Get started with this previous blog post for basic information, this article will just summarize actions for Node.js apps.
Background
The Autodesk Forge .Node.js package is available on NPM.
Adding TLS 1.2 support
In theory you should not need to change anything to use TLS 1.2 since Node.js is compatible and use TLS 1.2 by default in the latest versions. However, the Node.js SDK is forcing the TLS 1.2 in case you are using an older version of the Node.js engine.
What should I do?
Change your forge-apis dependency version to 0.4.3 +, and update your application using ```npm update```