| Blog | https://wickstrom.tech |
| Projects | https://github.com/owickstrom/ |
| Quickstrom | https://quickstrom.io/ |
We're hiring for Bombadil! Come work with me on the future of browser testing — specification languages and temporal logic, JS runtimes, bundlers, and WASM frontends in Rust, and lots and lots of property-based testing. This is onsite in London.
Apply here: https://antithesis.com/company/careers/?ashby_jid=88f9ee26-c86f-4625-9ac2-cb268678044a
Bombadil 0.3.2 is out, with support for importing local modules and external packages, and importing JSON, text, and binary files!
I've just used this to import Hunspell dictionaries in a spec, checking websites for typos using nspell. This in itself might become a community package you can just import into your Bombadil specs. More broadly, with 0.3.2 we can start reusing action generators and properties.
Read the manual here: https://antithesishq.github.io/bombadil/
The first release of Bombadil is out!
https://github.com/antithesishq/bombadil/releases/tag/v0.2.0
It's still very experimental and bare bones, but we now have a specification language in TS/JS, and statically linked executables in the release package.
1. npm install @antithesishq/bombadil
2. write a spec.ts (see project README for examples)
3. bombadil test https://example.com
spec.ts
4. PROFIT!
today is Bach day
new Goldberg Variations just dropped: https://open.spotify.com/album/29g6SUPE0ucUazmZLwALTs
11/10
https://github.com/antithesishq/bombadil/blob/main/src/specification/ltl_equivalences.rs
merged, if anyone is curious!
getting close to the first release of Bombadil; this week brought a new TypeScript specification language with LTL operators, a std library of default properties, and a first stab at nice error messages
also added examples to the readme:
Property-based testing for web UIs, autonomously exploring and validating correctness properties, finding harder bugs earlier - antithesishq/bombadil
Today I’m announcing and open-sourcing the Bombadil project — a brand new property-based browser testing framework.
https://wickstrom.tech/2026-01-28-there-and-back-again-from-quickstrom-to-bombadil.html
UPDATE:
After 18 months of sitting out a noncompete, I'm finally back working on generative testing. Not only that, I'm joining Antithesis next week, and I can't wait to build testing technology with such a deeply technical and committed group.
Everything in its right place.
