We all know normally Install npm package like this.
$ npm install express

• express@4.17.1 added 50 packages from 37 contributors and audited 126 packages in 3.262s found 0 vulnerabilities This method install a newer version or latest version of that package. But if we want to install particular version of package then follow it. Synax: npm install [package]@[version]

$ npm install express@4.16.1

• express@4.16.1 added 48 packages from 36 contributors and audited 121 packages in 2.986s found 0 vulnerabilities