liebao-developApi/node_modules/vitepress/dist/client/theme-default/composables/nav.js

import { computed } from 'vue';
import { useData, useRoute } from 'vitepress';
export function useLanguageLinks() {
    const { site, localePath, theme } = useData();
    return computed(() => {
        const langs = site.value.langs;
        const localePaths = Object.keys(langs);
        // one language
        if (localePaths.length < 2) {
            return null;
        }
        const route = useRoute();
        // intentionally remove the leading slash because each locale has one
        const currentPath = route.path.replace(localePath.value, '');
        const candidates = localePaths.map((localePath) => ({
            text: langs[localePath].label,
            link: `${localePath}${currentPath}`
        }));
        const selectText = theme.value.selectText || 'Languages';
        return {
            text: selectText,
            items: candidates
        };
    });
}