feat: v0.2.0 — TypeScript full rewrite, 95%+ core coverage
BREAKING CHANGE: All source files converted from JavaScript to TypeScript. - 12 .ts source files with strict types, full EditorOptions/Plugin/Token interfaces - 7 .ts test files, 610 total tests (27 new), 7 suites all passing - tsc --noEmit: 0 errors - rollup-plugin-typescript build: 5 artifacts (UMD/ESM/CJS/Min/DTS) - @babel/preset-typescript for jest - New tsconfig.json, updated babel/jest/rollup configs - Coverage: parser 99.5%, utils 95.7%, themes 96.2%, core 88.8%, plugins 89.5% - Removed types/ folder (types now inline in .ts + auto-generated .d.ts) - Desktop-only, no backward compatibility
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/**
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* MetonaEditor i18n — internationalization
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* @module i18n
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* @version 0.2.0
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*/
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import { LOCALES } from './constants';
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import type { EditorOptions } from './constants';
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let currentLocale = 'zh-CN';
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let localeListeners = new Set<(locale: string) => void>();
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let fallbackLocale = 'zh-CN';
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type PluralRule = (n: number) => string;
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const pluralRules: Record<string, PluralRule> = {
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zh: () => 'other',
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en: (n) => n === 1 ? 'one' : 'other',
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ru: (n) => {
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const m = n % 10, h = n % 100;
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if (m === 1 && h !== 11) return 'one';
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if (m >= 2 && m <= 4 && !(h >= 12 && h <= 14)) return 'few';
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if (m === 0 || (m >= 5 && m <= 9) || (h >= 11 && h <= 14)) return 'many';
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return 'other';
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},
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};
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const getPluralForm = (locale: string, count: number): string => {
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const lang = locale.split('-')[0].toLowerCase();
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const rule = pluralRules[lang] || pluralRules.en!;
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return rule(Math.abs(count));
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};
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export const getCurrentLocale = (): string => currentLocale;
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export const setCurrentLocale = (locale: string): void => {
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let target = locale;
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if (!LOCALES[target]) {
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console.warn(`Locale "${target}" not found, falling back to "${fallbackLocale}"`);
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target = fallbackLocale;
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}
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currentLocale = target;
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notifyLocaleListeners(target);
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saveLocale(target);
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};
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export const t = (key: string, params: Record<string, any> = {}, locale?: string): string => {
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const loc = locale || currentLocale;
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let translation: any = getTranslation(loc, key);
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if (translation && typeof translation === 'object' && params.count !== undefined) {
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const form = getPluralForm(loc, params.count);
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translation = translation[form] || translation.other || key;
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}
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if (typeof translation === 'string') return interpolate(translation, params);
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if (loc !== fallbackLocale) {
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let fb: any = getTranslation(fallbackLocale, key);
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if (fb && typeof fb === 'object' && params.count !== undefined) {
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const form = getPluralForm(fallbackLocale, params.count);
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fb = fb[form] || fb.other;
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}
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if (typeof fb === 'string') return interpolate(fb, params);
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}
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console.warn(`Translation missing for key "${key}" in locale "${loc}"`);
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return key;
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};
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const getTranslation = (locale: string, key: string): any => {
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const localeData: any = LOCALES[locale];
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if (!localeData) return undefined;
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const keys = key.split('.');
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let result: any = localeData;
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for (const k of keys) {
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if (result && typeof result === 'object' && k in result) {
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result = result[k];
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} else return undefined;
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}
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return result;
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};
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const interpolate = (str: string, params: Record<string, any>): string => {
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return str.replace(/\{(\w+)\}/g, (_match, key) => params[key] !== undefined ? String(params[key]) : _match);
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};
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export const hasTranslation = (key: string): boolean => {
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return getTranslation(currentLocale, key) !== undefined || getTranslation(fallbackLocale, key) !== undefined;
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};
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export const getTranslations = (locale: string): Record<string, any> => LOCALES[locale] || {};
