1/ it's easy to publish a library to NPM, anybody can do it 2/ Node.js has a barebone standard library for server purposes, in fact you can't parse a multi-par

1/ it's easy to publish a library to NPM, anybody can do it 2/ Node.js has a barebone standard library for server purposes, in fact you can't parse a multi-part POST request without using a package or writing your own. 3/ while the browser has a big API surface, state management and working with the DOM is a big pain when writing UI, so some kind of helper is often needed.