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\node_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?

It's a bit strange, that you have { at the beginning. If it's a typical instance of Error then use @Ryan's solution. If error.message for some reason contains JSON and Error is a key, then useJSON.parse(error.message).Error as @Avihay suggested to extract the error — Dmitry Druganov
– Dmitry Druganov, Commented Nov 5, 2017 at 15:36
@Dmitry: The { is formatting from e.g. console.log('%o', new Error()) — Ry-
– Ry- ♦, Commented Nov 5, 2017 at 16:19

Ry- · Accepted Answer · 2017-11-05 15:26:14Z

29

It’s in the message property.

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

See also the string representation of errors per ECMAScript.

answered Nov 5, 2017 at 15:26

Ry-♦

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taynguyen · Accepted Answer · 2020-04-10 09:24:04Z

13

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

answered Apr 10, 2020 at 9:24

taynguyen

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