trying to get a list of months for populating into a Suitelet form. Originally tried the following, but it looks like NetSuite has done something to native

Date()

object because instead of returning month name, it's just returning a

YYYY-MM-DD

output.

for (let i = 1; i <= 12; i++) {
            monthField.addSelectOption({
                value: i,
                text: new Date(`${i}/1`).toLocaleDateString('en-US', {month: 'long'}),
                isSelected: i === currentMonth,
            });
        }

in debugger console

new Date('1/1')
Date 2001-01-01T08:00:00.000Z
new Date('1/1').toLocaleDateString('en-US', { month: 'long' })
"2001-01-01"

they are actually following the spec of Date.prototype.toLocaleString

that I was aware of. Looking at polyfill1ing (not from polyfill.io) Intl support into my scripts. What I didn't know was the spec that if Intl isn't present, then it falls back to just Y-M-d

I know not everyone likes to use third-parties, but

moment

is my go-to lib for dates, and this is as simple as

moment.months()

which gives you locale-specific month names

I actually was thinking of moment, but seeing as it's depreciated in favor of more modern standards, was looking for a modern alternative, but might have to fall back to it given NetSuite's own implementation of JS, just to make sure all the expected functionality is there

In a production JS app, I'd move away from moment for one of its successors instantly. In NetSuite, none of the successors work (the last time I tried), but moment still does.

i've used luxon in a couple projects with success but i still use moment too so ¯\_(ツ)_/¯

I was actually looking at Luxon, but it read to me like it inherits browser's own

Intl

library, which when running inside SuiteScript wouldn't work. I could be wrong though.

the new libraries use the Intl related apis, so there is a lot of missing functionality

yea... what I ran into as well. I start down a rabbit hole of trying to shim/polyfill Intl, but haven't gotten anywhere yet

yeah, exactly.

you have to polyfill Intl related apis using something like https://github.com/formatjs/date-time-format-timezone

thanks. including moment.js is my current fallback, so at least I'll have something