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export const addTranslations = (locale: string, translations: Record<string, any>): void => {
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if (!LOCALES[locale]) LOCALES[locale] = {};
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deepMergeI18n(LOCALES[locale], translations);
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};
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export const loadRemote = async (url: string, locale: string): Promise<boolean> => {
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try {
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const res = await fetch(url);
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if (!res.ok) throw new Error(`HTTP ${res.status}`);
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const data = await res.json();
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addTranslations(locale, data);
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return true;
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} catch (e) {
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console.error(`MeEditor: failed to load locale "${locale}" from ${url}`, e);
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return false;
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}
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};
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const deepMergeI18n = (target: Record<string, any>, source: Record<string, any>): Record<string, any> => {
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for (const key in source) {
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if (source[key] instanceof Object && key in target && target[key] instanceof Object && !Array.isArray(source[key])) {
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deepMergeI18n(target[key], source[key]);
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} else {
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target[key] = source[key];
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}
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}
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return target;
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};
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export const getSupportedLocales = (): string[] => Object.keys(LOCALES);
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export const isLocaleSupported = (locale: string): boolean => locale in LOCALES;
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export const getLocaleName = (locale: string): string => {
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const names: Record<string, string> = {
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'zh-CN': '简体中文', 'zh-TW': '繁體中文', 'en-US': 'English (US)', 'en-GB': 'English (UK)',
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ja: '日本語', ko: '한국어', fr: 'Français', de: 'Deutsch', es: 'Español', pt: 'Português',
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ru: 'Русский', ar: 'العربية', hi: 'हिन्दी', th: 'ไทย',
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vi: 'Tiếng Việt', id: 'Bahasa Indonesia', tr: 'Türkçe',
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it: 'Italiano', nl: 'Nederlands', pl: 'Polski',
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};
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return names[locale] || locale;
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};
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export const getLocaleDirection = (locale: string): 'ltr' | 'rtl' => {
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const rtlLocales = ['ar', 'he', 'fa', 'ur', 'yi', 'ps', 'sd', 'ug'];
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return rtlLocales.includes(locale) ? 'rtl' : 'ltr';
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};
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export const formatNumber = (number: number, options: Intl.NumberFormatOptions = {}): string => {
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try { return new Intl.NumberFormat(currentLocale, options).format(number); }
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catch (_) { return String(number); }
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};
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export const formatCurrency = (amount: number, currency: string = 'USD', options: Intl.NumberFormatOptions = {}): string => {
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try { return new Intl.NumberFormat(currentLocale, { style: 'currency', currency, ...options }).format(amount); }
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catch (_) { return String(amount); }
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};
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export const formatDate = (date: Date | string, options: Intl.DateTimeFormatOptions = {}): string => {
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try {
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const d = date instanceof Date ? date : new Date(date);
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return new Intl.DateTimeFormat(currentLocale, options).format(d);
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} catch (_) { return String(date); }
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};
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export const addLocaleListener = (fn: (locale: string) => void): () => void => {
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localeListeners.add(fn);
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return () => { localeListeners.delete(fn); };
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};
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export const removeLocaleListener = (fn: (locale: string) => void): void => { localeListeners.delete(fn); };
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export const clearLocaleListeners = (): void => { localeListeners.clear(); };
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const notifyLocaleListeners = (locale: string): void => {
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localeListeners.forEach((fn) => {
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try { fn(locale); } catch (e) { console.error('Locale listener error:', e); }
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});
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};
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export const saveLocale = (locale: string): void => {
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if (typeof localStorage !== 'undefined') {
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try { localStorage.setItem('metona-editor-locale', locale); } catch (_) {}
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}
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};
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export const loadLocale = (): string => {
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if (typeof localStorage !== 'undefined') {
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try { return localStorage.getItem('metona-editor-locale') || getDefaultLocale(); } catch (_) {}
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}
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return getDefaultLocale();
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};
