Computer Algebra System in TypeScript
JavaScript port of tiktoken
lookup country name given international phone number e164 format.
Hermione plugin for extend assertView command.
Test if a value is an array-like object containing only negative numbers.
Commonly used JavaScript Functions
Runtime A/B testing for AI variants in production - traffic splitting, decision strategies, and ClickHouse-backed outcome tracking
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Returns true if any element of a sequence satisfies a condition.
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A nothing-new-under-the-sun testing framework.
A protocol for declarative mocking of HTTP requests
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Utilities for tests in other packages
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Fast, intuitive, asynchronous interactions for anything that runs in a browser.
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Check if a value is a WeakMap. ```javascript const lolite = require("lolite.isweakmap") const assert = require("node:assert")
Proper Assertions for Astro Endpoints
In-memory MVA lifecycle emulator for MCP Fusion. Runs the full pipeline (Zod Input → Middlewares → Handler → Egress Firewall) without network transport. Returns structured MvaTestResult objects — zero coupling to Jest/Vitest.
Polyfill for the kv-storage Built-in Module
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Provides NodeJS Polyfills for ESBuild; similar to Webpack's "node" option.
TypeScript definitions for assert-equal-jsx