diff --git a/package-lock.json b/package-lock.json
index e2ac439..84017e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3961,6 +3961,61 @@
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+      "dependencies": {
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+        "emojis-list": "^3.0.0",
+        "json5": "^2.1.2"
+      },
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+        "node": ">=8.9.0"
+      }
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+    "node_modules/@vue/cli-plugin-babel/node_modules/schema-utils": {
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+      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
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+      "dev": true,
+      "dependencies": {
+        "@types/json-schema": "^7.0.8",
+        "ajv": "^6.12.5",
+        "ajv-keywords": "^3.5.2"
+      },
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+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      }
+    },
+    "node_modules/@vue/cli-plugin-babel/node_modules/thread-loader": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+      "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+      "dev": true,
+      "dependencies": {
+        "json-parse-better-errors": "^1.0.2",
+        "loader-runner": "^4.1.0",
+        "loader-utils": "^2.0.0",
+        "neo-async": "^2.6.2",
+        "schema-utils": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      },
+      "peerDependencies": {
+        "webpack": "^4.27.0 || ^5.0.0"
+      }
+    },
     "node_modules/@vue/cli-plugin-e2e-cypress": {
       "version": "5.0.4",
       "resolved": "https://registry.npmjs.org/@vue/cli-plugin-e2e-cypress/-/cli-plugin-e2e-cypress-5.0.4.tgz",
@@ -4037,6 +4092,61 @@
         }
       }
     },
+    "node_modules/@vue/cli-plugin-typescript/node_modules/loader-utils": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.4.tgz",
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+      "dev": true,
+      "dependencies": {
+        "big.js": "^5.2.2",
+        "emojis-list": "^3.0.0",
+        "json5": "^2.1.2"
+      },
+      "engines": {
+        "node": ">=8.9.0"
+      }
+    },
+    "node_modules/@vue/cli-plugin-typescript/node_modules/schema-utils": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
+      "integrity": "sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==",
+      "dev": true,
+      "dependencies": {
+        "@types/json-schema": "^7.0.8",
+        "ajv": "^6.12.5",
+        "ajv-keywords": "^3.5.2"
+      },
+      "engines": {
+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      }
+    },
+    "node_modules/@vue/cli-plugin-typescript/node_modules/thread-loader": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+      "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+      "dev": true,
+      "dependencies": {
+        "json-parse-better-errors": "^1.0.2",
+        "loader-runner": "^4.1.0",
+        "loader-utils": "^2.0.0",
+        "neo-async": "^2.6.2",
+        "schema-utils": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      },
+      "peerDependencies": {
+        "webpack": "^4.27.0 || ^5.0.0"
+      }
+    },
     "node_modules/@vue/cli-plugin-unit-jest": {
       "version": "5.0.4",
       "resolved": "https://registry.npmjs.org/@vue/cli-plugin-unit-jest/-/cli-plugin-unit-jest-5.0.4.tgz",
@@ -4181,6 +4291,61 @@
         }
       }
     },
+    "node_modules/@vue/cli-service/node_modules/loader-utils": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.4.tgz",
+      "integrity": "sha512-xXqpXoINfFhgua9xiqD8fPFHgkoq1mmmpE92WlDbm9rNRd/EbRb+Gqf908T2DMfuHjjJlksiK2RbHVOdD/MqSw==",
+      "dev": true,
+      "dependencies": {
+        "big.js": "^5.2.2",
+        "emojis-list": "^3.0.0",
+        "json5": "^2.1.2"
+      },
+      "engines": {
+        "node": ">=8.9.0"
+      }
+    },
+    "node_modules/@vue/cli-service/node_modules/schema-utils": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
+      "integrity": "sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==",
+      "dev": true,
+      "dependencies": {
+        "@types/json-schema": "^7.0.8",
+        "ajv": "^6.12.5",
+        "ajv-keywords": "^3.5.2"
+      },
+      "engines": {
+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      }
+    },
+    "node_modules/@vue/cli-service/node_modules/thread-loader": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+      "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+      "dev": true,
+      "dependencies": {
+        "json-parse-better-errors": "^1.0.2",
+        "loader-runner": "^4.1.0",
+        "loader-utils": "^2.0.0",
+        "neo-async": "^2.6.2",
+        "schema-utils": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 10.13.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/webpack"
