state-selectors

You organize Redux selectors by colocating them with their corresponding slices, creating modules like todo.selectors.js that export get functions to derive view data directly from the state shape and simplify consumption.

The best way to handle cross-slice selectors is through composition, combining pass-through accessors and memoized projections across multiple saga slices to derive complex view data while keeping UI components lean.

You create memoized selectors by exporting get functions next to each slice that derive lifecycle states like isContentLoading and isActionLoading from the raw saga state shape, applying optional memoized projections for performance.

Yes, colocated selectors support cross-slice composition, allowing you to combine derived data from multiple saga slices using pass-through accessors and memoized projections to satisfy complex view requirements.

Colocating selectors with Redux slices keeps state-derived views next to their source for clarity and reuse, hiding complex state shapes from components and simplifying both UI code and tests through pass-through accessors.

Memoization is optional for pass-through selectors in Redux, but applying memoized projections becomes valuable when deriving complex data across single or multiple saga slices to prevent unnecessary component re-renders.