import type { Feature, FeatureId } from '../types.js';
export declare function getFeature(id: FeatureId): Feature | undefined;
export declare function getAllFeatures(): Feature[];
/**
 * Resolve `requires` dependencies: auto-select required features.
 * Also validates `conflicts` - returns error message or null.
 */
export declare function resolveFeatures(selectedIds: FeatureId[]): {
    features: Feature[];
    error?: string;
};
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