pomeranian-durations/lib/find.js

An immutable duration library based on the ISO-8601 format for durations.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.findYears = exports.findMonths = exports.findWeeks = exports.findDays = exports.findHours = exports.findMinutes = exports.findSeconds = void 0;

var _constants = require("./constants");

var _utils = require("./_utils");

/**
 * Helpers for finding particular units in a given ISO8601 duration
 * @name default
 */
var charsBetween = function charsBetween(string, start, end) {
  return string.substring(string.lastIndexOf(start) + 1, string.lastIndexOf(end));
};

var containsTimeDesignator = function containsTimeDesignator(string) {
  return string.lastIndexOf(_constants.TIME_DESIGNATOR) === -1;
};

var extractTimeComponents = function extractTimeComponents(isoString) {
  return isoString.split(_constants.TIME_DESIGNATOR)[1] || '';
};

var extractDateComponents = function extractDateComponents(isoString) {
  if (containsTimeDesignator(isoString)) {
    return isoString.replace(_constants.DURATION_DESIGNATOR, '');
  }

  return charsBetween(isoString, _constants.DURATION_DESIGNATOR, _constants.TIME_DESIGNATOR);
};

var findUnit = function findUnit(stringComponent, unit) {
  var matchedUnit = stringComponent.toUpperCase().match(new RegExp("[+,-]?[0-9]+(\\.[0-9]+)?".concat(unit)));

  if (!matchedUnit) {
    return void 0;
  }

  return parseFloat(matchedUnit[0].slice(0, -1));
};

var buildTimeFinder = (0, _utils.curry)(function (unit, isoString) {
  if (!isoString) {
    return void 0;
  }

  var timeComponent = extractTimeComponents(isoString);
  return findUnit(timeComponent, unit);
});
var buildDateFinder = (0, _utils.curry)(function (unit, isoString) {
  if (!isoString) {
    return void 0;
  }

  var dateComponent = extractDateComponents(isoString);
  return findUnit(dateComponent, unit);
});
/**
 * Finds the seconds in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findSeconds('PT1S') // => 1
 * @example
 * findSeconds('PT1M') // => undefined
 */

var findSeconds = buildTimeFinder(_constants.UNITS.seconds);
/**
 * Finds the minutes in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findMinutes('PT1M') // => 1
 * @example
 * findMinutes('P1Y') // => undefined
 */

exports.findSeconds = findSeconds;
var findMinutes = buildTimeFinder(_constants.UNITS.minutes);
/**
 * Finds the hours in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findHours('PT1H') // => 1
 * @example
 * findHours('PT1M') // => undefined
 */

exports.findMinutes = findMinutes;
var findHours = buildTimeFinder(_constants.UNITS.hours);
/**
 * Finds the days in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findDays('P1D') // => 1
 * @example
 * findDays('PT1M') // => undefined
 */

exports.findHours = findHours;
var findDays = buildDateFinder(_constants.UNITS.days);
/**
 * Finds the weeks in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findWeeks('P1W') // => 1
 * @example
 * findWeeks('PT1M') // => undefined
 */

exports.findDays = findDays;
var findWeeks = buildDateFinder(_constants.UNITS.weeks);
/**
 * Finds the months in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findMonths('P1M') // => 1
 * @example
 * findMonths('PT1s') // => undefined
 */

exports.findWeeks = findWeeks;
var findMonths = buildDateFinder(_constants.UNITS.months);
/**
 * Finds the years in a given ISO8601 duration string.
 * @param isoString {string} an ISO8601 duration
 * @returns {(number|undefined)} number of seconds
 * @example
 * findYears('P1Y') // => 1
 * @example
 * findYears('PT1M') // => undefined
 */

exports.findMonths = findMonths;
var findYears = buildDateFinder(_constants.UNITS.years);
exports.findYears = findYears;