7.1.1 • Public • Published


This package helps working with multilingual text snippets and translation mappings.

Class properties

  • DICTIONARY an object containing all of the translations
  • INCOMPLETE_TRANSLATIONS list of missing translations (keys are translation identifiers and values are lists of missing 'spoken' languages for that particular translation)
  • AVAILABLE_LANGUAGES languages that were found from the available translations of the DICTIONARY (this list is the superset of PARTLY_SUPPORTED_LANGUAGES and FULLY_SUPPORTED_LANGUAGES)
  • PARTLY_SUPPORTED_LANGUAGES if all translations don't have the same 'spoken' langugages then this list will contain the ones that aren't common across all of the available translations (the list is a subset of AVAILABLE_LANGUAGES)
  • FULLY_SUPPORTED_LANGUAGES this list contains languages that are 'spoken' by all of the available translations (the list is a subset of AVAILABLE_LANGUAGES)
  • PREFERRED_LANGUAGE default is 'en'

Class methods

  • patch(text, ...substitutions) takes any text and substitutes its placesholders with actual values
  • translate(identifier, language, ...substitutions) takes an identifier to an existing translation, fetches its text and then runs patch over it to replace placeholders with values
  • has(identifier, language) checks if a given translation exists for a particular language
  • add(identifier, text, language, override = false) adds a new translation with for given language (if a translation exists, you may use override = true to forcefully override it)


For more examples, inspect the /example folder

import Polyglot from "i18n-dict"

let library = new Polyglot()
const {has, add, patch, translate} = library // shotcuts for library.has, library.add, library.patch, library.translate

console.log(patch("Hello $1, how are you today?", "Eric")) // plain-text usage

console.log(has("Hello World Page Message", "en")) // translation doesn't exist yet

add("Hello World Page Message", "Hello $1, this is a 'Hello World' page.", "en") // add english translation
add("Hello World Page Message", "Hallo $1, das ist eine 'Hallo Welt' Seite.", "de") // add german translation

console.log(translate("Hello World Page Message", "en", "Eric")) // translated text usage

console.log(translate("Hello World Page Message", library.PREFERRED_LANGUAGE, "Eric")) // try using primary language (exactly same result as previous line because primary language is "en" by default)

console.log(library.DICTIONARY) // check dictionary contents
console.log(library.PREFERRED_LANGUAGE) // check primary language

add("Missing Translation Error", "¡Traducción '$1' por '$2' faltante!", "es") // add missing spanish translation for existing dictionary entries
add("Hello World Page Message", "Hola $1, esta es una página de 'Hola Mundo'.", "es") // add spanish translation to our new translation too

library.PREFERRED_LANGUAGE = "es" // now reset the primary language (success)

console.log(translate("Hello World Page Message", undefined, "Eric")) // setting language to 'undefined' is exactly the same as using PREFERRED_LANGUAGE (as shown in example above), this time the translated test is spanish, because we changed the primary language

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npm i i18n-dict

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  • geekhunger