Renderer-neutral Scene2D documents with explicit application slot and image resource resolution

Native open/save file, message, confirm, and prompt dialogs over a swappable web/native backend

Connectivity status and online/offline change signals over a swappable web/native backend

Light descriptors: ambient/directional/point/spot/hemisphere/area and environment

Atlas-based multi-quad scene node and instance-buffer operations

2D and 3D cameras: projection, view, and view-projection helpers

2D narrow-phase collision — discrete contact manifolds, exact convex linear sweeps, and point/segment/ray queries

DOM renderer implementation

WebGL shader recipes for render effects (MSAA-aware post-process pipeline)

Lightweight tree-building (DOM-style) XML parser: parseXmlDocument builds an XmlElement tree, plus parseXmlAttributes and element query helpers, for atlas, plist, and sprite-sheet format files

Platform identification seam for the desktop/mobile integration suite: OS/kind/arch detection with a swappable host backend

Easing functions for animation

Plain-data concurrent statecharts with typed inputs, guarded transitions, and reported blend progress

Unicode text-segmentation seam (UAX #29 grapheme/word/sentence) over a swappable backend defaulting to the browser-native Intl.Segmenter

MovieClip display-object composition layer over @flighthq/timeline

Import/export spritesheet atlas configs from industry-standard formats (TexturePacker, Aseprite, Cocos plist, Starling, libGDX atlas)

Web host backend: installs browser-specific implementations of Flight capability seams (Canvas glyph rasterizer, DOM cursor)

Group resource loading with progress and completion signals

Mobile status bar style, visibility, and color over a swappable web/native backend

Synchronous key/value persistence over a swappable web/native backend (localStorage by default)