export type AcceptedType = string;
export type SelectionValue<T extends string = string> = T | Array<T> | ReadonlyArray<T> | null;
export declare const SELECTION_TYPES: readonly ["single", "single-strict", "multiple"];
export type SelectionType = (typeof SELECTION_TYPES)[number];
export type SelectionState = Set<AcceptedType>;
export type SelectionStrategy = {
    type: SelectionType;
    /**
     * Set the initial selection.
     */
    init: (values: AcceptedType[]) => SelectionState;
    /**
     * Add the provided `values` to the `selection`, respecting
     * the rules for the current strategy.
     */
    select: (values: AcceptedType[], selection: SelectionState) => SelectionState;
    /**
     * Remove the provided `values` from the `selection`, respecting
     * the rules for the current strategy.
     */
    unselect: (values: AcceptedType[], selection: SelectionState) => SelectionState;
    /**
     * Toggle the provided `values` from the `selection` (add to the selection if
     * not in the `selection`, remove from the `selection` otherwise respecting
     * the rules for the current strategy.
     */
    toggle: (values: AcceptedType[], selection: SelectionState) => SelectionState;
    /**
     * Reset `selection` to the provided value, or to and empty `Set` otherwise.
     */
    reset: (selection?: SelectionState) => SelectionState;
    /**
     * Return selection as a value, based on the `AcceptedType`.
     */
    value: (selection?: SelectionState) => SelectionValue;
};
export type SelectionStrategyCreationProps = {
    type?: SelectionType;
};