This is a basic REST API which contains some endpints with get method implemented. This API also is dcumented and is end to end tested and the commands to inplement them is shown below

Contents

1. Documentation : using JSDoc
2. Testing : using jest

Documentation :

Commands first install jsdoc as dev dependency

 npm install --save-dev jsdoc

then add a configuration file jsdoc.json the add a script in package.json

 "doc": "jsdoc -c jsdoc.json"

then run the below command on your console

npm run doc
//here we can use anything insted of doc but first it  need to be changed in script tag

when we run this command a docs folder is created which can also be changed by changing destination tag in "jsdoc.json" . Now for API we need to install a plugin and then add it to plugin in jsdoc.json

npm install --save-dev jsdoc-http-plugin

Testing :

Note: If we are testing a .js file then its testing is done in .test.js file . commands first install jest as dev dependency

  npm install --save-dev jest

Then change content of script "test" to

   jest 

then after adding the code in .test.js file run the below command on the terminal

   npm run test
   //here test is written because we mentioned test in script 

Now to add Code Coverage change content of script "test" to

   jest --coverage

now run the test command and a coverage folder will be created.It contains a folder lcov-report.In that folder run run index.html file for code coverage. As we are testing api so we need Axios and to install it run the following command

   npm install axios

then include it in require on the top of file ,also include below to avoid error by using axios.

   const axios = require('axios');
   axios.defaults.adapter = require('axios/lib/adapters/http');