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howToTestFE

367 karmajoined ano passado
i run https://howtotestfrontend.com, a site full of resources and tips on how to test React frontend code.

i would guess most links i post are either about testing, frontend development, typescript, etc etc.

i also post interesting links i found around the web. the only site that is mine is www.howtotestfrontend.com, the rest are just ones i think might be interesting on hacker news.

Submissions

Popular Front end Libraries (2026)

howtotestfrontend.com
1 points·by howToTestFE·há 3 dias·0 comments

React Testing Interview Questions That Trip Up Engineers

howtotestfrontend.com
1 points·by howToTestFE·há 10 dias·0 comments

How to Audit a Legacy Codebase in the First Week

piechowski.io
3 points·by howToTestFE·há 14 dias·0 comments

Ask HN: What GUI/desktop app do you use to keep track of different AI sessions?

6 points·by howToTestFE·há 14 dias·6 comments

Jest/Vitest interactive course (runs in the browser)

howtotestfrontend.com
52 points·by howToTestFE·há 17 dias·13 comments

Code Smells when you get AI to write your Front end Tests

howtotestfrontend.com
3 points·by howToTestFE·há 19 dias·0 comments

The stuff nobody tells you about startup marketing

newsletter.posthog.com
3 points·by howToTestFE·há 20 dias·0 comments

Use Faker to improve the quality of your tests

howtotestfrontend.com
3 points·by howToTestFE·há 20 dias·0 comments

The Conductor Rewrite: What They Changed to Make It Fast

performance.dev
2 points·by howToTestFE·mês passado·0 comments

Reverse Engineering Linear's Sync Engine: A Detailed Study

github.com
2 points·by howToTestFE·mês passado·0 comments

How's Linear so fast? A technical breakdown

performance.dev
497 points·by howToTestFE·mês passado·236 comments

Use Faker to improve the quality of your tests

howtotestfrontend.com
1 points·by howToTestFE·há 3 meses·0 comments

Vitest vs. Jest

howtotestfrontend.com
1 points·by howToTestFE·há 4 meses·1 comments

PostHog's 404 Page

posthog.com
2 points·by howToTestFE·há 5 meses·1 comments

[untitled]

1 points·by howToTestFE·há 5 meses·0 comments

Ship Types, Not Docs

shiptypes.com
8 points·by howToTestFE·há 5 meses·6 comments

From 88 to 24 Seconds: Drop-In Replacements That Cut CI/CD Runtime by over Half

howtotestfrontend.com
2 points·by howToTestFE·há 5 meses·1 comments

OpenAI's internal documents predict $14B loss in 2026 according to report

pcgamer.com
3 points·by howToTestFE·há 6 meses·0 comments

Whenwords: An Open Source Library Without Code

github.com
2 points·by howToTestFE·há 6 meses·1 comments

Digg.com Is Back

about.digg.com
12 points·by howToTestFE·há 6 meses·10 comments

comments

howToTestFE
·há 12 dias·discuss
+1 very confusing name for another mongodb compatible db.
howToTestFE
·há 14 dias·discuss
Yep. I think there are so many new apps, when I run a `npx skills add ...` , the list of what tools (like claude code, open code, etc) to install skills in is getting larger every time I use it.

I will check it out though.
howToTestFE
·há 14 dias·discuss
100%. its a horrible code smell, and AI loves to jest.mock (or vi.mock()). (The most recent blog post on my site covers this as one of the things to look out for in AI generated tests...)

in JS (with Jest/Vitest) it is far too easy to call mock()...
howToTestFE
·há 14 dias·discuss
yup vitest is great (my default choice for new projects).

vitest browser mode is really nice too. (new-ish feature, although at this point it isn't exactly new).
howToTestFE
·há 17 dias·discuss
learn step by step the main features of both Jest and Vitest (they're very similar for most common usages) in these interactive4 lessons
howToTestFE
·há 4 meses·discuss
Blog post comparing Vitest vs Jest
howToTestFE
·há 5 meses·discuss
not sure how interesting to others, but i thought this was really cool.

(I am not affiliated with posthog at all. Just typed an incorrect address and came across it.)
howToTestFE
·há 5 meses·discuss
Has anyone got any good resources for something like this? I haven't touched C in years, and never worked on anything game-like. But it does look like a really interesting project to start something like this.
howToTestFE
·há 5 meses·discuss
tldr - `tsc` can be replaced with `tsgo`. `eslint` replaced by `oxlint`, and `prettier` replaced with `oxfmt
howToTestFE
·há 6 meses·discuss
this makes me want to play simcity again! really cool
howToTestFE
·há 6 meses·discuss
just saw this today - "whenwords, a relative time formatting library that contains no code." I wonder with AI this will become a popular thing soon that we see other 'libraries' doing... provide good specs, leave it to AI (And trust ai) to interpret
howToTestFE
·há 6 meses·discuss
ah i didn't see those. cool.
howToTestFE
·há 6 meses·discuss
If GH has an issue, it seems to always be around 4pm or 5pm GMT. I'm starting to think that i should avoid any planned production releases around this time.
howToTestFE
·há 6 meses·discuss
https://howtotestfrontend.com/blog Mostly blog posts about testing react apps, latest news about FE testing, Vitest / Jest etc.
howToTestFE
·há 7 meses·discuss
while this approach is useful, i think the diff is too small to catch a lot of bugs.

i use https://www.coderabbit.ai/ and it tends to be aware of files that aren't in the diff, and definitely can see the rest of the file your are editing (not just the lines in the diff)
howToTestFE
·há 7 meses·discuss
(not my site, just found it online - seems to be most popular/useful ask hn threads)
howToTestFE
·há 7 meses·discuss
Writing articles about how to test frontend apps (mostly react based apps) at https://howtotestfrontend.com/ Adding some final bits to some new vitest browser mode content this week hopefully.
howToTestFE
·há 7 meses·discuss
I find the jetbrains IDEs (like Webstorm) has the best UI interface for this. Selectively commit specific lines from your changes.
howToTestFE
·há 7 meses·discuss
Wow, imagine this 10 years ago. It would never have been an option.

(Maybe WB acquiring Netflix...)
howToTestFE
·há 7 meses·discuss
Same, it is a question of time.

For me, weekends only... I used to do a lot of freelance work (years ago...more than a decade ago), somehow I used to find more time then for side projects... with full time employment is is impossible to find the time.