Jsaem2-9 setup backend project (#1)

* JSAEM2-9 setup backend expressJS and redis connection

* JSAEM2-9 style: add empty line at the end of file

* JSAEM2-9 feat: reply 404 for all unmatched requests

* JSAEM2-9 fixed: applied required changes from QA

.eslintrc.json

@@ -0,0 +1,19 @@
+{
+    "env": {
+        "commonjs": true,
+        "es6": true,
+        "node": true
+    },
+    "extends": [
+        "airbnb-base"
+    ],
+    "globals": {
+        "Atomics": "readonly",
+        "SharedArrayBuffer": "readonly"
+    },
+    "parserOptions": {
+        "ecmaVersion": 2018
+    },
+    "rules": {
+    }
+}

.gitignore

@@ -1,3 +1,6 @@
+# macOS
+.DS_Store
+
 # Logs
 logs
 *.log

ENV_EXAMPLE

@@ -0,0 +1,3 @@
+EXPRESS_PORT=
+DB_HOST=
+DB_PORT=

app.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const debug = require('debug')('Emerald');
+const cors = require('cors');
+require('dotenv').config();
+
+const app = express();
+const indexRouter = require('./routes/index');
+
+// middleware setup
+app.use(cors());
+app.use(express.json());
+
+// Route
+app.use('/', indexRouter);
+
+app.listen(process.env.EXPRESS_PORT, () => {
+  debug(`Server is running at port::${process.env.EXPRESS_PORT}`);
+});