i18next-endings-postprocessor

Introduction

In many languages, words endings depend not only on plural or singular form, but also on the number itself. For example, in Russian, the word "day" has three forms: "день", "дня" and "дней". This postprocessor allows you to use such forms in your translations.

It built on top of native Intl.PluralRules. This postprocessor allows you to use many counters in the one string. It helps to safe full sentence meaning in one key.

Getting started

npm i --save i18next-endings-postprocessor

import i18next from "i18next";
import I18nEndings from "i18next-endings-postprocessor";

const config = {
  postProcess: ["endings"],
};

i18next.use(new I18nEndings()).init(config);

Usage

[[n|zero|one|two|few|many|other]]

If your language does not have particular plural case (e.g. 'zero'), you can skip it.

JSON

{
	"key": "some string {{count}} [[{{count}}|first|second]] variant"
}

JS

i18next.t("key", { count: 1 }); // -> some string 1 first variant
i18next.t("key", { count: 2 }); // -> some string 2 second variant
i18next.t("key", { count: 5 }); // -> some string 5 second variant
i18next.t("key", { count: 20 }); // -> some string 20 second variant
i18next.t("key", { count: 21 }); // -> some string 21 second variant
i18next.t("key", { count: 22 }); // -> some string 22 second variant

// float value always returns last variant
i18next.t("key", { count: 1.1 }); // -> some string 1.1 second variant

Customize

You can set formatting function for each language. If function for language not set, will use default.

i18next.use(new I18nEndings({
	pt_BR: (num : Number, arrOfVariants: Array<String>) : String
})).init(config);