logger.js

// VanillaJS Logger
// 
// NOTE: You probably shouldn't use this in production... you've been warned.
let logger = {};

// Log levels
// debug=0, info=1, log=2, warn=3, error=4
const LOG_LEVELS = [
  "debug",
  "info",
  "log",
  "warn",
  "error",
];
const logComponent = "api.logger";

// Set log level
logger.setLogLevel = function(logLevel="warn") {
  console[logLevel]("[%s] log level: %s", logComponent, logLevel);
  let limit = LOG_LEVELS.indexOf(logLevel);
  LOG_LEVELS.filter( function(level, index) { if (index < limit) { 
    console[logLevel]("[%s] disabling console.%s()", logComponent, level);
    console[level] = function() {};
  }});
};

// Timestamp generator
logger.timestampISO = function() {
  let now = new Date();
  return now.toISOString();
};

// Custom JSON Logger
logger.log = function(msg, level="log") {
  console[level](JSON.stringify({
    ts: logger.timestampISO(),
    msg: msg,
  },null,0))
};

export default logger;

Nope I agree with you. It feels easier to use this as opposed to installing another module.