Nodejs

Jest — mockReset for afterEach affect toHaveBeenCalledTimes

Problem

I used Jest to mock the function for unit test on the nodeJS application. I ran into a situation that the toHaveBeenCalledTimes actual value not correct for the second ‘it’ test case. The…

AWS — host Node.js app on Linux EC2 instance with Elastic Load Balancer

1. host Node.js on Linux AMI on an AWS EC2

NodeJs — debug with Nodemon in Visual Studio Code

Multi text search in mongoose

I have a list of records with format like this “company name, company address”.

Usually the wildcard only apply to the whole text, but I want to enhance the search ability. If I type search text as “home depot toronto”, I want to see this in the…

Node.js — transform file buffer to array of object from html file input (json, csv)

How to kill the process on localhost 3000 port on window

I ran a Node.js application on localhost:3000 but it was crashed. When I tried to run it again and the old process was still there and I needed to kill it in order to run my node application.

Use special character ( , and /)for api path params in NodeJS

I need to pass the path params with special character /, like ABC/20

The parameter need to be URL encoded

encodeURIComponent("ABC/20") => "ABC%2F20"

Create pdf and upload it to AWS S3 (React, NodeJS)

Mongoose populate multiple levels

I have the following structure and I need to populate the reference in multiple level in mongoose.