diff --git a/package-lock.json b/package-lock.json
index 9350369..1f98838 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,6 +24,7 @@
                 "@types/supertest": "^2.0.12",
                 "@typescript-eslint/eslint-plugin": "^5.42.0",
                 "@typescript-eslint/parser": "^5.42.0",
+                "array.prototype.flatmap": "^1.3.1",
                 "eslint": "^8.0.1",
                 "eslint-import-resolver-typescript": "^3.5.2",
                 "eslint-plugin-import": "^2.26.0",
@@ -2530,6 +2531,24 @@
                 "url": "https://github.com/sponsors/ljharb"
             }
         },
+        "node_modules/array.prototype.flatmap": {
+            "version": "1.3.1",
+            "resolved": "https://registry.npmjs.org/array.prototype.flatmap/-/array.prototype.flatmap-1.3.1.tgz",
+            "integrity": "sha512-8UGn9O1FDVvMNB0UlLv4voxRMze7+FpHyF5mSMRjWHUMlpoDViniy05870VlxhfgTnLbpuwTzvD76MTtWxB/mQ==",
+            "dev": true,
+            "dependencies": {
+                "call-bind": "^1.0.2",
+                "define-properties": "^1.1.4",
+                "es-abstract": "^1.20.4",
+                "es-shim-unscopables": "^1.0.0"
+            },
+            "engines": {
+                "node": ">= 0.4"
+            },
+            "funding": {
+                "url": "https://github.com/sponsors/ljharb"
+            }
+        },
         "node_modules/array.prototype.group": {
             "version": "1.1.2",
             "resolved": "https://registry.npmjs.org/array.prototype.group/-/array.prototype.group-1.1.2.tgz",
@@ -12497,6 +12516,18 @@
                 "es-shim-unscopables": "^1.0.0"
             }
         },
+        "array.prototype.flatmap": {
+            "version": "1.3.1",
+            "resolved": "https://registry.npmjs.org/array.prototype.flatmap/-/array.prototype.flatmap-1.3.1.tgz",
+            "integrity": "sha512-8UGn9O1FDVvMNB0UlLv4voxRMze7+FpHyF5mSMRjWHUMlpoDViniy05870VlxhfgTnLbpuwTzvD76MTtWxB/mQ==",
+            "dev": true,
+            "requires": {
+                "call-bind": "^1.0.2",
+                "define-properties": "^1.1.4",
+                "es-abstract": "^1.20.4",
+                "es-shim-unscopables": "^1.0.0"
+            }
+        },
         "array.prototype.group": {
             "version": "1.1.2",
             "resolved": "https://registry.npmjs.org/array.prototype.group/-/array.prototype.group-1.1.2.tgz",
diff --git a/package.json b/package.json
index 07c6f4a..24ce418 100644
--- a/package.json
+++ b/package.json
@@ -39,6 +39,7 @@
         "@types/supertest": "^2.0.12",
         "@typescript-eslint/eslint-plugin": "^5.42.0",
         "@typescript-eslint/parser": "^5.42.0",
+        "array.prototype.flatmap": "^1.3.1",
         "eslint": "^8.0.1",
         "eslint-import-resolver-typescript": "^3.5.2",
         "eslint-plugin-import": "^2.26.0",