Import error when using ES6 module syntax

[Sdator]

Since my project has enabled "type": "module" in package.json, an error was thrown when I imported it.

If I remove "type": "module" and use the CJS module, all modules in my project will need to be rewritten. Is there a good solution? thank

The following is the error message:

import { configure, getLogger } from "log4js";
         ^^^^^^^^^
SyntaxError: Named export 'configure' not found. The requested module 'log4js' is a CommonJS module, which may not support all module.exports as named exports.
CommonJS modules can always be imported via the default export, for example using:

import pkg from 'log4js';
const { configure, getLogger } = pkg;

    at ModuleJob._instantiate (node:internal/modules/esm/module_job:105:21)
    at async ModuleJob.run (node:internal/modules/esm/module_job:151:5)
    at async Loader.import (node:internal/modules/esm/loader:166:24)
    at async Object.loadESM (node:internal/process/esm_loader:68:5)

[kevintechie]

Also missing from log4js-api.

[kricha]

any news here?

[lamweili]

Duplicate of #1009.

[lamweili]

I think this is a documentation issue.
The documentation below was dated 5 years ago (02c6ebb) and might have not been updated.

import { configure, getLogger } from "log4js";
configure("./filename");
const logger = getLogger();
logger.level = "debug";
logger.debug("Some debug messages");

configure({
  appenders: { cheese: { type: "file", filename: "cheese.log" } },
  categories: { default: { appenders: ["cheese"], level: "error" } }
});

I have the updated documentation below. Let me know if it works.

import * as log4js from "log4js";
log4js.configure({
  appenders: { cheese: { type: "file", filename: "cheese.log" } },
  categories: { default: { appenders: ["cheese"], level: "error" } }
});

const logger = log4js.getLogger();
logger.level = "debug";
logger.debug("Some debug messages");

[lamweili]

@kevintechie

Also missing from log4js-api.

---

CJS

const log4js = require('@log4js-node/log4js-api');
const logger = log4js.getLogger('my-library');
logger.info("Library starting up");

ESM

import * as log4js from '@log4js-node/log4js-api';
const logger = log4js.getLogger('my-library');
logger.info("Library starting up");