Open Source

Simulates the behaviour of AWS services in the same process as the code under test, so a test can create a DynamoDB table or an SQS queue and read it back without Docker or a network. Twenty-five services are covered so far.

Apache 2.0

Test assertion functions written as TypeScript assertion signatures, so what an assertion has established about a value stays known to the type checker for the rest of the test.

Apache 2.0

Typed object factories for test data. The factory supplies the fields a test has no opinion about, and the test states only the ones it does.

Apache 2.0

Defines schedules, rotas and other time-based values as composable rules. It uses the standard JavaScript Temporal API for dates, times, durations and time zones.

Apache 2.0

Renders the social share images for a static site's posts from their frontmatter, including syntax-highlighted images of code. The images on this site's posts come from it.

Apache 2.0

Converts Chinese hanzi to pinyin in TypeScript, in Node or in a browser, with the dictionaries shipped inside the package. It installs a command line tool as well.

Apache 2.0 and CC BY-SA 4.0

Self-hosted web analytics for AWS sites, built from CloudFront access logs. Its collection pipeline runs inside your AWS account, and measured pages need no analytics JavaScript.

Apache 2.0

Runs third-party API simulations in the same process as the application under test. It intercepts requests to a service's production origin and routes them to a simulation object with its own domain state.

Apache 2.0

Claude Code skills packaged as installable plugins, six of them so far. Half cover how tests get written, and the rest cover data modelling and the writing around a codebase.

Apache 2.0