Log, Log, it's big it's heavy it's wood. Better than bad, it's good

stimpyren.js

// a very basic Winston replacement, which combines well with a systemd service, to replace most features

const isProd = process.env.NODE_ENV === "production";

const logLog = (level, ...e) => {
  switch (true) {
    case e && !!e.find((o) => o.redact): // params contain an object with a key called redact: {redact: true}
    case isProd && level === "dir": 
    case isProd && level === "log":
    case isProd && level === "info":
    case isProd && level === "debug":
      return;
    default:
      console[level](...e);
      break;
  }
};

const logger = {
  error: (...e) => logLog("error", ...e), // level 1
  redacted: (...e) => logLog("error", { redact: true }, ...e),
  warn: (...e) => logLog("warn", ...e), // level 2
  log: (...e) => logLog("log", ...e), // level 3
  info: (...e) => logLog("info", ...e), // level 4
  debug: (...e) => logLog("debug", ...e), // level 5
  silly: (...e) => logLog("debug", ...e), // level 5
}

// full redacted warn example, using core API
logLog( 
  "warn", 
  "someFunctionName or some/path/name", 
  new Error("hide internals from prod logs, but level a warning in dev/test"), 
  {redact: true}
);
// simple error report
logger.error("something went wrong"); // console.error with filters
// verbose mode
logger.debug("someConfigOptions", {isProd, logger}); // console.debug with filters

// Thanks John Kricfalusi ;-]
// https://www.youtube.com/watch?v=5Y0dGHkAkIY