Node.js offers code packages and modules – code written by other developers and made public — that any developer can use to help build certain aspects and functionality in the web applications ...

Besides fixing problems with Node.js, Dahl also wanted Deno to cater for JavaScript being a very different language today than it was in 2009, when he designed Node.

Suddenly, there was no need to use PHP to build the next generation of server stacks. One language was all it took to build Node.js and the frameworks running on the client.