React-intl uses the ICU message syntax, which means that if you want to specify different translations for different plural forms, it looks something like this:

You have {itemCount} {itemCount, plural, one {item} other {items}}.

(Seehttps://formatjs.io/guides/message-syntax/#plural-format)

When converted into PO format using react-intl-po, it currently looks like this:

msgid "You have {itemCount} {itemCount, plural, one {item} other {items}}"

However, in PO format, plural forms are supposed to be specified like this:

msgid "You have %1 item"msgid_plural "You have %1 items"msgstr[0] ""msgstr[1] ""

(And you can specifymsgstr[2] and so on for languages with more than 2 plural forms. Seehttp://pology.nedohodnik.net/doc/user/en_US/ch-poformat.html)

This issue also applies to translations with ordinal numbers, for which react-intl uses ICU'sselectordinal. This could also be converted to PO format. However, I propose we limit the scope of this issue to translating cardinal plurals (i.e., plurals like the example above, where react-intl uses theplural keyword). That being said, any solution we come up with should probably keep in mind that we'll want to translateselectordinal as well. I'm happy to take lead on this and come up with a PR. Let me know your thoughts!