Add Latin locale

For romcal, I need to add Latin locale to dayjs. Therefore I have some questions regarding this.

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1. As Latin weekday names are composed mostly of two words (like feria secunda for Monday), should I use a command as follows?

weekdays: 'Dominica-feria secunda-feria tertia-feria quarta-feria quinta-feria sexta-Sabbato'.split('-'),

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1. There’s a subissue: in Latin, there are two different ways to name the weekdays, and a third one (e.g. used in the Roman Catholic Church) which modifies one of the former two:

A. using dies (used in the Ancient Rome):

• dies Solis;
• dies Lunae;
• dies Martis;
• dies Mercurii;
• dies Iovis;
• dies Veneris;
• dies Saturni;

B. using ferias (numbering days, starting with 1 for Sunday):

• feria prima;
• feria secunda;
• feria tertia;
• feria quarta;
• feria quinta;
• feria sexta;
• feria septima;

C. variation of the feria names, used in the RC Church (uses Dominica for Sunday and Sabbato for Saturday):

• Dominica;
• feria secunda;
• feria tertia;
• feria quarta;
• feria quinta;
• feria sexta;
• Sabbato.

Now, I need the C one only, but some other people might like some other names. If I implement this, I’d like to be as thorough as possible, so my question is: should I create three separate regions (like la-va for Vatican, i.e. the 3rd type of weekday names)? Or how else should I fix this?

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1. Weekday names: when the feria names are used, one may shorten it by using Roman numerals (e.g. feria sexta → fera VI). I presume I should use these in weekdaysShort, but I need a confirmation. Seldom, simply the Roman numerals are used (like IV), for which I could use weekdaysMin.

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1. Another thing is that in Latin, they don’t use Arabic numeral, instead they always use Roman numerals (for days of month, year, weekday numbers). I suggest to use Arabic numerals in time format (I don’t think that in Ancient Rome, they used time format at all and nowadays, I believe they use Arabic numerals for time instead). But how do I output Roman numerals? Does dayjs include such a converter? Should I create a custom function within la.js?

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1. As I know that you compare the output of dayjs with the output of Moment in dayjs tests, is it required to create la.js locale in Moment first?

[iamkun]

Hi, @tukusejssirs

I have made a pr https://github.com/iamkun/dayjs/pull/1053 to fix this issue.

Can you please help me test it to see if it works?

[iamkun]

@tukusejssirs Of course I know it’s an important language. However, bundle extra logic to the main pack will significantly increase the bundle size, while the use is limited. In this case like many others, we recommend implementing it as a separate self-maintained plugin to make it fully supported.