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time-slotter

v1.0.10

Published

Generate time slots between a start and end time, with or without intervals between.

Downloads

294

Readme

TimeSlotter

license circleci

This is a small package to create a set of timeslots between two times. It can do this with time gaps in between each slot, or not.

Browser

<script src="bower_components/time-slotter/dist/time-slotter.js"></script>
<script>
  let slots = timeSlotter('10:00', '15:45', 35)
</script>

Node

npm install time-slotter

And then require it into your app like so:

let timeSlotter = require('time-slotter')

Usage

timeSlotter(startTime, endTime, slotDuration [,options])

The optional options object accepts the following properties:

| property | description | type | default | |---------------|-----------------------------------------|-------------|------- | | units | The time unit of the slot. | String | "m" | | spacer | Size of time gap between slots | Number | null | | spacerUnits | The time unit of the spacer | String | "m" | | delimiter | The character between the HH:MM:SS |String | ":" | | joinOn | Join a slot start and slot end with text| String | null | | pushToEndTime | Ensure last slot ends on the end time | Boolean | false | | includeOverflow| Include slots that bridge over the end or start time| Boolean| false|

When you enter the times, you can opt to include seconds or not. Both HH:MM:SS and HH:MM are valid, but if you do not include seconds, you cannot use seconds as the unit for either the slotDuration or the spacer.

let mySlots = timeSlotter('03:35', '10:00', 30)

An array of arrays is returned when you invoke timeSlotter. Each nested array represents a time-slot, with a start and end time. If you decide to use the joinOn options, then an array of strings is returned according to the string you chose to join on.

Example:

console.log(timeSlotter('03:35', '05:30', 25))

//	[ 	[ '03:35', '04:00' ],
// 		[ '04:00', '04:25' ],
// 		[ '04:25', '04:50' ],
// 		[ '04:50', '05:15' ]
//	]

let options = { joinOn: ' until ', delimiter: '.' }

console.log(timeSlotter('03:35', '05:30', 25, options))

//	[ 	'03.35 until 04.00',
//		'04.00 until 04.25',
//		'04.25 until 04.50',
//		'04.50 until 05.15'
//	]

If timeslots don't fit exactly between the given times, you can decide to make the last timeslot finish exactly on the end time, by setting the pushToEndTime option to true. This will push all the slots away from the start time towards the end time.

let options = { joinOn: ' - ', pushToEndTime: true }

console.log(timeSlotter('03:35', '05:30', 25, options))

// 	[ 	'03:50 - 04:15',
// 		'04:15 - 04:40',
// 		'04:40 - 05:05',
//		'05:05 - 05:30'
// 	]

Valid values for the units and spacerUnits of the options object are: h, m or s. Actually, they can be any string, as long as they begin with those letters. As explained earlier, the s value is only valid if you included seconds in the start and end times.

let options = { units: 's', spacer: 45, spacerUnits: 's' }

console.log(timeSlotter('23:58:07', '00:10:10', 110, options))

//	[ 	[ '23:58:07', '23:59:57' ],
//  		[ '00:00:42', '00:02:32' ],
//		[ '00:03:17', '00:05:07' ],
//		[ '00:05:52', '00:07:42' ]
//	]

Because of the way the time-slots are returned, it gives you the opportunity to breakdown the timeslots further into smaller partitions. For example, say you wanted three blocks of time-slots, 2hrs long each, between 09:00 and 19:30 with 70mins break between each. And let's say that each of those blocks, you want to further split into 20min time-slots with no break between them.

options = { units: 'h', spacer: 70, spacerUnits: 'm' }

let blocks = timeSlotter('09:00', '19:30', 2, options)


let partitions = blocks.reduce((acc, curr) =>
	[].concat(acc, timeSlotter(curr[0],curr[1], 20, {units: 'm'}), '<------->' ),
[])

// '<------>' was only added to show the division between blocks clearly

console.log(partitions)

// [ 	[ '09:00', '09:20' ],
//  	[ '09:20', '09:40' ],
//  	[ '09:40', '10:00' ],
//  	[ '10:00', '10:20' ],
//    	[ '10:20', '10:40' ],
// 	[ '10:40', '11:00' ],
//  	'<------->',
//  	[ '12:10', '12:30' ],
// 	[ '12:30', '12:50' ],
//  	[ '12:50', '13:10' ],
//  	[ '13:10', '13:30' ],
//  	[ '13:30', '13:50' ],
//  	[ '13:50', '14:10' ],
//  	'<------->',
//  	[ '15:20', '15:40' ],
//  	[ '15:40', '16:00' ],
//  	[ '16:00', '16:20' ],
//  	[ '16:20', '16:40' ],
//  	[ '16:40', '17:00' ],
//  	[ '17:00', '17:20' ],
//  	'<------->'
// ]

If you want to include a timeslot that overlaps either your start or end time (depending on whether you use pushToEndTime), you can set the includeOverflow property to true.

let slot = timeSlotter('12:30','12:40', 3)
console.log(slot)

//  [   [ '12:30', '12:33' ],
//      [ '12:33', '12:36' ],
//      [ '12:36', '12:39' ]  ]

slot = timeSlotter('12:30','12:40', 3, { includeOverflow: true })

console.log(slot)

//  [   [ '12:30', '12:33' ],
//      [ '12:33', '12:36' ],
//      [ '12:36', '12:39' ],
//      [ '12:39', '12:42' ]  ]