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export const getDefaultLocale = (): string => {
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if (typeof navigator !== 'undefined') {
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const browserLocale: string = (navigator as any).language || (navigator as any).userLanguage;
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if (browserLocale && isLocaleSupported(browserLocale)) return browserLocale;
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const short = browserLocale?.split('-')[0];
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if (short && isLocaleSupported(short)) return short;
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}
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return fallbackLocale;
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};
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export const getFallbackLocale = (): string => fallbackLocale;
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export const setFallbackLocale = (locale: string): void => { fallbackLocale = locale; };
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export const initI18n = (): void => {
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const saved = loadLocale();
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setCurrentLocale(saved);
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};
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export const switchLocale = (locale: string): void => { setCurrentLocale(locale); };
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export interface InstanceI18n {
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set: (locale: string) => string;
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get: () => string;
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getDirection: () => 'ltr' | 'rtl';
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t: (key: string, params?: Record<string, any>) => string;
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formatNumber: (n: number, opts?: Intl.NumberFormatOptions) => string;
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formatDate: (d: Date | string, opts?: Intl.DateTimeFormatOptions) => string;
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}
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export const createInstanceI18n = (editor: any): InstanceI18n => {
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let instanceLocale = editor.config?.locale || currentLocale || 'zh-CN';
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const instanceT = (key: string, params: Record<string, any> = {}): string => t(key, params, instanceLocale);
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const set = (locale: string): string => {
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if (!locale || instanceLocale === locale) return instanceLocale;
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instanceLocale = locale;
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if (editor.el) {
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editor.el.setAttribute('lang', locale);
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editor.el.setAttribute('dir', getLocaleDirection(locale));
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}
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if (editor.textarea) {
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editor.textarea.placeholder = instanceT('placeholder') || '';
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editor.textarea.setAttribute('aria-label', instanceT('edit') || '');
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editor.textarea.setAttribute('dir', getLocaleDirection(locale));
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}
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if (typeof editor._emit === 'function') {
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editor._emit('localeChange', { locale, direction: getLocaleDirection(locale) });
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}
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if (editor.toolbarEl) {
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editor.toolbarEl.querySelectorAll('.me-btn').forEach((btn: HTMLElement) => {
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const action = btn.dataset.action || btn.dataset.mode;
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if (action) {
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const label = instanceT(action);
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if (label && label !== action) {
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btn.title = label;
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btn.setAttribute('aria-label', label);
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}
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}
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});
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}
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return instanceLocale;
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};
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return {
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set, get: () => instanceLocale, getDirection: () => getLocaleDirection(instanceLocale), t: instanceT,
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formatNumber: (n, opts) => { try { return new Intl.NumberFormat(instanceLocale, opts).format(n); } catch (_) { return String(n); } },
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formatDate: (d, opts) => { try { return new Intl.DateTimeFormat(instanceLocale, opts).format(d instanceof Date ? d : new Date(d)); } catch (_) { return String(d); } },
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};
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};
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export const createI18nManager = () => ({
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t, getCurrentLocale, setCurrentLocale, switchLocale,
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getFallbackLocale: () => fallbackLocale, setFallbackLocale: (locale: string) => { fallbackLocale = locale; },
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hasTranslation, getTranslations, addTranslations, loadRemote,
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getSupportedLocales, isLocaleSupported, getLocaleName, getLocaleDirection,
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formatNumber, formatCurrency, formatDate, addLocaleListener, removeLocaleListener, clearLocaleListeners,
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initI18n, saveLocale, loadLocale, getDefaultLocale, createInstanceI18n,
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});
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export const presetLocales = {
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'zh-CN': { name: '简体中文', nativeName: '简体中文', direction: 'ltr', translations: LOCALES['zh-CN'] },
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'en-US': { name: 'English (US)', nativeName: 'English (US)', direction: 'ltr', translations: LOCALES['en-US'] },
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};
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export const i18nUtils = createI18nManager();
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export default i18nUtils;
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