Detect if called through require or directly by command line

Question

How can I detect whether my Node.JS file was called using SH:node path-to-file or JS:require(\'path-to-file\')?

This is the Node.JS equival

Answer 1

I was a little confused by the terminology used in the explanation(s). So I had to do a couple quick tests.

I found that these produce the same results:

var isCLI = !module.parent;
var isCLI = require.main === module;

And for the other confused people (and to answer the question directly):

var isCLI = require.main === module;
var wasRequired = !isCLI;