isISO8601 is not a function when import a subset

[tphan18]

Description

const isISO8601 = require('validator/lib/isISO8601');
isISO8601('2016-01-20T12:31:12.123Z') // TypeError: isISO8601 is not a function

validator.isISO8601(str) works fine.

[hkwu]

Make sure to do require('...').default if you aren't using import.

[galtalmor]

It doesn't work with import either for this validator, unlike other validators.

[tphan18]

I haven't tested the solution from @hkwu, but if it works, the behavior is not consistent with the rests.

[hkwu]

Hmm, yeah must be the add-module-exports plugin. Personally think it shouldn't be doing this at all, now we have some files that require .default and some that don't.

[chriso]

So this appears to be due to multiple exports in the same ./src/lib/ file.

Notice how the isEmail validator doesn't export its regular expressions, while isISO8601 does:

> require('validator/lib/isEmail')
[Function: isEmail]
> require('validator/lib/isISO8601')
{ iso8601: /^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$/,
  default: [Function] }

It's an easy fix.