own URL twice with nothing checking the folder

#nextjs #typescript #webdev #seo

1

4 min read

Daniel Pertu

Nov 1

635 paragraphs on our site cannot contain a link, because the page body is data and not JSX

#react #nextjs #webdev #seo

1

4 min read

Daniel Pertu

Nov 1

13.3 per cent of our HTML is class attributes, 324 distinct strings doing it, and the proof tailwind-merge works is a class that is missing

#tailwindcss #css #webdev #react

1

5 min read

Daniel Pertu

Nov 1

All 516 of our pages have exactly one h1, no skip link, and skip a heading level in exactly the same place

#a11y #webdev #html #nextjs

1

5 min read

Daniel Pertu

Nov 1

Our updater is the download page, and the one string that stops a reinstall wiping your licence is productName

#electron #javascript #node #webdev

7 min read

Daniel Pertu

Nov 1

Eight entries in one content array, 1,041 to 2,034 words each, and the optional field that has exactly one user

#typescript #webdev #seo #contentstrategy

4 min read

Daniel Pertu

Nov 1

56 pages that answer the same question, 12 to 21 percent shared text, and three of them collect every related link

#seo #webdev #typescript #architecture

1

5 min read

Daniel Pertu

Nov 1

Two of our pages are 1,065 and 1,083 words long, and the reading times under their titles say 6 minutes and 8 minutes

#webdev #seo #typescript #nextjs

1

6 min read

Daniel Pertu

Nov 1

Our only patched dependency spells its version in four places by hand, and the install checks three of them

#node #expo #devops #javascript

1

4 min read

Daniel Pertu

Nov 1

Half of our revalidatePath calls name a layout, and a streaming campaign header is the reason

#nextjs #react #webdev #performance

1

6 min read

Daniel Pertu

Nov 1

47 of our 516 pages carry the same Organization node twice, and the fix is deleting one argument

#seo #webdev #nextjs #typescript

5 min read

Daniel Pertu

Nov 1

Our desktop app has to tell us which price it showed, and a build that cannot is charged £20 instead of €24.99

#nextjs #stripe #typescript #webdev

7 min read

Daniel Pertu

Nov 1

Seventeen words for eight database values, and a dot that only pulses when work is actually running

#react #typescript #webdev #ux

6 min read

Daniel Pertu

Nov 1

Our homepage serves 24 logo elements for 12 logo files, and four more files nobody has ever requested

#nextjs #webdev #performance #html

4 min read

Daniel Pertu

Nov 1

Five things an operator can do to somebody else's account, and the audit row names the account rather than the operator

#nextjs #postgres #security #webdev

6 min read

Daniel Pertu

Nov 1

A 436-word static page on our site downloads 263 KB of JavaScript, and a quarter of it is a realtime client we never open

#nextjs #performance #webdev #react

4 min read

Daniel Pertu

Nov 1

We drop DMARC reports by looking for "dmarc" in the subject, and the spec's own subject line does not contain the word

#nextjs #webdev #security #typescript

6 min read

Daniel Pertu

Nov 1

69 of our 99 articles point at the same one, and 28 of them are never pointed at by anything

#seo #webdev #typescript #nextjs

4 min read

Daniel Pertu

Nov 1

The home screen of our app stores nothing about itself, and two of its panels can delete themselves

#nextjs #react #webdev #ux

5 min read

Daniel Pertu

Nov 1

Every page on our site but one is styled by a class called legal, and three of them are legal pages

#css #webdev #nextjs #frontend

5 min read

Daniel Pertu

Nov 1

Nine places in our app answer "you are here", and they do it with four different values of aria-current

#nextjs #a11y #react #webdev

5 min read

Daniel Pertu

Nov 1

Our two self-hosted fonts hold 222 and 230 codepoints, and the arrow on our homepage is in neither

#nextjs #webdev #css #performance

6 min read

Daniel Pertu

Nov 1

Four ways to pick a date locale in one app, and only the newest one asks the data

#javascript #webdev #i18n #nextjs

5 min read

Daniel Pertu

Nov 1

Nineteen route handlers, nine ways of proving who you are, and six answers for a stranger

#nextjs #webdev #security #api

6 min read

Daniel Pertu

Nov 1

Ten Server Actions, five form elements, and the hook argument two of them are handed by hand

#nextjs #react #webdev #typescript

4 min read

Daniel Pertu

Nov 1

Two options on our desktop notification name three platforms between them, and not one of them is macOS

#electron #javascript #typescript #webdev

5 min read

Daniel Pertu

Nov 1

We wrote force-dynamic 81 times, and the one route that forgot it behaves identically

#nextjs #webdev #typescript #performance

5 min read

1 Week Community Wellness Streak

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