simple-body-validator/lib/ecm/lang.js

This package is inspired by Laravel validation, and aims to make body validation easier for Javascript developers

'use strict';
import { mergeDeep } from './utils/object';
import locales from './locales/index';
const lang = {
    /**
     * Default lang to be used, when lang is not specified
     */
    defaultLang: 'en',
    /**
     * Determines the locale to be used when tu current one is not available
     */
    fallbackLang: 'en',
    /**
     * The existing langs that are supported by the library
     */
    existingLangs: ['en'],
    /**
     * Store the translations passed by the user
     */
    translations: {},
    /**
     * Stores the messages that are already loaded
     */
    messages: {},
    /**
     * Stores the default messages
     */
    defaultMessages: {},
    /**
     * Stores the fallback messages
     */
    fallbackMessages: locales.en,
    /**
     * Get messages for lang
     */
    get(lang = this.defaultLang) {
        this.load(lang);
        return this.messages[lang];
    },
    /**
     * Set the translation object passed by the user
     */
    setTranslationObject(translations) {
        this.translations = translations;
        this.setDefaultLang(this.defaultLang);
    },
    /**
     * Set the default lang that should be used. And assign the default messages
     */
    setDefaultLang(lang) {
        this.defaultLang = lang;
        this.load(lang);
    },
    /**
     * Set the fallback lang to be used. And assign the fallback messages
     */
    setFallbackLang(lang) {
        this.fallbackLang = lang;
        this.fallbackMessages = locales.en;
        // check if the lang translations exist in the library and load them
        if (locales.hasOwnProperty(lang)) {
            this.fallbackMessages = mergeDeep(this.fallbackMessages, locales[lang]);
        }
        // check if the lang translations exit in the object passed by the user
        if (this.translations.hasOwnProperty(lang)) {
            this.fallbackMessages = mergeDeep(this.fallbackMessages, this.translations[lang]);
        }
    },
    /**
     * Get the default language
     */
    getDefaultLang() {
        return this.defaultLang;
    },
    /**
     * Load the messages based on the specified language
     */
    load(lang) {
        if (this.messages[lang]) {
            return;
        }
        // check if the lang translations exist in the library and load them
        if (locales.hasOwnProperty(lang)) {
            this.messages[lang] = mergeDeep(this.fallbackMessages, locales[lang]);
        }
        else {
            this.messages[lang] = mergeDeep({}, this.fallbackMessages);
        }
        // check if the lang translations exist in the object passed by the user
        if (this.translations.hasOwnProperty(lang)) {
            this.messages[lang] = mergeDeep(this.messages[lang], this.translations[lang]);
        }
    }
};
export default lang;