From 5849b157351764ec218c5f5c96e1e9013e03f746 Mon Sep 17 00:00:00 2001
From: Haoqun Jiang <haoqunjiang@gmail.com>
Date: Thu, 25 Jul 2019 16:00:03 +0800
Subject: [PATCH 1/2] fix: `vue add` should install prerelease versions for
 official plugins

---
 packages/@vue/cli/lib/add.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/packages/@vue/cli/lib/add.js b/packages/@vue/cli/lib/add.js
index 251fd9d1ca..2943889d61 100644
--- a/packages/@vue/cli/lib/add.js
+++ b/packages/@vue/cli/lib/add.js
@@ -1,11 +1,13 @@
 const chalk = require('chalk')
+const semver = require('semver')
 const invoke = require('./invoke')
 
 const PackageManager = require('./util/ProjectPackageManager')
 const {
   log,
   error,
-  resolvePluginId
+  resolvePluginId,
+  isOfficialPlugin
 } = require('@vue/cli-shared-utils')
 const confirmIfGitDirty = require('./util/confirmIfGitDirty')
 
@@ -21,7 +23,13 @@ async function add (pluginName, options = {}, context = process.cwd()) {
   log()
 
   const pm = new PackageManager({ context })
-  await pm.add(packageName)
+
+  const cliVersion = require('../package.json').version
+  if (isOfficialPlugin(packageName) && semver.prerelease(cliVersion)) {
+    await pm.add(`${packageName}@next`)
+  } else {
+    await pm.add(packageName)
+  }
 
   log(`${chalk.green('✔')}  Successfully installed plugin: ${chalk.cyan(packageName)}`)
   log()

From b63345a3fb16e48ab2b6c4a2bfa5c51dbaee0af7 Mon Sep 17 00:00:00 2001
From: Haoqun Jiang <haoqunjiang@gmail.com>
Date: Thu, 25 Jul 2019 16:59:16 +0800
Subject: [PATCH 2/2] fix: use ^${cliVersion} instead of next tag

imagine the case that we're rolling out v5 alpha while the user is still
on v4 alpha/beta/rc
---
 packages/@vue/cli/lib/add.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/@vue/cli/lib/add.js b/packages/@vue/cli/lib/add.js
index 2943889d61..8482f7a907 100644
--- a/packages/@vue/cli/lib/add.js
+++ b/packages/@vue/cli/lib/add.js
@@ -26,7 +26,7 @@ async function add (pluginName, options = {}, context = process.cwd()) {
 
   const cliVersion = require('../package.json').version
   if (isOfficialPlugin(packageName) && semver.prerelease(cliVersion)) {
-    await pm.add(`${packageName}@next`)
+    await pm.add(`${packageName}@^${cliVersion}`)
   } else {
     await pm.add(packageName)
   }