cron-parser usage example

cron-parser.ts

import parser from 'cron-parser';

export function extractScheduledResourceTriggerTime(
 scheduleExpression: string
): number {
  const parsedExpression = parser.parseExpression(scheduleExpression, {
    utc: true,
    iterator: true,
  });
  const previousDateScheduledResourceRan = parsedExpression.prev();
  const utcTimestampInMilliseconds = new Date(
    previousDateScheduledResourceRan.value.toString()
  ).getTime();

  return utcTimestampInMilliseconds;
}