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@jt-home/jt-language-tools

v1.1.0

Published

语言工具包,提供前端本地语言标识映射、Element Plus locale 解析和语言切换副作用编排。

Readme

@jt-home/jt-language-tools

语言工具包,提供前端本地语言标识映射、Element Plus locale 解析和语言切换副作用编排。

使用

import {
  DEFAULT_LANGUAGE_OPTIONS,
  getCurrentElementPlusLocale,
  getElementPlusLocale,
  resolveBrowserLanguage,
  resolveLanguageOption,
  switchLanguage,
} from "@jt-home/jt-language-tools";

包内不依赖 mfe-runtime。当前语种从哪里来由调用方决定,可以是 mfe-runtime.getLanguage(),也可以是业务 store 或其他 npm 包提供的值。 传入值应是前端本地语言标识,例如 zhenthkm

const currentLocale = getCurrentElementPlusLocale({
  getLanguage: () => getLanguageFromRuntimeOrStore(),
});

const currentOption = resolveLanguageOption(getLanguageFromRuntimeOrStore());

首次进入系统且调用方确认没有缓存语言时,可以把浏览器语言传给纯解析函数。工具包只解析,不直接读写 localStoragenavigatormfe-runtime

const result = resolveBrowserLanguage({
  browserLanguages: [...(navigator.languages || []), navigator.language].filter(Boolean),
  fallback: "ZHS",
});

localStorage.setItem("mfe-language", result.businessLanguage);
const elementPlusLocale = getElementPlusLocale(result.elementPlusLocaleCode);

浏览器语言按 BCP 47 标识解析,例如 zh-CNen-USpt-BRes-419。完整标识未命中时会按主语言兜底,例如 en-PH 解析为 en。解析结果同时包含前端语言码、runtime/后端业务语言码和 Element Plus locale 码:

resolveBrowserLanguage({ browserLanguages: ["pt-BR"] });
// {
//   localeKey: "pt",
//   businessLanguage: "POR",
//   elementPlusLocaleCode: "pt",
//   option: { key: "pt", ... }
// }

切换语言时,业务项目把自己的 i18n、store、localStorage、页面刷新等副作用通过回调传入:

switchLanguage({
  language: "en",
  setI18nLocale: (localeKey) => {
    i18n.locale.value = localeKey;
  },
  setGlobalLanguage: (localeKey) => {
    globalStore.setGlobalState("language", localeKey);
  },
  setStoredLanguage: (localeKey) => {
    localStorage.setItem("language", localeKey);
  },
  setDocumentTitle: (title) => {
    document.title = title;
    localStorage.setItem("appTitle", title);
  },
  titleMap: {
    zh: "J&T Home",
  },
  reload: () => window.location.reload(),
});