instIn

Usage: instIn(start, end)

Returns a spec that validates insts in the range from start (inclusive) to end (exclusive).

Source

Example:

const s = require('speculaas');

// spec for all dates in 2017
s.def('::2017', s.instIn(new Date('2017'), new Date('2018')));

s.isValid('::2017', new Date('2017-04-27'));
// true