Fix minify undefined

vuejs/vue-cli#3407

package.json

@@ -27,6 +27,9 @@
     "vue-template-compiler": "^2.5.21",
     "vuetify-loader": "^1.0.5"
   },
+  "resolutions": {
+    "terser": "3.14.1"
+  },
   "eslintConfig": {
     "root": true,
     "env": {

yarn.lock

@@ -6863,7 +6863,7 @@ source-map-resolve@^0.5.0:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@~0.5.9:
+source-map-support@~0.5.6:
   version "0.5.10"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.10.tgz#2214080bc9d51832511ee2bab96e3c2f9353120c"
   integrity sha512-YfQ3tQFTK/yzlGJuX8pTwa4tifQj4QS2Mj7UegOu8jAz59MqIiMGPXxQhVQiIMNzayuUSF/jEuVnfFF5JqybmQ==
@@ -7266,14 +7266,14 @@ terser-webpack-plugin@^1.1.0, terser-webpack-plugin@^1.2.1:
     webpack-sources "^1.1.0"
     worker-farm "^1.5.2"
 
-terser@^3.8.1:
-  version "3.16.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-3.16.0.tgz#04028e6e5da461d91691cedd75fa53a17f2f20d9"
-  integrity sha512-Ua8BhyibmsQBFXDZZ3Es7GASB2yFrQJr0jgAlZK1FBLbFarrHoCuMHPCro5MbX4jidcaFGiV+uTc3wxodmGjUg==
+terser@3.14.1, terser@^3.8.1:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-3.14.1.tgz#cc4764014af570bc79c79742358bd46926018a32"
+  integrity sha512-NSo3E99QDbYSMeJaEk9YW2lTg3qS9V0aKGlb+PlOrei1X02r1wSBHCNX/O+yeTRFSWPKPIGj6MqvvdqV4rnVGw==
   dependencies:
     commander "~2.17.1"
     source-map "~0.6.1"
-    source-map-support "~0.5.9"
+    source-map-support "~0.5.6"
 
 text-table@^0.2.0, text-table@~0.2.0:
   version "0.2.0"