feat: allow default theme to be copied as custom theme

Author: yyx990803

lib/app/app.js

@@ -2,10 +2,10 @@ import Vue from 'vue'
 import Router from 'vue-router'
 import Content from './Content'
 import ClientOnly from './ClientOnly'
-import NotFound from '~notFound'
 import dataMixin from './dataMixin'
-import { routes } from './.temp/routes'
-import { siteData } from './.temp/siteData'
+import NotFound from '@notFound'
+import { routes } from '@temp/routes'
+import { siteData } from '@temp/siteData'
 
 // suggest dev server restart on base change
 if (module.hot) {

lib/app/clientEntry.js

@@ -1,6 +1,6 @@
 /* global BASE_URL, GA_ID, ga, SW_ENABLED */
 
-import './.temp/polyfill'
+import '@temp/polyfill'
 import { createApp } from './app'
 import { register } from 'register-service-worker'
 

lib/default-theme/Layout.vue

@@ -24,7 +24,7 @@ import Home from './Home.vue'
 import Navbar from './Navbar.vue'
 import Page from './Page.vue'
 import Sidebar from './Sidebar.vue'
-import { pathToComponentName, getTitle, getLang } from '../app/util'
+import { pathToComponentName, getTitle, getLang } from '@app/util'
 import { resolveSidebarItems } from './util'
 
 export default {

lib/default-theme/styles/config.styl

@@ -14,4 +14,4 @@ $MQNarrow = 959px
 $MQMobile = 719px
 $MQMobileNarrow = 419px
 
-@import '../../app/.temp/override.styl' // generated from user config
+@import '~@temp/override.styl' // generated from user config

lib/prepare.js

@@ -249,7 +249,7 @@ async function genRoutesFile ({ siteData: { pages }, sourceDir, pageFiles }) {
   }
 
   return (
-    `import Theme from '~theme'\n` +
+    `import Theme from '@theme'\n` +
     `export const routes = [${pages.map(genRoute).join(',')}\n]`
   )
 }

lib/webpack/createBaseConfig.js

@@ -34,9 +34,11 @@ module.exports = function createBaseConfig ({
   config.resolve
     .set('symlinks', true)
     .alias
-      .set('~theme', themePath)
-      .set('~notFound', notFoundPath)
-      .set('~source', sourceDir)
+      .set('@theme', themePath)
+      .set('@notFound', notFoundPath)
+      .set('@source', sourceDir)
+      .set('@app', path.resolve(__dirname, '../app'))
+      .set('@temp', path.resolve(__dirname, '../app/.temp'))
       .end()
     .extensions
       .merge(['.js', '.jsx', '.vue', '.json'])