create basic express app

Signed-off-by: Arnav Gupta <[email protected]>

Author: championswimmer

.gitignore

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+node_modules/

package-lock.json

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+{
+  "name": "cb_sample_heroku_nodejs",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.17.1"
+  }
+}

package.json

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+const app = require('express')()
+
+app.get('/', (req, res) => {
+  res.send("Hello Heroku!")
+})
+
+app.listen(5555)