Issue with module wrapper function - node.js

Question

I'm trying to learn node.js, and having an issue with running a code with module wrapper function. Here is the code
logger.js (1)
var url = 'http://mylogger.io/log';
function log(message) {
console.log(message);
}
module.exports.log = log;
logger.js(2)
( function (exports, require, module, __filename, __dirname)
{
var url = 'http://mylogger.io/log';
function log(message) {
console.log(message);
}
module.exports.log = log;
})
app.js
const logger = require('./logger.js')
console.log(logger);
logger.log('Hiya');
The logger.js(1) works fine, logger.js(2) gives out following error.
TypeError: logger.log is not a function
at Object.<anonymous> ()
at Module._compile (node:internal/modules/cjs/loader:1092:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1121:10)
at Module.load (node:internal/modules/cjs/loader:972:32)
at Function.Module._load (node:internal/modules/cjs/loader:813:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
at node:internal/main/run_main_module:17:47
I was expecting to get the same result from both cases

Answer 1

In the snippet which you have attached as logger.js(2),
function (exports, require, module, __filename, __dirname) is irrelevant and does not make sense to the NodeJS Compiler.
The correct way of doing what you expect is the one listed in logger.js(1)
If you are exporting multiple functions then,
var url = 'http://mylogger.io/log';
function log(message) {
console.log(message);
}
function log_twice(message) {
console.log(message);
console.log(message);
}
module.exports = { log: log, log_twice: log_twice }; //and so on
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