diff --git a/package-lock.json b/package-lock.json
index ee082e5..c805860 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1459,9 +1459,7 @@
       "dependencies": {
         "@vue/cli-shared-utils": "^3.12.1",
         "babel-eslint": "^10.0.1",
-        "eslint": "^4.19.1",
         "eslint-loader": "^2.1.2",
-        "eslint-plugin-vue": "^4.7.1",
         "globby": "^9.2.0",
         "webpack": "^4.0.0",
         "yorkie": "^2.0.0"
@@ -1766,7 +1764,6 @@
         "thread-loader": "^2.1.3",
         "url-loader": "^2.2.0",
         "vue-loader": "^15.9.2",
-        "vue-loader-v16": "npm:vue-loader@^16.0.0-beta.7",
         "vue-style-loader": "^4.1.2",
         "webpack": "^4.0.0",
         "webpack-bundle-analyzer": "^3.8.0",
@@ -2170,7 +2167,6 @@
         "merge-source-map": "^1.1.0",
         "postcss": "^7.0.14",
         "postcss-selector-parser": "^6.0.2",
-        "prettier": "^1.18.2",
         "source-map": "~0.6.1",
         "vue-template-es2015-compiler": "^1.9.0"
       },
@@ -3562,7 +3558,6 @@
       "dependencies": {
         "anymatch": "~3.1.1",
         "braces": "~3.0.2",
-        "fsevents": "~2.1.2",
         "glob-parent": "~5.1.0",
         "is-binary-path": "~2.1.0",
         "is-glob": "~4.0.1",
@@ -5862,12 +5857,15 @@
       "dev": true
     },
     "node_modules/eventsource": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-1.0.7.tgz",
-      "integrity": "sha512-4Ln17+vVT0k8aWq+t/bF5arcS3EpT9gYtW66EPacdj/mAFevznsnyoHLPy2BA8gbIQeIHoPsvwmfBftfcG//BQ==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-1.1.1.tgz",
+      "integrity": "sha512-qV5ZC0h7jYIAOhArFJgSfdyz6rALJyb270714o7ZtNnw2WSJ+eexhKtE0O8LYPRsHZHf2osHKZBxGPvm3kPkCA==",
       "dev": true,
       "dependencies": {
         "original": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=0.12.0"
       }
     },
     "node_modules/evp_bytestokey": {
@@ -12380,10 +12378,8 @@
       "integrity": "sha512-aWAgTW4MoSJzZPAicljkO1hsi1oKj/RRq/OJQh2PKI2UKL04c2Bs+MBOB+BBABHTXJpf9mCwHN7ANCvYsvY2sg==",
       "dev": true,
       "dependencies": {
-        "chokidar": "^3.4.1",
         "graceful-fs": "^4.1.2",
-        "neo-async": "^2.5.0",
-        "watchpack-chokidar2": "^2.0.0"
+        "neo-async": "^2.5.0"
       },
       "optionalDependencies": {
         "chokidar": "^3.4.1",
@@ -12794,7 +12790,6 @@
         "anymatch": "^2.0.0",
         "async-each": "^1.0.1",
         "braces": "^2.3.2",
-        "fsevents": "^1.2.7",
         "glob-parent": "^3.1.0",
         "inherits": "^2.0.3",
         "is-binary-path": "^1.0.0",
@@ -19136,9 +19131,9 @@
       "dev": true
     },
     "eventsource": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-1.0.7.tgz",
-      "integrity": "sha512-4Ln17+vVT0k8aWq+t/bF5arcS3EpT9gYtW66EPacdj/mAFevznsnyoHLPy2BA8gbIQeIHoPsvwmfBftfcG//BQ==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/eventsource/-/eventsource-1.1.1.tgz",
+      "integrity": "sha512-qV5ZC0h7jYIAOhArFJgSfdyz6rALJyb270714o7ZtNnw2WSJ+eexhKtE0O8LYPRsHZHf2osHKZBxGPvm3kPkCA==",
       "dev": true,
       "requires": {
         "original": "^1.0.0"