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Posts about what I've learned building software, newest first. Hover over a title to read its summary.

Every post carries two marks: how it is, and how I am of it.

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Testing a large React appLandscape's frontend is the highest-scoring frontend at Canonical, with a 98.5% TQI score and 99.7% code coverage. Here's how it's tested with Vitest, MSW and Playwright.Canonical!!Checking a photo against a challengeEvery photo in Kapmo is checked against its challenge before it goes into the diary. Here's how that check works today, what happens when it can't run, and how it will change in the redesign.Kapmo!!What my first job taught me about processAt my first job, two fresh graduates merged a UK schools app's iOS and Android versions into one React Native codebase. It worked, and I learned a lot, much of it from what the project didn't have: regular reviews, tests and standups.3i Solutions!

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2026

12 NovTesting a large React appCanonicalEndgame !!
11 NovChecking a photo against a challengeKapmoEndgame !!
10 NovShipping in five languages, aloneKapmoEndgame !
9 NovWhat my first job taught me about process3i SolutionsEndgame !

Lexicon

Terms used in the posts. Inside a post they open as a card when you hover over them, so you don't have to leave the page.

API contract test Code coverage Decision model DeepL Docker Edge function Expo Fixture i18next Landscape MSW Playwright React Native React Testing Library Sentry Supabase TICS TQI Vision model Vitest