import { Failure, ProjectPlan, SchedulableIssue, Schedule, SchedulingOptions } from './api-types';
/**
 * Computes and returns a schedule for the given issues.
 *
 * @param issues issues that need to be scheduled
 * @param options scheduling options
 * @return promise that will be resolved with the schedule or rejected with a {@link Failure} containing a
 *     human-readable failure description if the problem instance is invalid (for example, has a cyclic dependency
 *     graph)
 */
export declare function scheduleUnresolved(issues: SchedulableIssue[], options: SchedulingOptions): Promise<Schedule>;
/**
 * Appends a schedule for issues with remaining effort or wait time to a project plan.
 *
 * This function does not modify any of its arguments. It returns an entirely new instance that shares no mutable data
 * with `projectPlan`.
 *
 * This function merges any issue activity in `projectPlan` that extends into an activity in `schedule` for the same
 * issue and by the same contributor. It removes all issue activities in `projectPlan` that start after the first
 * activity in `schedule` for the same issue and contributor.
 *
 * @param projectPlan the project plan, typically containing only past issue activities
 * @param schedule the (future) schedule for issues with remaining effort or wait time
 * @param divisionTimestamp Timestamp taken as end for the project plan and as beginning for the future schedule. Any
 *     project-plan activities starting after this timestamp, and any schedule activities ending before this timestamp
 *     are omitted.
 * @return a new project plan that contains the issue activities of both `projectPlan` and `schedule`
 */
export declare function appendSchedule(projectPlan: ProjectPlan, schedule: Schedule, divisionTimestamp: number): ProjectPlan | Failure;
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