resources/frontend/core/i18n/pluralizationRules.js
module.exports = {
/**
* @param choice {number} a choice index given by the input to $tc: `$tc('path.to.rule', choiceIndex)`
* @param choicesLength {number} an overall amount of available choices
* @returns a final choice index to select plural word by
*/
ru: function (choice, choicesLength) {
// this === VueI18n instance, so the locale property also exists here
if (choice === 0) {
return 0;
}
const teen = choice > 10 && choice < 20;
const endsWithOne = choice % 10 === 1;
if (choicesLength < 4) {
return !teen && endsWithOne ? 1 : 2;
}
if (!teen && endsWithOne) {
return 1;
}
if (!teen && choice % 10 >= 2 && choice % 10 <= 4) {
return 2;
}
return choicesLength < 4 ? 2 : 3;
},
};