Ember CLI Flash Messages

ember-cli-flash is a robust Ember addon that provides a simple yet highly configurable solution for displaying flash messages (e.g., growl, toast notifications) within Ember applications. It includes both a `flashMessages` service for managing messages and a `FlashMessage` component for rendering them. Currently in stable version 7.0.0, the library generally follows a yearly major release cycle, with minor and patch updates in between, aligning with Ember's LTS and general release schedule. Key differentiators include its promise-aware API, out-of-the-box styling support for frameworks like Bootstrap and Foundation, and comprehensive TypeScript definitions allowing for custom message fields with generics, making it type-safe and adaptable to complex notification requirements. It integrates well with modern Ember tooling, requiring Ember.js v4.12 or above and Embroider or ember-auto-import v2.