fix(@plugin-blog): fix blog layout rendering error (close: vuejs#1073)

Author: Mrminfive

package.json

@@ -13,8 +13,8 @@
     "dev": "yarn tsc && yarn workspace docs dev",
     "build": "yarn tsc && yarn workspace docs build",
     "show-help": "yarn workspace docs show-help",
-    "dev:blog": "yarn workspace blog dev",
-    "build:blog": "yarn workspace blog build",
+    "dev:blog": "yarn tsc && yarn workspace blog dev",
+    "build:blog": "yarn tsc && yarn workspace blog build",
     "register-vuepress": "lerna exec --scope vuepress -- yarn link",
     "lint": "eslint --fix packages/**/*.js packages/**/*.vue packages/**/bin/*",
     "release": "yarn --pure-lockfile && yarn tsc && node scripts/release.js",

packages/@vuepress/core/lib/plugin-api/constants.js

@@ -2,7 +2,7 @@
 
 const PLUGIN_OPTION_META_MAP = {
   // hooks
-  READY: { name: 'ready', types: [Function] },
+  READY: { name: 'ready', types: [Function], async: true },
   COMPILED: { name: 'compiled', types: [Function] },
   UPDATED: { name: 'updated', types: [Function] },
   GENERATED: { name: 'generated', types: [Function], async: true },

packages/@vuepress/plugin-blog/index.js

@@ -16,26 +16,21 @@ module.exports = (options, ctx) => {
 
   const enhancers = [
     {
-      when: ({ regularPath }) => isDirectChild(regularPath),
-      frontmatter: { layout: getLayout('Page', 'Layout') },
-      data: { type: 'page' }
+      when: ({ regularPath }) => regularPath === categoryIndexPageUrl,
+      frontmatter: { layout: getLayout('Categories', 'Page') }
     },
     {
       when: ({ regularPath }) => regularPath.startsWith('/category/'),
       frontmatter: { layout: getLayout('Category', 'Page') }
     },
     {
-      when: ({ regularPath }) => regularPath === categoryIndexPageUrl,
-      frontmatter: { layout: getLayout('Categories', 'Page') }
+      when: ({ regularPath }) => regularPath === tagIndexPageUrl,
+      frontmatter: { layout: getLayout('Tags', 'Page') }
     },
     {
       when: ({ regularPath }) => regularPath.startsWith('/tag/'),
       frontmatter: { layout: getLayout('Tag', 'Page') }
     },
-    {
-      when: ({ regularPath }) => regularPath === tagIndexPageUrl,
-      frontmatter: { layout: getLayout('Tags', 'Page') }
-    },
     {
       when: ({ regularPath }) => regularPath === '/',
       frontmatter: { layout: getLayout('Layout') }
@@ -48,7 +43,12 @@ module.exports = (options, ctx) => {
       },
       data: { type: 'post' }
     },
-    ...pageEnhancers
+    ...pageEnhancers,
+    {
+      when: ({ regularPath }) => isDirectChild(regularPath),
+      frontmatter: { layout: getLayout('Page', 'Layout') },
+      data: { type: 'page' }
+    }
   ]
 
   return {
@@ -65,7 +65,9 @@ module.exports = (options, ctx) => {
       }) => {
         if (when(pageCtx)) {
           Object.keys(frontmatter).forEach(key => {
-            rawFrontmatter[key] = rawFrontmatter[key] || frontmatter[key]
+            if (!rawFrontmatter[key]) {
+              rawFrontmatter[key] = frontmatter[key]
+            }
           })
           Object.assign(pageCtx, data)
         }
@@ -75,7 +77,7 @@ module.exports = (options, ctx) => {
     /**
      * Create tag page and category page.
      */
-    ready () {
+    async ready () {
       const { pages } = ctx
       const tagMap = {}
       const categoryMap = {}
@@ -140,7 +142,7 @@ module.exports = (options, ctx) => {
           frontmatter: { title: `${categoryName} | Category` }
         }))
       ]
-      extraPages.forEach(page => ctx.addPage(page))
+      await Promise.all(extraPages.map(page => ctx.addPage(page)))
     },
 
     /**

packages/@vuepress/theme-blog/layouts/Tags.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="container">
+    <h2>Now is Tags Page</h2>
+  </div>
+</template>