🤝 Open source advocate 👽 Maintainer of @stryker_mutator 💼 Manager and trainer @InfoSupportBV 💚 Loves green energy and vegetables

Holland and Belgium
Nico Jansen retweeted
In our survey of 16,000+ npm users in January 2018, 46% of them reported using TypeScript.
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#TypeScript 3.0 is here. Awesome job by the team. An impressive release cadence they got going on! Can't wait to try out the new project references. Looks like I can do that next week as I'll be giving 3 day #TypeScript course @infosupportkc . Life's good! 🥳
🎉 TypeScript 3.0 is here!!!! 🎉 Check out project references, extractable parameter lists, easier errors, and more! blogs.msdn.microsoft.com/typ…
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Wow! #TypeScript's conditional types just became a lot more powerful (for ignorant me). You can apparently _infer generic types_. Exactly what I was looking for! stackoverflow.com/questions/…
Nico Jansen retweeted
Belated TIL: Mutation testing. It's a thing where your code is randomly changed and you then check how many of your tests fail or pass. 🔖 en.wikipedia.org/wiki/Mutati… 📦github.com/stryker-mutator/s… Very cool and relatively unknown it seems? #KillTheMutants
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They make a pretty good case. Trying it out for a while and it works pretty good. Thanks @DuckDuckGo quora.com/Why-should-I-use-D…
Nico Jansen retweeted
Woohoo my session got enough votes so I'll be talking about #mutationtesting at #dddea in September, thanks everyone 👍
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Thanks @NodeSummit, I had a great time. Tons of new ideas and tools to try out. Made some new friends. And I have an up-to-date knowledge of where we're heading with #nodejs. The future is bright. #NodeSummit
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Anyone interested in #MutationTesting near #NodeSummit, #SanFransisco? You're welcome to join. Also: Beer! 🍻
Anybody at #nodesummit like beer and want to talk about mutation testing? @_nicojs and I (and hopefully @DiegoRBaquero) are going to meet at Cellarmaker Brewing at 7:30 tonight. Join us!
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It turns out that #Java isn't ideal for all use cases of microservices. Good to know the tools and best practices for running #nodejs in the cloud. Thanks to #CloudNativeJS . Great session #NodeSummit
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A nice in-depth talk at #nodesummit about objects, prototypes, properties, proxies and more. Learned some new stuff. Thanks @tlhunter
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Takeaways from @jayphelps talk about #WebAssembly * Compiling #JS down to wasm is not what you want to do * There are languages, like TurboScript, that compile down to wasm * s-expressions can convert wasm to an AST * No direct host access yet @JohnGorter is happy! #NodeSummit
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"#npm and #nodejs didn't win because smart people came together and decided. Everyone tried out everything at once (8+ server js platforms, 8+ package managers) and decided node and npm sucked the least. We need that again!" (paraphrasing). Awesome talk @seldo #NodeSummit
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Awesome talk by @jasnell about http2 in #nodeJS. A call to action: start using it today!
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Takeaways from the #nodesummit panel discussion on security in the #NodeJS ecosystem: * Make the secure way the easy way * #stackoverflow is an insecure code marketplace * Communicate security practices
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Great start of day 2 of #nodesummit. "Developers as a malware distribution vehicle" by @guypod. About how malware can distribute via compilers
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I went memory leak hunting with @mdlavin today on the unit tests of #StrykerMutator. Turns out that #sinonjs v5 comes with it's build-in sandbox. So doing `sinon.stub()` without doing `sinon.restore()` is a memory leak.
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Hi @mdlavin, are you around later to help me make sense of a heap diff?
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Interesting talk of @vikerman of the @angular team talking about running node in production @Google. @NodeSummit
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