Expert Insights: Daniel Pertu - Comprehensive Guide

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

1

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

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

1

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

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

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

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

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

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

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

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

Daniel Pertu

Oct 31

Our app has 601 serverless invocations a day and exactly one background task, and the task gets 1,800 seconds

#nextjs #node #typescript #devops

6 min read

Daniel Pertu

Oct 31

Our maintenance mode is one boolean in a TypeScript file, and it taught us that our sign-in pages are not public

#webdev #nextjs #postgres #devops

6 min read

Daniel Pertu

Oct 31

The biggest delete in our app is one line of raw SQL against a table our ORM does not manage

#postgres #database #webdev #typescript

6 min read

Daniel Pertu

Oct 31

Nineteen pages behind our login, nineteen loading.tsx files, and 159 uses of a component called Bone

#nextjs #react #webdev #a11y

6 min read

Daniel Pertu

Oct 31

Our 32 migrations are 36 KB of SQL, and the folder they live in holds 2.4 MB of JSON

#database #postgres #typescript #webdev

6 min read

Daniel Pertu

Oct 31

Five functions decide who may read a row in our app, and the answer for somebody else's row is 404

#nextjs #typescript #security #webdev

7 min read

Daniel Pertu

Oct 31

Our copy audit read 56,462 words and found no exclamation marks. The 161 strings it could not see have two.

#webdev #nextjs #ux #typescript

6 min read

Daniel Pertu

Oct 31

We write one sentence per page, and the page ships it ten times

#nextjs #seo #webdev #performance

6 min read

Daniel Pertu

Oct 31

Our example env file documents 19 variables, the code reads 15 of them, and its longest comment describes a design we deleted

#nextjs #webdev #devops #typescript

6 min read

Daniel Pertu

Oct 31

Our test suite has no DOM: 266 tests in 603 milliseconds, and the two components it checks are rendered to a string

#testing #nextjs #webdev #typescript

6 min read

Daniel Pertu

Oct 31

Our pages have been in the edge cache for twelve days, and the browser is told to cache them for zero seconds

#nextjs #webdev #performance #http

6 min read

Daniel Pertu

Oct 31

One capital letter turns /pricing into a login form, and /Sitemap.xml into a 404

#nextjs #webdev #seo #typescript

7 min read

Daniel Pertu

Oct 31

The only string in our alert email that nobody on our side wrote, and the four characters standing in front of it

#security #node #email #typescript

6 min read

Daniel Pertu

Oct 31

49 rows in our comparison tables, 13 of them say the competitor wins, and the marker is a hex colour

#seo #webdev #nextjs #contentstrategy

7 min read

Daniel Pertu

Oct 31

One installer filename lives in three files, and the version number lives in a header nothing reads

#devops #electron #node #cloudflare

6 min read

Daniel Pertu

Oct 31

Fifteen site pages, 45 hand-written links between them, and the one page nothing points at

#seo #nextjs #typescript #webdev

6 min read

Daniel Pertu

Oct 31

Three of our 24 currencies are written without decimals, and Stripe agrees about one of them

#stripe #typescript #payments #nextjs

1

7 min read

Daniel Pertu

Oct 31

Our copy rule bans the em dash, and 16 of them survived it as HTML entities

#webdev #typescript #nextjs #testing

5 min read

Daniel Pertu

Oct 31

Four regions, three flags, and a no-emoji rule that cannot see a single one of them

#reactnative #i18n #typescript #mobile

7 min read

Daniel Pertu

Oct 31

Twelve links chosen alphabetically on all 461 of our generated pages, and the 128 pages nothing else points to

#seo #nextjs #webdev #typescript

6 min read

Daniel Pertu

Oct 31

Our workspace runs 1,129 tests and the app people actually hold has 67 of them

#testing #reactnative #node #typescript

7 min read

Daniel Pertu

Oct 31

49 Pressables, 36 accessibility roles, and the two controls in our app a screen reader does not mention at all

#reactnative #a11y #mobile #typescript

7 min read

Daniel Pertu

Oct 31

Every string in our app goes through one component, and iOS is allowed to multiply it by 3.571

#reactnative #a11y #mobile #typescript

6 min read

Daniel Pertu

Oct 31

pnpm 11 holds a new release for 24 hours, and the nine waivers in our workspace file were written by pnpm, not by me

#node #expo #devops #security

6 min read

Daniel Pertu

Oct 31

369 of our 375 pages carry a meta keywords tag, 84 KB of it, for a tag Google stopped reading in 2009

#seo #nextjs #webdev #html

4 min read

Daniel Pertu

Oct 31

Our prep plan has no done button, because a checkbox would be a second opinion about what you practised

#typescript #webdev #architecture #postgres

5 min read

Daniel Pertu

Oct 31

Two sector taxonomies, 20 ids against 4, and the one word they share means the opposite thing in each

#typescript #webdev #datamodelling #ux

5 min read

Daniel Pertu

Oct 31

Five of our colour tokens were never registered as colours, so eight classes using them match nothing in the stylesheet

#tailwindcss #css #webdev #nextjs

4 min read

Daniel Pertu

Oct 31

Every read time on our blog is a word count divided by 200, and the word count is a number somebody typed

#nextjs #webdev #seo #typescript

4 min read

Daniel Pertu

Oct 31

Deleting one user row empties 21 of our 29 tables, and the delete statement names one of them

#postgres #database #webdev #typescript

1

5 min read

1 Week Community Wellness Streak

Writing Debut

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