Error in lab 7.1

lcabello

Hi everyone,

I'm getting an error in the lab 7.1 after execute test.mjs. My code is using commonjs to export the function, where is my mistake coming from?

Error message:
_node:internal/process/esm_loader:97
internalBinding('errors').triggerUncaughtException(
^

AssertionError [ERR_ASSERTION]: function exported
at file:///Users/lcabello/projects/node/NodeJs/labs-empty/ch-7/labs-1/test.mjs:6:1 {
generatedMessage: false,
code: 'ERR_ASSERTION',
actual: false,
expected: true,
operator: '=='
}_

Here a simple example

//Index.js
const { add } = require('./sum');

console.log(add(1,2));

//Sum.js
'use strict';

const add = (a,b) => a + b;

module.exports = { add };

Thanks!

d.m.c

@icabello you're exporting an object with a function, you need to export a function.

cfinis

I have the same problem and even with the answer, I still don't get it.

If what I'm exporting is not a function, why can I write a CJS file that can call add() as a function and claims it is a function when requiring index.js?

$ cat cf.js
 
op = require('./index')
 
console.log(op.add(5,100))
console.log(typeof op.add)
 
$ node cf.js
105
function

$ npm test
> labs-1@1.0.0 test
> node test.mjs

node:internal/modules/run_main:122
triggerUncaughtException(
^

AssertionError [ERR_ASSERTION]: function exported
at file:///home/cfinis/workspace/jsnad/labs.node-v22/ch-7/labs-1/test.mjs:7:1 {
generatedMessage: false,
code: 'ERR_ASSERTION',
actual: false,
expected: true,
operator: '=='
}

Node.js v22.14.0