+      },
+      "peerDependencies": {
+        "webpack": "^4.27.0 || ^5.0.0"
+      }
+    },
     "node_modules/@vue/cli-shared-utils": {
       "version": "5.0.4",
       "resolved": "https://registry.npmjs.org/@vue/cli-shared-utils/-/cli-shared-utils-5.0.4.tgz",
@@ -6023,9 +6188,9 @@
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-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001445.tgz",
-      "integrity": "sha512-8sdQIdMztYmzfTMO6KfLny878Ln9c2M0fc7EH60IjlP4Dc4PiCy7K2Vl3ITmWgOyPgVQKa5x+UP/KqFsxj4mBg==",
+      "version": "1.0.30001541",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001541.tgz",
+      "integrity": "sha512-bLOsqxDgTqUBkzxbNlSBt8annkDpQB9NdzdTbO2ooJ+eC/IQcvDspDc058g84ejCelF7vHUx57KIOjEecOHXaw==",
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         {
@@ -6035,6 +6200,10 @@
         {
           "type": "tidelift",
           "url": "https://tidelift.com/funding/github/npm/caniuse-lite"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
         }
       ]
     },
@@ -17752,61 +17921,6 @@
         "node": ">=0.8"
       }
     },
-    "node_modules/thread-loader": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
-      "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
-      "dev": true,
-      "dependencies": {
-        "json-parse-better-errors": "^1.0.2",
-        "loader-runner": "^4.1.0",
-        "loader-utils": "^2.0.0",
-        "neo-async": "^2.6.2",
-        "schema-utils": "^3.0.0"
-      },
-      "engines": {
-        "node": ">= 10.13.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/webpack"
-      },
-      "peerDependencies": {
-        "webpack": "^4.27.0 || ^5.0.0"
-      }
-    },
-    "node_modules/thread-loader/node_modules/loader-utils": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.2.tgz",
-      "integrity": "sha512-TM57VeHptv569d/GKh6TAYdzKblwDNiumOdkFnejjD0XwTH87K90w3O7AiJRqdQoXygvi1VQTJTLGhJl7WqA7A==",
-      "dev": true,
-      "dependencies": {
-        "big.js": "^5.2.2",
-        "emojis-list": "^3.0.0",
-        "json5": "^2.1.2"
-      },
-      "engines": {
-        "node": ">=8.9.0"
-      }
-    },
-    "node_modules/thread-loader/node_modules/schema-utils": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.1.1.tgz",
-      "integrity": "sha512-Y5PQxS4ITlC+EahLuXaY86TXfR7Dc5lw294alXOq86JAHCihAIZfqv8nNCWvaEJvaC51uN9hbLGeV0cFBdH+Fw==",
-      "dev": true,
-      "dependencies": {
-        "@types/json-schema": "^7.0.8",
-        "ajv": "^6.12.5",
-        "ajv-keywords": "^3.5.2"
-      },
-      "engines": {
-        "node": ">= 10.13.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/webpack"
-      }
-    },
     "node_modules/throat": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/throat/-/throat-6.0.1.tgz",
@@ -22595,6 +22709,43 @@
         "babel-loader": "^8.2.2",
         "thread-loader": "^3.0.0",
         "webpack": "^5.54.0"
+      },
+      "dependencies": {
+        "loader-utils": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.4.tgz",
+          "integrity": "sha512-xXqpXoINfFhgua9xiqD8fPFHgkoq1mmmpE92WlDbm9rNRd/EbRb+Gqf908T2DMfuHjjJlksiK2RbHVOdD/MqSw==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
+            "emojis-list": "^3.0.0",
+            "json5": "^2.1.2"
+          }
+        },
+        "schema-utils": {
+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
+          "integrity": "sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==",
+          "dev": true,
+          "requires": {
+            "@types/json-schema": "^7.0.8",
+            "ajv": "^6.12.5",
+            "ajv-keywords": "^3.5.2"
+          }
+        },
+        "thread-loader": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+          "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+          "dev": true,
+          "requires": {
+            "json-parse-better-errors": "^1.0.2",
+            "loader-runner": "^4.1.0",
+            "loader-utils": "^2.0.0",
+            "neo-async": "^2.6.2",
+            "schema-utils": "^3.0.0"
+          }
+        }
       }
     },
     "@vue/cli-plugin-e2e-cypress": {
@@ -22645,6 +22796,43 @@
         "ts-loader": "^9.2.5",
         "webpack": "^5.54.0",
         "yorkie": "^2.0.0"
+      },
+      "dependencies": {
+        "loader-utils": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.4.tgz",
+          "integrity": "sha512-xXqpXoINfFhgua9xiqD8fPFHgkoq1mmmpE92WlDbm9rNRd/EbRb+Gqf908T2DMfuHjjJlksiK2RbHVOdD/MqSw==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
+            "emojis-list": "^3.0.0",
+            "json5": "^2.1.2"
+          }
+        },
+        "schema-utils": {
+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
+          "integrity": "sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==",
