/** The tri-state a select-all controller derives from its members. */
type TriState = "all" | "some" | "none";
/**
 * @description Derives a controller's tri-state from its members' checked
 * states: `"all"` when every member is checked (and there is at least one),
 * `"none"` when none are, `"some"` for a subset.
 *
 * @param checked - Each member's checked state.
 * @returns The derived tri-state.
 */
declare function deriveTriState(checked: readonly boolean[]): TriState;
/**
 * @description Initializes select-all groups in a scope: prunes groups whose
 * controllers left the DOM (disposing their effects), creates groups for new
 * controllers, and recounts existing ones. Idempotent: re-running is a no-op.
 *
 * @param scope - Root to scan; defaults to the whole document.
 */
declare function initCheckboxes(scope?: ParentNode): void;
export { deriveTriState, initCheckboxes };
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