feat: store rc file in AppData on windows

close #1957

packages/@vue/cli/lib/options.js

@@ -5,11 +5,12 @@ const cloneDeep = require('lodash.clonedeep')
 const { error } = require('@vue/cli-shared-utils/lib/logger')
 const { createSchema, validate } = require('@vue/cli-shared-utils/lib/validate')
 const { exit } = require('@vue/cli-shared-utils/lib/exit')
-const { xdgConfigPath } = require('./util/xdgConfig')
+const { xdgConfigPath, windowsConfigPath } = require('./util/rcPath')
 
 const rcPath = exports.rcPath = (
   process.env.VUE_CLI_CONFIG_PATH ||
-  xdgConfigPath('.vuerc') ||
+  xdgConfigPath() ||
+  windowsConfigPath() ||
   path.join(os.homedir(), '.vuerc')
 )
 

packages/@vue/cli/lib/util/rcPath.js

@@ -0,0 +1,37 @@
+const fs = require('fs')
+const os = require('os')
+const path = require('path')
+
+exports.xdgConfigPath = () => {
+  const xdgConfigHome = process.env.XDG_CONFIG_HOME
+  if (xdgConfigHome) {
+    const rcDir = path.join(xdgConfigHome, 'vue')
+    if (!fs.existsSync(rcDir)) {
+      fs.mkdirSync(rcDir, 0o700)
+    }
+    return path.join(rcDir, '.vuerc')
+  }
+}
+
+exports.windowsConfigPath = file => {
+  if (process.platform !== 'win32') {
+    return
+  }
+  const appData = process.env.APPDATA
+  if (appData) {
+    const rcDir = path.join(appData, 'vue')
+    if (!fs.existsSync(rcDir)) {
+      fs.mkdirSync(rcDir)
+    }
+    const rcPath = path.join(rcDir, '.vuerc')
+    // migration for < 3.0.0-rc.7
+    const oldRcFile = path.join(os.homedir(), '.vuerc')
+    if (fs.existsSync(oldRcFile)) {
+      fs.writeFileSync(rcPath, fs.readFileSync(oldRcFile))
+      const chalk = require('chalk')
+      console.log(`Detected ${chalk.cyan(`.vuerc`)} in ${chalk.cyan(path.dirname(oldRcFile))}...`)
+      console.log(`Migrated to ${chalk.cyan(rcPath)}.`)
+    }
+    return rcPath
+  }
+}

packages/@vue/cli/lib/util/xdgConfig.js

@@ -1,15 +0,0 @@
-const fs = require('fs')
-const path = require('path')
-
-exports.xdgConfigPath = (file) => {
-  const xdgConfigHome = process.env.XDG_CONFIG_HOME
-  if (xdgConfigHome) {
-    const rcDir = path.join(xdgConfigHome, 'vue')
-    if (!fs.existsSync(rcDir)) {
-      fs.mkdirSync(rcDir, 0o700)
-    }
-    return path.join(rcDir, file)
-  }
-
-  return undefined
-}