I am currently in the process of implementing i18n in an existing Angular 12 application. So far everything works fine and I receive the expected "messages.xlf" file.

However, I fail to receive entries for strings passed to custom components:

<customComponent i18n-[text]="someDescription someContext@@someID" [text]="'someText'">
</customComponent>

I found this question and tried several variants to the provided solutions (switching the order within the html tag, dropping the square brackets) but the marked text is not included as trans-unit. Is there an option to have this text included without creating a separate variable in the parent component like below?

$localize`:someDescription someContext@@someId:someText`;

Thanks in advance.