how to export and import default function

Question

I have one file which defines a single "default" function, and I want to import it in other:

HelloLog.js:

exports.default = (str) => {
    console.log(`Hello, logging ${str}!`);
}

Client.js:

const HelloLog = require('./HelloLog');

HelloLog.default("foobar"); // do not want

// I'd rather just do this:
HelloLog("foobar")

The fact is I get an error if I do it like in the second call above.

Question is: how should I change HelloLog.js so that second option on file Client.js would work?

Answer 1

using CommonJS Nodejs Docs

exporting one module :
HelloLog.js :

module.exports = (str) => {
    console.log(`Hello, logging ${str}!`);
}

Client.js :

const HelloLog = require('./HelloLog');

HelloLog("foobar")

---

using ECMAScript MDN Docs Nodejs Docs

HelloLog.js :

// Default exports choose any
export default expression;
export default function (…) { … } // also class, function*
export default function name1(…) { … } // also class, function*
export { name1 as default, … };

Client.js :

import HelloLog from './HelloLog';

HelloLog("foobar")

---

• CommonJS and ECMAScript can't be mixed.

Answer 2

Or this.

module.exports = (str) => {
  console.log(`Hello, logging ${str}!`);
}

const HelloLog = require('./HelloLog');

HelloLog("foobar");

Answer 3

This should work

HelloLog.js:

exports.HelloLog = (str) => {
    console.log(`Hello, logging ${str}!`);
}

Client.js:

const { HelloLog } = require('./HelloLog');

Answer 4

You are naming your export default . Try this:

export default (str) => {...}