How to read error message as a string from error object on Node.js

Question

For example I just got this error:

{ Error: There was an error sending your trade offer. We were unable to contact the game's item server. The game's item server may be down or Steam may be experiencing temporary connectivity issues. Please try again later.
    at Object.exports.makeAnError (C:\Some\Boring\Route
ode_modules\steam-tradeoffer-manager\lib\helpers.js:17:12)
    at SteamCommunity.manager._community.httpRequestPost...

How do I get just the "There was an error sending your trade offer..." part so I can later send it back to the client?

user_707111 · Answer

It’s in the message property.

let error = new Error('example');
console.log(error.message);

See also the string representation of errors per ECMAScript.

user_2220805 · Answer

My err.message is null. I used err.toString() It's saved my ass.

How to read error message as a string from error object on Node.js

2 Answers