flexwork-common

Helper JS functions used for both front and back end

The front end and back end's package.json are already updated

"npm i" in /frontend and /backend to get the latest version of this in the respective projects or just "npm i flexwork-common" to skip re-checking every other module

Usage in back end:

• const fw = require("flexwork-common");
• fw.isAvailabilityHealthy

Usage in front end:

• import * as fw from "flexwork-common";
• fw.isAvailabilityHealthy

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Current contents:

canBook(availability, booking)

To be used for validation

returns true iff the booking can be made in the availability

i.e. all the days in the range [booking.startDate, booking.endDate] are in openDates(availability)

isAvailabilityHealthy(availability)

returns true iff the availability

• has both a start date and end date
• start date <= end date
• has a bookings array
• the bookings each have a start and end date
• the bookings' start date is <= end date
• the bookings are all within bounds
• the bookings are chronologically sorted
• the bookings do not overlap

isDate(obj)

returns true iff the obj is a JavaScript Date

openDates(availability)

returns a list of JavaScript Date objects, one for each day

that a booking can be made on an availability.

I.e. the set of all days of the availability - the set of days taken by its current bookings

openDatesInRange(availability, startDate, endDate)

like openDates, but can be restricted to a more limited date range

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To push changes to flexwork-common to npm:

• Change version number in package.json
• "npm login" if needed
• "npm publish"