fix($core): check if layout exists (#1166)

meteorlxy · ulivz · commit 38d1deabef9b · 2019-01-08T09:41:08.000+08:00
diff --git a/packages/@vuepress/core/lib/app/components/LayoutDistributor.vue b/packages/@vuepress/core/lib/app/components/LayoutDistributor.vue
@@ -13,7 +13,10 @@ export default {
   computed: {
     layout () {
       if (this.$page.path) {
-        return this.$page.frontmatter.layout || 'Layout'
+        if (getLayoutAsyncComponent(this.$page.frontmatter.layout)) {
+          return this.$page.frontmatter.layout
+        }
+        return 'Layout'
       }
       return 'NotFound'
     }

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,10 @@ export default {`
`13`	`13`	`computed: {`
`14`	`14`	`layout () {`
`15`	`15`	`if (this.$page.path) {`
`16`		`- return this.$page.frontmatter.layout \|\| 'Layout'`
	`16`	`+ if (getLayoutAsyncComponent(this.$page.frontmatter.layout)) {`
	`17`	`+ return this.$page.frontmatter.layout`
	`18`	`+ }`
	`19`	`+ return 'Layout'`
`17`	`20`	`}`
`18`	`21`	`return 'NotFound'`
`19`	`22`	`}`