fix: inspect --plugins should log plugin names from webpack-merge (vuejs#2201)

haoqunjiang · yyx990803 · commit 69a4fb3ad781 · 2018-08-14T08:59:44.000-04:00
diff --git a/packages/@vue/cli-service/lib/commands/inspect.js b/packages/@vue/cli-service/lib/commands/inspect.js
@@ -24,7 +24,7 @@ module.exports = (api, options) => {
     } else if (args.rules) {
       res = config.module.rules.map(r => r.__ruleNames[0])
     } else if (args.plugins) {
-      res = config.plugins.map(p => p.__pluginName)
+      res = config.plugins.map(p => p.__pluginName || p.constructor.name)
     } else if (paths.length > 1) {
       res = {}
       paths.forEach(path => {
