Test if an object's own property is readable.
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Superfast runtime validators with only one line
lookup country name given international phone number e164 format.
Test if a value is a 2-dimensional ndarray-like object containing double-precision floating-point numbers.
Check if the runtime is a web worker.
Test if a value is an array containing a circular reference.
Utilities for tests in other packages
IInterface.Id is found on functions representing interfaces and stores the symbol identifying the interface.
INHERIT open estate data standard — 31 JSON Schemas, 14 common types, 5 asset categories, 21 jurisdiction extensions, and reference data for structured estate planning interchange across 7 legal traditions
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tests wether two objects are equal (shallow).
Polyfill for the kv-storage Built-in Module
soft assertions
Runtime A/B testing for AI variants in production - traffic splitting, decision strategies, and ClickHouse-backed outcome tracking
Test if a value is an array-like object containing only negative numbers.
Computer Algebra System in TypeScript
Detect native Int32Array support.
Fast, intuitive, asynchronous interactions for anything that runs in a browser.
A nothing-new-under-the-sun testing framework.
Returns true if any element of a sequence satisfies a condition.
A tool for generating and managing TypeScript type definitions efficiently.
License Text Normalizer
Necto's assertion utility.