log with calling location info in Node.js

index.js

const {main} = require('./main')
main()

log.js

exports.log = function log(...args) {
	const err = {}
	const limit = Error.stackTraceLimit
	Error.stackTraceLimit = 1
	Error.captureStackTrace(err, log)
	Error.stackTraceLimit = limit
	const l = err.stack.split(/\n/)[1]
	console.log(...args, l)
}

main.js

const {log} = require('./log')

exports.main = function test() {
	log('Hello world!')
}

output

> node .
Hello world!     at test (/path/main.js:4:2)