Is this value negative zero? === will lie to you

traverse and transform objects by visiting every node on a recursive walk

Pure-JS printf

Test if a double-precision floating-point numeric value is negative zero.

Join paths and globs.

二重否定をチェックするtextlint rule

Resolver for git-hosted packages

Simple and complete DOM testing utilities that encourage good testing practices.

Simple and complete React DOM testing utilities that encourage good testing practices.

A tiny, PEG-like system for building language grammars with regexes.

Custom jest matchers to test the state of the DOM

Fire events the same way the user does

Returns an array of all tabbable DOM nodes within a containing node.

A function that tells you whether a given element is overflowing its container or not. Useful for creating dropdowns and tooltips.

Delightful JavaScript Testing.

Delightful JavaScript Testing.

Fast robust predicates for computational geometry

Check if something is a negative number

ESLint plugin to follow best practices and anticipate common mistakes when writing tests with Testing Library

Negative binomial distributed pseudorandom numbers.