demo.js

const { Logger } = require("./index.js");

// Create a parent logger
const parent = Logger.console("parent");

parent.info("Some info");
parent.error("An error!");
parent.info("Some", "delimited", "info");

// Change the log level
parent.set_log_level("warn");

parent.info("I am not printed");

parent.set_log_level("none");
parent.error("I do nothing, now");

// Better yet, just create a no-op logger from the start. Useful for unit test configurations
const no_op = Logger.noop();

// Create a child logger
const child = parent.create_child("child.1");

child.info("I am not printed, because I inherited a log level");
child.set_log_level("debug");
child.info("But now I am!");

// Change the logging format
const only_time = Logger.console("no_stamp", { format:"[:LTIME] :TYPE - :NAMESPACE | :STRING" });
only_time.info("Only the time!");
const no_timestamp = Logger.console("no_stamp", { format:":TYPE - :NAMESPACE | :STRING" });
no_timestamp.info("Simplified!");

const no_header = Logger.console("no_header", { format:null });


// But what if I hate beautiful colors?
const eye_pain = Logger.console("eye_pain", { no_colors:true });
eye_pain.warn("IT BURNS!");


// Log into a file
const file = Logger.append_file("test.log", "A");
file.info("This is in a file");
file.warn("AND SO IS THIS");