Prerequisites

C/C++ and JavaScript

The purpose of Node-API is to enable you to use your existing or newly written C/C++ code from JavaScript. This assumes at least a passing familiarity with both JavaScript and C/C++. The level of familiarity necessary is dependent upon the complexity of your project and your involvement with the JavaScript and the C/C++.

For your own projects, it will be necessary to have an understanding of the C/C++ code you plan to integrate as well as what objectives you hope to achieve with your project on the JavaScript side of things.

Command line tools

Many of the tools used to develop Node-API modules are run from the command line. So at least a passing familiarity and confidence with your command line tool is essential. IDEs, as described here can help. But they also rely in the command line.