export type PresetWithParents = {
    extends?: readonly string[];
};
/**
 * Linearize preset inheritance once, in parent-before-child order.
 *
 * A shared parent is emitted only on its first visit. This gives diamond
 * inheritance one deterministic meaning across every runtime consumer.
 */
export declare function linearizePresetIds<T extends PresetWithParents>(rootIds: readonly string[], presets: Readonly<Record<string, T>>): string[];