declare const PRIORITIES: readonly ["no-priority", "low", "medium", "high", "urgent"];
export type TaskPriority = (typeof PRIORITIES)[number];
export declare function isTaskPriority(v: string): v is TaskPriority;
export type TaskUpdatePatch = {
    title?: string;
    description?: string | null;
    status?: string;
    priority?: TaskPriority;
    projectId?: string;
    position?: number;
    startDate?: string | null;
    dueDate?: string | null;
    userId?: string | null;
};
/**
 * Builds the JSON body for `PUT /api/task/:id` from an existing task plus a patch.
 */
export declare function buildFullTaskUpdateBody(existing: Record<string, unknown>, patch: TaskUpdatePatch): Record<string, string | number | undefined>;
export {};