diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index c4e8f090bd..5a18eb08a5 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -77,6 +77,9 @@ jobs:
       - name: Run ESLint
         run: npm run lint
 
+      - name: Run Flow
+        run: npm run flow 
+
       - name: Node tests
         run: npm test
 
diff --git a/.gitignore b/.gitignore
index 7bc64434fd..13b67e1e86 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,7 +66,6 @@ coverage
 test/files/normalise.jpg.png
 test/files/normalise-resized.jpg
 package-lock.json
-/package.json
 *.mongodb
 link-plugins.sh
 test.sh
diff --git a/package.json b/package.json
new file mode 100644
index 0000000000..b5be639fba
--- /dev/null
+++ b/package.json
@@ -0,0 +1,207 @@
+{
+    "name": "nodebb",
+    "license": "GPL-3.0",
+    "description": "NodeBB Forum",
+    "version": "3.8.4",
+    "homepage": "https://www.nodebb.org",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/NodeBB/NodeBB/"
+    },
+    "main": "app.js",
+    "scripts": {
+        "start": "node loader.js",
+        "lint": "eslint --cache ./nodebb .",
+        "test": "nyc --reporter=html --reporter=text-summary mocha",
+        "coverage": "nyc report --reporter=text-lcov > ./coverage/lcov.info",
+        "coveralls": "nyc report --reporter=text-lcov | coveralls && rm -r coverage",
+        "build": "babel src/ -d lib/",
+        "prepublish": "yarn run build",
+        "flow": "flow"
+    },
+    "nyc": {
+        "exclude": [
+            "src/upgrades/*",
+            "test/*"
+        ]
+    },
+    "lint-staged": {
+        "*.js": [
+            "eslint --fix"
+        ]
+    },
+    "dependencies": {
+        "@adactive/bootstrap-tagsinput": "0.8.2",
+        "@fontsource/inter": "5.0.18",
+        "@fontsource/poppins": "5.0.14",
+        "@fortawesome/fontawesome-free": "6.5.2",
+        "@isaacs/ttlcache": "1.4.1",
+        "@nodebb/spider-detector": "2.0.3",
+        "@popperjs/core": "2.11.8",
+        "@socket.io/redis-adapter": "8.3.0",
+        "ace-builds": "1.33.2",
+        "archiver": "7.0.1",
+        "async": "3.2.5",
+        "autoprefixer": "10.4.19",
+        "bcryptjs": "2.4.3",
+        "benchpressjs": "2.5.1",
+        "body-parser": "1.20.2",
+        "bootbox": "6.0.0",
+        "bootstrap": "5.3.3",
+        "bootswatch": "5.3.3",
+        "chalk": "4.1.2",
+        "chart.js": "4.4.2",
+        "cli-graph": "3.2.2",
+        "clipboard": "2.0.11",
+        "colors": "1.4.0",
+        "commander": "12.0.0",
+        "compare-versions": "6.1.0",
+        "compression": "1.7.4",
+        "connect-flash": "0.1.1",
+        "connect-mongo": "5.1.0",
+        "connect-multiparty": "2.2.0",
+        "connect-pg-simple": "9.0.1",
+        "connect-redis": "7.1.1",
+        "cookie-parser": "1.4.6",
+        "cron": "3.1.7",
+        "cropperjs": "1.6.2",
+        "csrf-sync": "4.0.3",
+        "daemon": "1.1.0",
+        "diff": "5.2.0",
+        "esbuild": "0.21.2",
+        "express": "4.19.2",
+        "express-session": "1.18.0",
+        "express-useragent": "1.0.15",
+        "fetch-cookie": "3.0.1",
+        "file-loader": "6.2.0",
+        "fs-extra": "11.2.0",
+        "graceful-fs": "4.2.11",
+        "helmet": "7.1.0",
+        "html-to-text": "9.0.5",
+        "imagesloaded": "5.0.0",
+        "ioredis": "5.4.1",
+        "ipaddr.js": "2.2.0",
+        "jquery": "3.7.1",
+        "jquery-deserialize": "2.0.0",
+        "jquery-form": "4.3.0",
+        "jquery-serializeobject": "1.0.0",
+        "jquery-ui": "1.13.3",
+        "jsesc": "3.0.2",
+        "json2csv": "5.0.7",
+        "jsonwebtoken": "9.0.2",
+        "lodash": "4.17.21",
+        "logrotate-stream": "0.2.9",
+        "lru-cache": "10.2.2",
+        "mime": "3.0.0",
+        "mkdirp": "3.0.1",
+        "mongodb": "6.6.1",
