我正在尝试在复杂的自定义monorepo上为Vue设置Jest单元测试,而i18n出现问题,因为我将其用于应用程序的翻译管理。
给出以下用于实例化i18n的代码:
import Vue from "vue"
import VueI18n from "vue-i18n"
import { getTranslations, addMissingKey, getLocaleFromBrowser, SUPPORTED_LOCALE } from "./api"
import { dateTimeFormats } from "./formats"
Vue.use(VueI18n)
export const defaultLocale = getLocaleFromBrowser()
const i18n = new VueI18n({
locale: defaultLocale,
dateTimeFormats,
missing: (_locale: string, key: string) => {
addMissingKey(key, false)
},
fallbackLocale: SUPPORTED_LOCALE.EN,
})
export default i18n
const loadTranslations = async (locale: SUPPORTED_LOCALE) => {
i18n.mergeLocaleMessage(
locale,
await getTranslations(locale),
)
}
export const changeLocale = async (locale: SUPPORTED_LOCALE) => {
if (i18n.locale === locale) {
return
}
await loadTranslations(locale)
i18n.locale = locale
document.getElementsByTagName("html")[0].lang = locale
}
并在执行测试时出现此错误:
Test suite failed to run
TypeError: Cannot read property 'use' of undefined
14 | locale: defaultLocale,
15 | dateTimeFormats,
> 16 | missing: (_locale: string, key: string) => {
| ^
17 | addMissingKey(key, false)
18 | },
19 | fallbackLocale: SUPPORTED_LOCALE.EN,
因此,由于未知原因,vue似乎未定义,我可能会遗漏某些东西,但是我该如何模拟它以避免发生此错误?
预先感谢
答案 0 :(得分:0)
我相信您需要按如下所示将i18n添加到Vue
Vue.use(VueI18n);
const i18n = new VueI18n({
locale: "en",
messages
});
new Vue({
i18n, <==
...
render: h => h(App)
}).$mount("#app");
在您的代码中,您可以在其中初始化主vue应用。