How to use comments with i18n._()?

[iynaix]

How do I have a comment extracted into the .po file using i18n._()?

I have tried:

i18n._({
    id: "Code",
    message: "Code",
    comment: "2 or 3 letter abbreviation",
})

However, I'm getting errors such as the following:

Missing message ID, skipping.
i18n._({
  id: "Code",
  message: "Code",
  comment: "2 or 3 letter code for an event"
})

I feel like I'm missing something incredibly obvious. (not using the extraction macros in this codebase as babel macros are incompatible with NextJS swc compiler)

[timofei-iatsenko]

You can use SWC plugin.

https://github.com/lingui/swc-plugin

Using linguijs without a macros is discouraged.

[iynaix]

Wow, i was unaware that a swc plugin existed 😃, gonna use that then!

[timofei-iatsenko]

Yes, it should be promoted better. We are planing to work on that

[timofei-iatsenko]

What about your code snippet it doesn't work because it should be either:

// supposed for "manual" usage, extractor would match i18n._ call expression
i18n._("Code", {
    message: "Code",
    comment: "2 or 3 letter abbreviation",
})

or

// This is generated by macro, 
// note the /* i18n */ comment. Object Expression following this comment would be
// treated and extracted as a message descriptor (no matter what fn it was passed to)
i18n._(/*i18n*/{
  id: "Code",
  message: "Code",
  comment: "2 or 3 letter code for an event"
})