ngrx-wieder

Integrates directly with NgRx reducers using createUndoRedoReducer or wrapReducer, allowing undo-redo to be added with minimal changes to existing code, as shown in the usage examples where standard NgRx patterns are maintained.

Offers fine-grained control over undoable actions and merge rules via allowedActionTypes and mergeRules, enabling tailored behavior for scenarios like sliders or drawing tools, detailed in the configuration and consecutive changes sections.

Supports separate undo-redo stacks for different state segments using segmentation, ideal for applications like multi-document editors, demonstrated with the activeDocument example and segmenter functions.

Provides selectors like selectCanUndo and selectCanRedo through createHistorySelectors, simplifying UI updates for undo-redo buttons and reducing boilerplate, as illustrated in the history selectors section.