62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
// Internationalization support
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// This file is used both serverside and clientside.
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/**
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* Supported languages and their translations.
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* Each file contains an object with key-value pairs.
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*
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* Argument substitution is supported through named arguments: translate("Hello {{name}}", {name: "World"})
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*
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* Plurals and arrays are currently not supported.
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*
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* If the key is missing in the current localization, it falls back to default localization
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* and then to treating the key itself as the localization.
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*
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* @type {Object.<string, Object.<string, string>>}
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*/
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const translations = {
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// sorted alphabetically
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cs: require("./locales/cs.json"),
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de: require("./locales/de.json"),
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en: require("./locales/en.json"),
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};
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/**
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* @type {string[]}
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*/
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const locales = Object.keys(translations);
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/**
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* @type {string}
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*/
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const defaultLocale = "de";
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/**
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* @param {!string} locale name of the language to use for translation, MUST be one of the supported languages
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* @param {!string} key to translate
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* @param {!Object.<string, string>} [args] arguments to substitute into the translated key
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* @returns {string} translated string
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*/
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function translateWithLocale(locale, key, args) {
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let translation = translations[locale][key];
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if (translation === undefined) {
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console.error("Untranslated key in ", locale, ": ", key);
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if (locale != defaultLocale) {
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translation = translations[defaultLocale][key] || key;
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} else {
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translation = key;
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}
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}
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if (typeof args === "object") {
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// Do argument substitution
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for (const arg in args) {
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translation = translation.replaceAll("{{" + arg + "}}", args[arg]);
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}
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}
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return translation;
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}
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exports.defaultLocale = defaultLocale;
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exports.locales = locales;
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exports.translateWithLocale = translateWithLocale;
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