Is there a way to install and also use the different package versions in npm? Installations works:
npm install -g [email protected] npm install -g [email protected] npm install -g [email protected] I can install npm install -g [email protected] and check npm view web3 versions them. But how can I use them in the *.js script? Something like this:
require('[email protected]'); require('[email protected]'); require('[email protected]'); There is a node module that allows you to do it.
npm-install-version Install it: npm install npm-install-version --save-dev
var niv = require('npm-install-version'); niv.install('[email protected]'); niv.install('[email protected]'); var package_old = niv.require('[email protected]'); var package_new = niv.require('[email protected]'); 
I did some research and it seems that its not possible with standard NPM. Here is the feature-request: https://github.com/npm/npm/issues/5499
However, with yarn (an NPM alternative from Facebook), you can do it out of the box by using yarn add and giving the package an alias.
I have not tried this for globally installed packages though, I assume it works the same.
