Test if a value is an array-like object containing only negative numbers.
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Tools for immutable values.
qTest plugin for CodeceptJS
In-memory MVA lifecycle emulator for Vurb. Runs the full pipeline (Zod Input → Middlewares → Handler → Egress Firewall) without network transport. Returns structured MvaTestResult objects — zero coupling to Jest/Vitest.
Test if a value is truthy.
JavaScript resolver validation utilities for AWS AppSync
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Validates a MongoDB ObjectID. Takes a string, returns a bool.
ESLint plugin for enforcing Arrange-Act-Assert pattern
Resolves Solana wallet names (.abc, .backpack, .bonk, .glow, .sol, and .poor) to wallet addresses and back.
A lightweight, zero-dependency TypeScript library providing type guards and assertions for safer and more readable code
C-style assert for javascript and coffee-script, in node.
Does nothing. ```javascript const lolite = require("lolite.noop") const assert = require("node:assert")
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Detect `Object.defineProperties` support.
Integrate regex operations into Ranges workflow
Base (i.e., lower-level) complex number assertion functions.
Otterspace’s EIP-4973-compliant non-transferable badge protocol helps DAOs create better incentive systems, automate permissions and enable non-financialized governance
Change assertions for the Chai assertion library
Core functions, utilities and classes for working with Node/JavaScript primitives and built-in objects, including strings, booleans, Promises, base 64, Arrays, Objects, standard AppErrors, etc.
Babel plugin for nuking bindings from imports
Allure plugin for CodeceptJS