Initial commit

.babelrc

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+{
+    "presets": ["es2015", "stage-0"]
+}

.eslintrc.json

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+{
+    "extends": [
+        "eslint-config-evilai"
+    ]
+}

.gitignore

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+# Logs and databases #
+######################
+*.log
+*.sql
+*.sqlite
+npm-debug*
+
+# OS generated files #
+######################
+.DS_Store?
+.DS_Store
+Icon?
+
+# NPM Installed stuff #
+#######################
+
+**/node_modules/
+__
+/.idea/
+.sass-cache
+/dump.rdb
+**/*.map
+*.gypi
+
+#      Crypt files    #
+#######################

dist/index.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+
+exports.default = function (req, res, next) {
+    if ((0, _isEmpty2.default)(req.body.entry) || !(0, _isArray2.default)(req.body.entry)) {
+        throw new Error('Data coming from messenger is corrupted. Please, check for all fields.');
+    }
+
+    if (!req.bot) {
+        throw new Error('Field \'bot\' should be initialized in request object.');
+    }
+
+    req.bot.normalized = req.body.entry.reduce(function (acc, entry) {
+        acc = acc.concat(entry.messaging);
+        return acc;
+    }, []);
+
+    next();
+};
+
+var _isEmpty = require('lodash/isEmpty');
+
+var _isEmpty2 = _interopRequireDefault(_isEmpty);
+
+var _isArray = require('lodash/isArray');
+
+var _isArray2 = _interopRequireDefault(_isArray);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

package.json

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+{
+  "name": "nbp-normaliser-fb-messenger",
+  "version": "0.0.1",
+  "description": "Node.js Bot Platform normaliser for requests from Facebook Messenger",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "babel ./src --preset babel-preset-es2015 --out-dir ./dist",
+    "build:watch": "babel --watch ./src --preset babel-preset-es2015 --out-dir ./dist",
+    "prepublish": "npm run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/evilai/nbp-normaliser-fb-messenger.git"
+  },
+  "author": "Maxim Vetrenko <[email protected]> (https://github.com/maxmert)",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/evilai/nbp-normaliser-fb-messenger/issues"
+  },
+  "homepage": "https://github.com/evilai/nbp-normaliser-fb-messenger#readme",
+  "devDependencies": {
+    "babel-core": "^6.18.0",
+    "babel-loader": "^6.2.5",
+    "babel-polyfill": "^6.16.0",
+    "babel-preset-es2015": "^6.18.0",
+    "babel-preset-stage-0": "^6.16.0",
+    "eslint-config-evilai": "0.0.1"
+  },
+  "dependencies": {
+    "lodash": "^4.16.4"
+  }
+}

src/index.js

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+import isEmpty from 'lodash/isEmpty';
+import isArray from 'lodash/isArray';
+
+/**
+ * [
+ *  {
+ *      sender: { id: '823746283746' },
+ *      recipient: { id: '98234982347' },
+ *      timestamp: 1475519849260,
+ *      message: {
+ *          mid: 'mid.239849h238fh98',
+ *          seq: 8,
+ *          text: 'hi'
+ *      }
+ *  }
+ * ]
+ */
+
+export default function(req, res, next) {
+    if (isEmpty(req.body.entry) || !isArray(req.body.entry)) {
+        throw new Error('Data coming from messenger is corrupted. Please, check for all fields.');
+    }
+
+    if (!req.bot) {
+        throw new Error('Field \'bot\' should be initialized in request object.');
+    }
+
+    req.bot.normalized = req.body.entry.reduce((acc, entry) => {
+        acc = acc.concat(entry.messaging);
+        return acc;
+    }, []);
+
+    next();
+}