LaunchDarkly JavaScript Test Helpers

This package provides a collection of JavaScript test utilities primarily developed for internal use by LaunchDarkly's JavaScript-based SDKs (browser, Node, Electron). It is designed to support unit testing environments running on Node.js (version 12 or higher since v2.0.0), offering features like HTTP server mocks, HTTP handler utilities, async mutexes, and async helper functions for managing test expectations. While useful for general JavaScript testing, its design is tailored to LaunchDarkly's specific development needs rather than being a broad, general-purpose testing framework. The current stable version is 2.2.0. Releases appear to be ad-hoc, following an 'as-needed' cadence, with the latest significant update in April 2022. The library is implemented in TypeScript and ships with type definitions.