AugurProject/augur-ui

import { compose, find, property } from "lodash/fp";

const findFn = compose(
  property("duration"),
  find(["isDefault", true])
);

/**
 * @typedef {Object} Duration
 * @property {string} label
 * @property {number} duration
 * @property {boolean} [isDefault]
 */

/**
 * @typedef {Object} DefaultRangeAndPeriod
 * @property {number} range
 * @property {number} period
 */

/**
 * @param {Duration[]} fullRangeList
 * @param {Duration[]} fullPeriodList
 *
 * @return {DefaultRangeAndPeriod}
 */
export const getDefaultRangePeriodDuration = (
  fullRangeList,
  fullPeriodList
) => ({
  range: findFn(fullRangeList),
  period: findFn(fullPeriodList)
});