Upgrade to Node 18

README.md

@@ -215,7 +215,9 @@ You can either use Docker to run the server locally or emulate the function usin
 In one terminal, run this command:
 
 ```
-firebase emulators:start
+cd functions
+yarn
+firebase emulators:start --only functions
 ```
 
 In another terminal, test it:

functions/package.json

@@ -25,14 +25,14 @@
     "author": "Joris Berthelot <[email protected]>",
     "license": "MIT",
     "engines": {
-        "node": "16"
+        "node": "18"
     },
     "dependencies": {
-        "body-parser": "^1.20.1",
+        "body-parser": "^1.20.2",
         "bunyan": "^1.8.15",
-        "express": "^4.18.2",
-        "firebase-admin": "^11.2.0",
-        "firebase-functions": "^4.0.2",
+        "express": "^4.19.2",
+        "firebase-admin": "^12.1.1",
+        "firebase-functions": "^5.0.1",
         "lodash": ">=4.17.21"
     },
     "devDependencies": {