https://firebase.google.com/docs/functions/writing-and-viewing-logs?authuser=0#writing_logs

[juicehampa-eng]

functions-samples/Node/quickstarts/monitor-cloud-logging/functions/index.js

Lines 23 to 31 in a6ae4cb

	// All available logging functions
	const {
	log,
	info,
	debug,
	warn,
	error,
	write,
	} = require("firebase-functions/logger");