import type { TaskRecord } from './schema.js';
export type ActiveTaskTarget = {
    kind: 'pr';
    value: number;
} | {
    kind: 'issue';
    value: number;
} | {
    kind: 'branch';
    value: string;
};
export declare class ActiveTaskTargetConflictError extends Error {
    readonly target: ActiveTaskTarget;
    readonly existingTaskName: string;
    readonly existingTaskStatus: 'pending' | 'running';
    constructor(target: ActiveTaskTarget, existingTaskName: string, existingTaskStatus: 'pending' | 'running');
}
type TargetTask = Pick<TaskRecord, 'pr_number' | 'issue' | 'branch' | 'merge_task' | 'merge_head_repository_url'>;
export declare function findActiveTaskTargetConflict(tasks: TaskRecord[], candidate: TargetTask): ActiveTaskTargetConflictError | undefined;
export {};
//# sourceMappingURL=activeTaskTarget.d.ts.map