+          "dev": true,
+          "requires": {
+            "@types/json-schema": "^7.0.8",
+            "ajv": "^6.12.5",
+            "ajv-keywords": "^3.5.2"
+          }
+        },
+        "thread-loader": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+          "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+          "dev": true,
+          "requires": {
+            "json-parse-better-errors": "^1.0.2",
+            "loader-runner": "^4.1.0",
+            "loader-utils": "^2.0.0",
+            "neo-async": "^2.6.2",
+            "schema-utils": "^3.0.0"
+          }
+        }
       }
     },
     "@vue/cli-plugin-unit-jest": {
@@ -22733,6 +22921,43 @@
         "webpack-merge": "^5.7.3",
         "webpack-virtual-modules": "^0.4.2",
         "whatwg-fetch": "^3.6.2"
+      },
+      "dependencies": {
+        "loader-utils": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.4.tgz",
+          "integrity": "sha512-xXqpXoINfFhgua9xiqD8fPFHgkoq1mmmpE92WlDbm9rNRd/EbRb+Gqf908T2DMfuHjjJlksiK2RbHVOdD/MqSw==",
+          "dev": true,
+          "requires": {
+            "big.js": "^5.2.2",
+            "emojis-list": "^3.0.0",
+            "json5": "^2.1.2"
+          }
+        },
+        "schema-utils": {
+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.3.0.tgz",
+          "integrity": "sha512-pN/yOAvcC+5rQ5nERGuwrjLlYvLTbCibnZ1I7B1LaiAz9BRBlE9GMgE/eqV30P7aJQUf7Ddimy/RsbYO/GrVGg==",
+          "dev": true,
+          "requires": {
+            "@types/json-schema": "^7.0.8",
+            "ajv": "^6.12.5",
+            "ajv-keywords": "^3.5.2"
+          }
+        },
+        "thread-loader": {
+          "version": "3.0.4",
+          "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
+          "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
+          "dev": true,
+          "requires": {
+            "json-parse-better-errors": "^1.0.2",
+            "loader-runner": "^4.1.0",
+            "loader-utils": "^2.0.0",
+            "neo-async": "^2.6.2",
+            "schema-utils": "^3.0.0"
+          }
+        }
       }
     },
     "@vue/cli-shared-utils": {
@@ -24165,9 +24390,9 @@
       }
     },
     "caniuse-lite": {
-      "version": "1.0.30001445",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001445.tgz",
-      "integrity": "sha512-8sdQIdMztYmzfTMO6KfLny878Ln9c2M0fc7EH60IjlP4Dc4PiCy7K2Vl3ITmWgOyPgVQKa5x+UP/KqFsxj4mBg==",
+      "version": "1.0.30001541",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001541.tgz",
+      "integrity": "sha512-bLOsqxDgTqUBkzxbNlSBt8annkDpQB9NdzdTbO2ooJ+eC/IQcvDspDc058g84ejCelF7vHUx57KIOjEecOHXaw==",
       "dev": true
     },
     "canvas-confetti": {
@@ -32897,43 +33122,6 @@
         "thenify": ">= 3.1.0 < 4"
       }
     },
-    "thread-loader": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/thread-loader/-/thread-loader-3.0.4.tgz",
-      "integrity": "sha512-ByaL2TPb+m6yArpqQUZvP+5S1mZtXsEP7nWKKlAUTm7fCml8kB5s1uI3+eHRP2bk5mVYfRSBI7FFf+tWEyLZwA==",
-      "dev": true,
-      "requires": {
-        "json-parse-better-errors": "^1.0.2",
-        "loader-runner": "^4.1.0",
-        "loader-utils": "^2.0.0",
-        "neo-async": "^2.6.2",
-        "schema-utils": "^3.0.0"
-      },
-      "dependencies": {
-        "loader-utils": {
-          "version": "2.0.2",
-          "resolved": "https://registry.npmjs.org/loader-utils/-/loader-utils-2.0.2.tgz",
-          "integrity": "sha512-TM57VeHptv569d/GKh6TAYdzKblwDNiumOdkFnejjD0XwTH87K90w3O7AiJRqdQoXygvi1VQTJTLGhJl7WqA7A==",
-          "dev": true,
-          "requires": {
-            "big.js": "^5.2.2",
-            "emojis-list": "^3.0.0",
-            "json5": "^2.1.2"
-          }
-        },
-        "schema-utils": {
-          "version": "3.1.1",
-          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.1.1.tgz",
-          "integrity": "sha512-Y5PQxS4ITlC+EahLuXaY86TXfR7Dc5lw294alXOq86JAHCihAIZfqv8nNCWvaEJvaC51uN9hbLGeV0cFBdH+Fw==",
-          "dev": true,
-          "requires": {
-            "@types/json-schema": "^7.0.8",
-            "ajv": "^6.12.5",
-            "ajv-keywords": "^3.5.2"
-          }
-        }
-      }
-    },
     "throat": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/throat/-/throat-6.0.1.tgz",
diff --git a/vue.config.js b/vue.config.js
index 92faad8..eeefcdb 100644
--- a/vue.config.js
+++ b/vue.config.js
@@ -5,4 +5,8 @@ module.exports = {
     // reference: https://github.com/vuejs/vue-cli/issues/979#issuecomment-372990631
     config.plugins.delete("prefetch");
   },
+  parallel: false,
+  // https://www.npmjs.com/package/@vue/cli-plugin-babel
+  // `thread-loader` is enabled by default when the machine has more than 1 CPU cores.
+  // This can be turned off by setting parallel: false in vue.config.js
 };