When you're writing tests, you often need to check that values meet certain conditions. expect gives you access to a number of "matchers" that let you validate different things.| jestjs.io
Built-in Postgres client with Bun.sql, built-in S3 object support with Bun.s3, a new text-based lockfile: bun.lock, Express is 3x faster, and a major update on Node.js compatibility.| bun.sh
Intended audience Software engineers developing interactive terminal applications. Origin Work notes published int...| blog.waleedkhan.name
Today we are excited to announce Jest 23, our largest major release to date! Together with over 100 contributors, we've shipped a ton of features and bug fixes. Thank you to everyone in the community for helping make JavaScript Testing Delightful.| jestjs.io
I want to tell you about an idea that has had a huge influence on the way that I write software. And I mean that in the literal sense: it’s changed the way that I write software; it’s re-shaped my development workflow. The idea is this: you can write programs that modify themselves. And I don’t mean macros or metaprogramming or anything fancy like that. I mean that you can write programs that edit their own source code.| ianthehenry.com
At Jane Street we use a pattern/library called “expect tests” thatmakes test-writing feel like a REPL session, or like exploratoryprogramming in a Jupyter no...| Jane Street Tech Blog