add prettier to devdependencies

.prettierrc.js

@@ -0,0 +1,4 @@
+module.exports = {
+    singleQuote: true,
+    semi: false
+}

package-lock.json

@@ -1456,6 +1456,15 @@
         }
       }
     },
+    "@vue/eslint-config-prettier": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@vue/eslint-config-prettier/-/eslint-config-prettier-6.0.0.tgz",
+      "integrity": "sha512-wFQmv45c3ige5EA+ngijq40YpVcIkAy0Lihupnsnd1Dao5CBbPyfCzqtejFLZX1EwH/kCJdpz3t6s+5wd3+KxQ==",
+      "dev": true,
+      "requires": {
+        "eslint-config-prettier": "^6.0.0"
+      }
+    },
     "@vue/preload-webpack-plugin": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/@vue/preload-webpack-plugin/-/preload-webpack-plugin-1.1.1.tgz",
@@ -4252,6 +4261,15 @@
         }
       }
     },
+    "eslint-config-prettier": {
+      "version": "6.9.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.9.0.tgz",
+      "integrity": "sha512-k4E14HBtcLv0uqThaI6I/n1LEqROp8XaPu6SO9Z32u5NlGRC07Enu1Bh2KEFw4FNHbekH8yzbIU9kUGxbiGmCA==",
+      "dev": true,
+      "requires": {
+        "get-stdin": "^6.0.0"
+      }
+    },
     "eslint-loader": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/eslint-loader/-/eslint-loader-2.2.1.tgz",
@@ -5513,6 +5531,12 @@
       "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
       "dev": true
     },
+    "get-stdin": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-6.0.0.tgz",
+      "integrity": "sha512-jp4tHawyV7+fkkSKyvjuLZswblUtz+SQKzSWnBbii16BuZksJlU1wuBYXY75r+duh/llF1ur6oNwi+2ZzjKZ7g==",
+      "dev": true
+    },
     "get-stream": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",

package.json

@@ -20,11 +20,13 @@
     "@vue/cli-plugin-router": "^4.1.1",
     "@vue/cli-plugin-vuex": "^4.1.1",
     "@vue/cli-service": "^4.1.0",
+    "@vue/eslint-config-prettier": "^6.0.0",
     "axios": "^0.19.0",
     "babel-eslint": "^10.0.3",
     "eslint": "^5.16.0",
     "eslint-plugin-vue": "^5.0.0",
     "material-design-icons-iconfont": "^5.0.1",
+    "prettier": "^1.19.1",
     "sass": "^1.19.0",
     "sass-loader": "^8.0.0",
     "vue-cli-plugin-vuetify": "^2.0.2",
@@ -38,6 +40,8 @@
     },
     "extends": [
       "plugin:vue/essential",
+      "plugin:prettier/recommended",
+      "@vue/prettier",
       "eslint:recommended"
     ],
     "rules": {},