feat: auto install plugin

packages/vue-cli-plugin-uni/util/format-errors.js

@@ -78,9 +78,12 @@ function ModuleBuildError (err) {
       builtinCompile = 'pug/jade'
     }
     if (builtinCompile) {
+      const autoInstall = supportAutoInstallPlugin()
+      autoInstall && sendSignal(name)
       return {
         message: '预编译器错误：代码使用了' + builtinCompile +
-          '语言，但未安装相应的编译器插件，请前往插件市场安装该插件:\nhttps://ext.dcloud.net.cn/plugin?name=' + name
+          '语言，但未安装相应的编译器插件，' + (autoInstall ? '正在从' : '请前往') + '插件市场安装该插件:\nhttps://ext.dcloud.net.cn/plugin?name=' +
+          name
       }
     }
   } else if (~firstLineMessage.indexOf('Module parse failed')) {
@@ -94,6 +97,18 @@ function ModuleBuildError (err) {
   return formatMessage(err.message)
 }
 
+function supportAutoInstallPlugin () {
+  return false
+}
+
+function sendSignal (lang) {
+  if (supportAutoInstallPlugin()) {
+    return console.error(
+      `%HXRunUniAPPPluginName%${lang}%HXRunUniAPPPluginName%`
+    )
+  }
+}
+
 function ModuleNotFoundError (err) {
   const matches = err.message.match(/Can't resolve '(.*loader)'/)
   if (matches && matches.length > 0) {