+        "morgan": "1.10.0",
+        "mousetrap": "1.6.5",
+        "multiparty": "4.2.3",
+        "nconf": "0.12.1",
+        "nodebb-plugin-2factor": "7.5.3",
+        "nodebb-plugin-composer-default": "10.2.36",
+        "nodebb-plugin-dbsearch": "6.2.5",
+        "nodebb-plugin-emoji": "5.1.15",
+        "nodebb-plugin-emoji-android": "4.0.0",
+        "nodebb-plugin-location-to-map": "^0.1.1",
+        "nodebb-plugin-markdown": "12.2.6",
+        "nodebb-plugin-mentions": "4.4.3",
+        "nodebb-plugin-ntfy": "1.7.4",
+        "nodebb-plugin-spam-be-gone": "2.2.2",
+        "nodebb-rewards-essentials": "1.0.0",
+        "nodebb-theme-harmony": "1.2.63",
+        "nodebb-theme-lavender": "7.1.8",
+        "nodebb-theme-peace": "2.2.6",
+        "nodebb-theme-persona": "13.3.25",
+        "nodebb-widget-essentials": "7.0.18",
+        "nodemailer": "6.9.13",
+        "nprogress": "0.2.0",
+        "passport": "0.7.0",
+        "passport-http-bearer": "1.0.1",
+        "passport-local": "1.0.0",
+        "pg": "8.11.5",
+        "pg-cursor": "2.10.5",
+        "postcss": "8.4.38",
+        "postcss-clean": "1.2.0",
+        "progress-webpack-plugin": "1.0.16",
+        "prompt": "1.3.0",
+        "rimraf": "5.0.7",
+        "rss": "1.2.2",
+        "rtlcss": "4.1.1",
+        "sanitize-html": "2.13.0",
+        "sass": "1.77.1",
+        "semver": "7.6.2",
+        "serve-favicon": "2.5.0",
+        "sharp": "0.32.6",
+        "sitemap": "7.1.1",
+        "socket.io": "4.7.5",
+        "socket.io-client": "4.7.5",
+        "sortablejs": "1.15.2",
+        "spdx-license-list": "6.9.0",
+        "terser-webpack-plugin": "5.3.10",
+        "textcomplete": "0.18.2",
+        "textcomplete.contenteditable": "0.1.1",
+        "timeago": "1.6.7",
+        "tinycon": "0.6.8",
+        "toobusy-js": "0.5.1",
+        "tough-cookie": "4.1.4",
+        "validator": "13.12.0",
+        "webpack": "5.91.0",
+        "webpack-merge": "5.10.0",
+        "winston": "3.13.0",
+        "workerpool": "9.1.1",
+        "xml": "1.0.1",
+        "xregexp": "5.1.1",
+        "yargs": "17.7.2",
+        "zxcvbn": "4.4.2"
+    },
+    "devDependencies": {
+        "@apidevtools/swagger-parser": "10.1.0",
+        "@babel/cli": "^7.25.9",
+        "@babel/core": "^7.25.9",
+        "@babel/preset-flow": "^7.25.9",
+        "@commitlint/cli": "19.3.0",
+        "@commitlint/config-angular": "19.3.0",
+        "babel-plugin-syntax-hermes-parser": "^0.25.0",
+        "coveralls": "3.1.1",
+        "eslint": "8.57.0",
+        "eslint-config-nodebb": "0.2.1",
+        "eslint-plugin-import": "2.29.1",
+        "flow-bin": "^0.250.0",
+        "grunt": "1.6.1",
+        "grunt-contrib-watch": "1.1.0",
+        "husky": "8.0.3",
+        "jsdom": "24.0.0",
+        "lint-staged": "15.2.2",
+        "mocha": "10.4.0",
+        "mocha-lcov-reporter": "1.3.0",
+        "mockdate": "3.0.5",
+        "nyc": "15.1.0",
+        "smtp-server": "3.13.4"
+    },
+    "optionalDependencies": {
+        "sass-embedded": "1.77.1"
+    },
+    "resolutions": {
+        "*/jquery": "3.7.1"
+    },
+    "bugs": {
+        "url": "https://github.com/NodeBB/NodeBB/issues"
+    },
+    "engines": {
+        "node": ">=18"
+    },
+    "maintainers": [
+        {
+            "name": "Julian Lam",
+            "email": "julian@nodebb.org",
+            "url": "https://github.com/julianlam"
+        },
+        {
+            "name": "Barış Soner Uşaklı",
+            "email": "baris@nodebb.org",
+            "url": "https://github.com/barisusakli"
+        }
+    ]
+}
diff --git a/src/api/posts.js b/src/api/posts.js
index a4a706567e..e8c95d09ad 100644
--- a/src/api/posts.js
+++ b/src/api/posts.js
@@ -1,3 +1,4 @@
+// @flow
 'use strict';
 
 const validator = require('validator');