fix(cli-service): treat specific flags as boolean only

yyx990803 · yyx990803 · commit b1f3a4caa7d4 · 2018-08-17T09:41:53.000-04:00
close vuejs#2258
diff --git a/packages/@vue/cli-service/bin/vue-cli-service.js b/packages/@vue/cli-service/bin/vue-cli-service.js
@@ -16,7 +16,21 @@ const Service = require('../lib/Service')
 const service = new Service(process.env.VUE_CLI_CONTEXT || process.cwd())
 
 const rawArgv = process.argv.slice(2)
-const args = require('minimist')(rawArgv)
+const args = require('minimist')(rawArgv, {
+  boolean: [
+    // build
+    'modern',
+    'report',
+    'report-json',
+    'watch',
+    // serve
+    'open',
+    'copy',
+    'https',
+    // inspect
+    'verbose'
+  ]
+})
 const command = args._[0]
 
 service.run(command, args, rawArgv).catch(err => {
