roosterjs-content-model-api

Format API package for the roosterjs rich-text editor (v9.51.0, stable). Provides content model-level formatting operations like toggleBold, toggleItalic, setFontSize, insertTable, and changeHeading. Part of the roosterjs 9.x ecosystem, which reworked the editor around a middle-layer Content Model for consistent behavior. Active development with frequent releases (~monthly). Differentiator: framework-independent, operates on its own content model rather than directly on DOM, enabling undo/redo and structured editing. Requires roosterjs-content-model-core and roosterjs-content-model-types as peer dependencies.