How to run mongodb via npm script? - node.js

Question

Under the script in my package.json, the code is written as:
"scripts": {
"db": "mongod",
"start": "node app.js",
"server": "nodemon app.js",
"client": "npm run start --prefix client",
"dev": "concurrently \"npm run db\" \"npm run server\" \"npm run client\"",
"postinstall": "cd client && npm install"
},
I want the mongodb to start running after typing in npm run dev. However, it failed and the error messages showing up in my command prompt were as follows:
[0] npm ERR! code ELIFECYCLE
[0] npm ERR! errno 100
[0] npm ERR! projectName db: `mongod`
[0] npm ERR! Exit status 100
There is no problem running mongodb if I open a separate terminal and type mongod. It only arises when I try to run the database, server and client in one line of code via npm run dev.

Answer 1

If you intend to simply start mongo before your project then best approach will be just write a shellscript which executes command to perform your operations , and to save and check command output you can write that logs in another file . in your Case below will be the best idea, create file called runLocalSetup.sh and add below code
#!/bin/bash
exec &> logfile.txt
service mongod start
npm run dev
above code will start mongo service and then execute the app, and create the log of command output