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ndubien

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  1. ndubien @ndubien ·

    📷 The recording of my talk at is finally out. Talk is about in applied to the world

    portal.gitnation.org/contents/

    #reactdayberlin #raceconditions #testing #javascript #react
  2. ndubien @ndubien ·

    🧙 I just published an article explaining ways to detect issues earlier. I took back the recent uncovered on Zod project and demonstrate how we could have found it...

    More on fast-check.dev/blog/2023/10/05

    #redos #vulnerability
  3. ndubien @ndubien ·

    Prototype pollution is among the most frequent sources of in the ecosystem.

    Here are some tricks to detect them earlier: fast-check.dev/blog/2023/09/21

    It references an example of such issue in . Would be glad to hear from some security experts? So any ping welcomed 🥰

    #cve #vulnerabilty #javascript #lodash
  4. ndubien @ndubien ·

    As supporting both and can be wrongly done in a thousand ways, I published why and how we achieved that on fast-check.

    This article is a follow-up of issues reported via from @bluwy and fixed thank to @AndaristRake. As making the package right was not an easy game at first glance, I thought that a how-we-do article could help other .

    Link to the article: fast-check.dev/blog/2023/09/04

    #commonjs #esmodules #javascript #opensource #publint #maintainers
  5. ndubien @ndubien ·

    So glad to be part of the speakers at @reactdayberlin this year 🥰

    Check out my badge portal.gitnation.org/badges/re!
    You can register via my badge and watch the livestream for free 🏁

    See you on December 8&12!

    #reactdayberlin
  6. ndubien @ndubien ·

    ⚡ fast-check 3.12.0 has just been released! It comes with several and added some extra capacities on float and double.

    Want to know more? See our release note, fast-check.dev/blog/2023/07/24

    If you don't know fast-check or never heard about based in , check out our blog via the link above 🥰

    #performance #optimizations #property #testing #javascript
  7. ndubien @ndubien ·
    CW: Coming soon in fast-check 🤫

    🔜 New generator coming soon within fast-check. I hope it will help people start using based testing more often to replace any references to uncontrolled values at the middle of their by leveraging powers of : seeded, shrinkable...

    #random #property #tests #pbt #npm #javascript
  8. ndubien @ndubien ·

    Just started to compare pure-rand random number generators with the ones coming within other libraries and it is blazing fast 🤯 (guess what? it is now used by @fbjest🤫)

    #prng #npm
  9. ndubien @ndubien ·

    People often wonder if is really applicable. I started a demo example showing how to leverage against exercises coming from Cracking the Coding Interview in at github.com/dubzzz/cracking-pbt

    More demos to come (race conditions..)

    #propertybased #testing #fastcheck #javascript
  10. ndubien @ndubien ·
    CW: Advent of PBT — Day 5

    🎅📅

    Wanna try with ? Everything is ready for you on codesandbox! codesandbox.io/s/advent-of-pbt

    💡 Tip: With Property Based, try to think out of the box. Don't try to generate the precise inputs expected by your functions but some data making you able to generate ins and outs at the same time. Or at least know a bit on the outs.

    👋 Today's topic: respace
    📥 Answer tonight!

    More details: dev.to/dubzzz/advent-of-pbt-20

    #adventofpbt #day5 #propertybasedtesting #fastcheck
  11. ndubien @ndubien ·

    ✅ is a powerful way to detect in code. 🎉 Opinions welcomed on my suggestion to add such tool as first-class citizen in @vitest via fast-check . More at github.com/vitest-dev/vitest/d

    #propertytesting #bugs #javascript