i can run my file on the pc ,but when i uplode it to heroku ,ites not working ,and it shows error code like this .NPM_CONFIG_LOGLEVEL=error NODE_VERBOSE=false NODE_ENV=production NODE_MODULES_CACHE=true my node virson is s (1)> node --versionv14.17.3 npm verson ismatronics (1)> npm --version6.14.13 and i have write a nodejs package json like this .{"name": "LiveEmbellishedAnimatronics","version": "1.0.0","description": "","main": "app.js","dependencies": {"body-parser": "^1.19.0","cookie-parser": "^1.4.5","express": "^4.17.1","express-session": "^1.17.2","http-errors": "^1.8.0","morgan": "^1.10.0","passport": "^0.5.0"},"devDependencies": {},"scripts": {"test": "echo \"Error: no test specified\" && exit 1","start": "webpack-dev-server --hot"},"keywords": [],"author": "","license": "ISC"}-----------my app js is like this var express = require('express'); var exphbs = require('express-handlebars'); var app = express(); //app.engine('.hbs', exphbs({extname: '.hbs'})); //app.set('view engine', '.hbs'); app.engine('hbs', exphbs({defaultLayout: false, extname:'.hbs',})); const bodyParser = require("body-parser"); const fs = require("fs"); var createError = require("http-errors"); const passport = require("passport"); var path = require("path"); const session = require("express-session"); var cookieParser = require("cookie-parser"); var logger = require("morgan"); var express = require('express'); var exphbs = require('express-handlebars'); app.set("views", path.join(__dirname, "views")); app.set("view engine", "hbs"); app.use(logger("dev")); app.use(express.json()); app.use(express.urlencoded({ extended: false })); app.use(cookieParser()); app.use(express.static(path.join(__dirname, "public"))); app.use(express.static("./public")); app.use(bodyParser.urlencoded({ extended: false })); app.use(bodyParser.json()); var userLogin = {}; app.post("/api/login", (req, res) => { fs.readFile("./data.json", (err, data) => { var arr = []; if (err) { console.log(err); } else { if (data.toString()) { arr = JSON.parse(data.toString()); } var s = arr.find((item) => { if (item.name == req.body.name) { return item; } }); if (s) { if (s.password == req.body.password) { userLogin = req.body; res.json({ status: "y", meg: "login success", data: s.name, }); } else { res.json({ status: "err", meg: "wrong password ", }); } } else { res.json({ status: "n", meg: "no such user ", }); } } }); }); app.get("/index", (req, res) => { if (userLogin.name) res.render("index", { username: userLogin.name }); else res.render("login"); }); app.get("/", (req, res) => { res.render("login"); }); app.set("views", path.join(__dirname, "views")); app.use(express.static(path.join(__dirname, "public"))); var PORT = 3000; app.listen(3000, function () { console.log(`Listening on port ${PORT}`); });

app.js: var express = require("express");var exphbs = require("express-handlebars");var app =…

Answered: my node virson is s (1)> node --version…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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i can run my file on the pc ,but when i uplode it to heroku ,ites not working ,and it shows error code like this .

NPM_CONFIG_LOGLEVEL=error NODE_VERBOSE=false NODE_ENV=production NODE_MODULES_CACHE=true

my node virson is s (1)> node --version
v14.17.3

npm verson is

matronics (1)> npm --version
6.14.13

and i have write a nodejs package json like this .

{
"name": "LiveEmbellishedAnimatronics",
"version": "1.0.0",
"description": "",
"main": "app.js",
"dependencies": {
"body-parser": "^1.19.0",
"cookie-parser": "^1.4.5",
"express": "^4.17.1",
"express-session": "^1.17.2",
"http-errors": "^1.8.0",
"morgan": "^1.10.0",
"passport": "^0.5.0"
},
"devDependencies": {},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "webpack-dev-server --hot"
},
"keywords": [],
"author": "",
"license": "ISC"
}

-----------

my app js is like this

var express = require('express');
	var exphbs = require('express-handlebars');
	var app = express();
	//app.engine('.hbs', exphbs({extname: '.hbs'}));
	//app.set('view engine', '.hbs');
	app.engine('hbs', exphbs({defaultLayout: false, extname:'.hbs',}));
	const bodyParser = require("body-parser");
	const fs = require("fs");
	var createError = require("http-errors");
	const passport = require("passport");
	var path = require("path");
	const session = require("express-session");
	var cookieParser = require("cookie-parser");
	var logger = require("morgan");
	var express = require('express');
	var exphbs = require('express-handlebars');
	app.set("views", path.join(__dirname, "views"));
	app.set("view engine", "hbs");
	app.use(logger("dev"));
	app.use(express.json());
	app.use(express.urlencoded({ extended: false }));
	app.use(cookieParser());
	app.use(express.static(path.join(__dirname, "public")));
	app.use(express.static("./public"));
	app.use(bodyParser.urlencoded({ extended: false }));
	app.use(bodyParser.json());
	var userLogin = {};
	app.post("/api/login", (req, res) => {
	fs.readFile("./data.json", (err, data) => {
	var arr = [];
	if (err) {
	console.log(err);
	} else {
	if (data.toString()) {
	arr = JSON.parse(data.toString());
	}
	var s = arr.find((item) => {
	if (item.name == req.body.name) {
	return item;
	}
	});
	if (s) {
	if (s.password == req.body.password) {
	userLogin = req.body;
	res.json({
	status: "y",
	meg: "login success",
	data: s.name,
	});
	} else {
	res.json({
	status: "err",
	meg: "wrong password ",
	});
	}
	} else {
	res.json({
	status: "n",
	meg: "no such user ",
	});
	}
	}
	});
	});

	app.get("/index", (req, res) => {
	if (userLogin.name) res.render("index", { username: userLogin.name });
	else res.render("login");
	});

	app.get("/", (req, res) => {
	res.render("login");
	});


	app.set("views", path.join(__dirname, "views"));

	app.use(express.static(path.join(__dirname, "public")));





	var PORT = 3000;
	app.listen(3000, function () {
	console.log(`Listening on port ${PORT}`);
	});

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