Breaking regression from 3.3.0 to 3.4.0 in milliseonds

[bnb]

Describe the bug
I use Luxon for nodevu, which is a module to get data about Node.js versions. I run nightly builds of static data for the module, and they started failing a bit ago. I recently had a user reach out saying they'd realized there was an issue with Luxon. Upon pretty basic investigation, it seems there's an issue between Luxon 3.3.0 and 3.4.0 where behavior around milliseconds seemingly changed.

To Reproduce
Please share a minimal code example that triggers the problem:
I wasn't able to narrow down what in Luxon is triggering this, but I did create a minimal reproduction to trigger the issue with nodevu. I apologize for not being able to dig in more and make something more minimal, but I'm currently OOO and am limited on time to work on code.

git clone https://github.com/bnb/luxon-breaking-minor.git
npm install
npm start

That will output nodevu output that can safely be ignored and the error + stack trace.

Actual vs Expected behavior
Milliseconds management should not change in minors.

Desktop (please complete the following information):

• OS: [e.g. iOS] macOS
• Browser [e.g. Chrome 84, safari 14.0] N/A
• Luxon version [e.g. 1.25.0] 3.4.0
• Your timezone [e.g. "America/New_York"] America/New_York

[diesieben07]

Thank you for the report and apologies for the breaking bug in a minor release.
I will work on a pull request with a fix.

[diesieben07]

FYI, this was caused by #1467

It only affects invalid Durations. So the resulting value was going to be NaN anyways, which isn't useful.

[SudhirkumarRamani]

Hello @diesieben07,

Please suggest ETA on this issue if you could as it is breaking my app as well.

[diesieben07]

Hello @SudhirkumarRamani

I cannot provide you an ETA unfortunately, as I am not in charge of the release schedule. However I want to stress again that this only affects invalid Durations. If you are running into this issue, your app is not handling invalid Durations properly.

[SudhirkumarRamani]

Hello @diesieben07 ,

Could please suggest right person who can guide on ETA of the release. Also, app is failing in build stage itself with error as below:

ERROR in ./node_modules/luxon/src/duration.js 579:40

214 | Module parse failed: Unexpected token (579:40)
215 | You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
216 | | */
217 | | toMillis() {
218 | > let sum = this.values.milliseconds ?? 0;
219 | | for (let unit of reverseUnits.slice(1)) {
220 | | if (this.values?.[unit]) {
221 | @ ./node_modules/luxon/src/luxon.js 2:0-37 14:0-26:2
222 | @ ./node_modules/cron-parser/lib/date.js
223 | @ ./node_modules/cron-parser/lib/expression.js
224 | @ ./node_modules/cron-parser/lib/parser.js

[diesieben07]

@SudhirkumarRamani Your issue is different. Your issue is caused by an outdated version of Webpack, which does not support "nullish coalescing" or "optional chaning". See this Webpack issue: webpack/webpack#10227

The primary maintainer for this package is @icambron, who I have already tagged in the pull request which will fix this issue. However please note again that your issue is unrelated.

[icambron]

The fix has been released in 3.4.1