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import Vue from 'vue'
import { findPageForPath } from './util'
export default function dataMixin (siteData) {
prepare(siteData)
const store = new Vue({
data: { siteData }
})
if (module.hot) {
module.hot.accept('./.temp/siteData', () => {
prepare(siteData)
store.siteData = siteData
})
}
return {
computed: {
$site () {
return store.siteData
},
$localeConfig () {
const { locales = {}} = this.$site
let targetLang
let defaultLang
for (const path in locales) {
if (path === '/') {
defaultLang = locales[path]
} else if (this.$page.path.indexOf(path) === 0) {
targetLang = locales[path]
}
}
return targetLang || defaultLang || {}
},
$siteTitle () {
return this.$localeConfig.title || this.$site.title || ''
},
$title () {
const page = this.$page
const siteTitle = this.$siteTitle
const selfTitle = page.frontmatter.home ? null : (
page.frontmatter.title || // explicit title
page.title // inferred title
)
return siteTitle
? selfTitle
? (selfTitle + ' | ' + siteTitle)
: siteTitle
: selfTitle || 'VuePress'
},
$description () {
// #565 hoist description from meta
if (this.$page.frontmatter.meta) {
const descriptionMeta = this.$page.frontmatter.meta.filter(item => item.name === 'description')[0]
if (descriptionMeta) return descriptionMeta.content
}
return this.$page.frontmatter.description || this.$localeConfig.description || this.$site.description || ''
},
$lang () {
return this.$page.frontmatter.lang || this.$localeConfig.lang || 'en-US'
},
$localePath () {
return this.$localeConfig.path || '/'
},
$themeLocaleConfig () {
return (this.$site.themeConfig.locales || {})[this.$localePath] || {}
},
$page () {
return findPageForPath(
this.$site.pages,
this.$route.path
)
}
}
}
}
function prepare (siteData) {
siteData.pages.forEach(page => {
if (!page.frontmatter) {
page.frontmatter = {}
}
})
if (siteData.locales) {
Object.keys(siteData.locales).forEach(path => {
siteData.locales[path].path = path
})
}
Object.freeze(siteData)
}
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