/*!
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
/**
 * Return the next run time for a task. Returns undefined if the schedule end time has been reached
 *
 * @param nextRunTime Next scheduled run of the task
 * @param lastRunTime User defined schedule end time
 */
export default function isValidNextRun(nextRunTime: number, lastRunTime?: Date): number | undefined;
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