const isDebugEnabled = process.env.NODE_ENV !== "production";

const isInfoEnabled = true;

const isErrorEnabled = true;

let loggerName = "default";

console.log(

  "isDebugEnabled,isInfoEnabled,isErrorEnabled=>",

  `${isDebugEnabled},${isInfoEnabled},${isErrorEnabled}`

);

const debug = log => {

  if (isDebugEnabled) {

    console.warn("[", loggerName, "]", log);

  }

};

const info = log => {

  if (isInfoEnabled) {

    console.log("[", loggerName, "]", log);

  }

};

const error = log => {

  if (isErrorEnabled) {

    console.error("[", loggerName, "]", log);

  }

};

const logger = {

  debug,

  info,

  error

};

export const getLogger = name => {

  if (name) {

    loggerName = name;

  }

  return logger;

};

使用

import { getLogger } from "../util/logger";

const logger = getLogger("pages/index");

logger.info("fetch siteConfig and postList finish");