diff --git a/.gitignore b/.gitignore
index 611cfb5..8a246db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,3 +45,4 @@ database-debug.log
 firestore-debug.log
 ui-debug.log
 *.cache
+functions\lib
diff --git a/functions/package-lock.json b/functions/package-lock.json
index bcfec90..7c5c659 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -12,6 +12,7 @@
       "devDependencies": {
         "@typescript-eslint/eslint-plugin": "^5.12.0",
         "@typescript-eslint/parser": "^5.12.0",
+        "concurrently": "^9.1.0",
         "eslint": "^8.57.1",
         "eslint-config-google": "^0.14.0",
         "eslint-plugin-import": "^2.25.4",
@@ -2890,6 +2891,48 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/concurrently": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/concurrently/-/concurrently-9.1.0.tgz",
+      "integrity": "sha512-VxkzwMAn4LP7WyMnJNbHN5mKV9L2IbyDjpzemKr99sXNR3GqRNMMHdm7prV1ws9wg7ETj6WUkNOigZVsptwbgg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "chalk": "^4.1.2",
+        "lodash": "^4.17.21",
+        "rxjs": "^7.8.1",
+        "shell-quote": "^1.8.1",
+        "supports-color": "^8.1.1",
+        "tree-kill": "^1.2.2",
+        "yargs": "^17.7.2"
+      },
+      "bin": {
+        "conc": "dist/bin/concurrently.js",
+        "concurrently": "dist/bin/concurrently.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/open-cli-tools/concurrently?sponsor=1"
+      }
+    },
+    "node_modules/concurrently/node_modules/supports-color": {
+      "version": "8.1.1",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
+      "integrity": "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/supports-color?sponsor=1"
+      }
+    },
     "node_modules/content-disposition": {
       "version": "0.5.4",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
@@ -7400,6 +7443,16 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "node_modules/rxjs": {
+      "version": "7.8.1",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
+      "integrity": "sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tslib": "^2.1.0"
+      }
+    },
     "node_modules/safe-array-concat": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/safe-array-concat/-/safe-array-concat-1.1.2.tgz",
@@ -7612,6 +7665,16 @@
         "node": ">=8"
       }
     },
+    "node_modules/shell-quote": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/shell-quote/-/shell-quote-1.8.1.tgz",
+      "integrity": "sha512-6j1W9l1iAs/4xYBI1SYOVZyFcCis9b4KCLQ8fgAGG07QvzaRLVVRQvAy85yNmmZSjYjg4MWh4gNvlPujU/5LpA==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/side-channel": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.6.tgz",
@@ -8036,6 +8099,16 @@
       "license": "MIT",
       "optional": true
     },
+    "node_modules/tree-kill": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.2.tgz",
+      "integrity": "sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "tree-kill": "cli.js"
+      }
+    },
     "node_modules/ts-deepmerge": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/ts-deepmerge/-/ts-deepmerge-2.0.7.tgz",
diff --git a/functions/package.json b/functions/package.json
index 1ee54db..1e7d6f1 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -8,7 +8,8 @@
     "shell": "npm run build && firebase functions:shell",
     "start": "npm run shell",
     "deploy": "firebase deploy --only functions",
-    "logs": "firebase functions:log"
+    "logs": "firebase functions:log",
+    "emu": "concurrently -k -n \"TypeaScript,Emulator\" -c \"cyan.bold,green.bold\" \"npx tsc --watch\" \"firebase emulators:start\""
   },
   "engines": {
     "node": "18"
@@ -21,6 +22,7 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^5.12.0",
     "@typescript-eslint/parser": "^5.12.0",
+    "concurrently": "^9.1.0",
     "eslint": "^8.57.1",
     "eslint-config-google": "^0.14.0",
     "eslint-plugin-import": "^2.25.4",