Eth is not a constructor

[slavafomin]

Hello!

According to the typings, the web3-eth package exports the Eth class.

Here's the usage code which is 100% correct according to the provided typings:

import { Eth } from 'web3-eth';

const eth = new Eth(provider);

However, at runtime it causes the Eth is not a constructor error.

I have to use this typing augmentation:

import { Eth } from 'web3-eth';

declare module 'web3-eth' {
  export = Eth;
}

And to import it like this: import Eth from 'web3-eth'; in order to make it work.

You need to replace export class Eth { ... } with export = class Eth { ... } in your declarations.

Thank you!

[nivida]

Thanks for opening this issue! I've checked your problem closer and you are missing the required allowSyntheticDefaultImports and esModuleInterop configuration options as documented here.

Feel free to ping me here again if this wasn’t the case and I will re-open this issue.

[slavafomin]

I'm using esModuleInterop and it's not the case here. When your are exporting a class like this: export class Eth { ... } you are using named exports, which is effectively translates to modules.exports = { Eth: Eth }; and should be imported with import { Eth } from '...'.

I believe my issue still stands true.

[nivida]

@slavafomin Thanks for commenting here on this issue! I will reopen it and will try again to reproduce your issue. 👌

[benjlevesque]

I have a similar issue with AbiCoder in web3-eth-abi:

import { AbiCoder } from "web3-eth-abi";
new AbiCoder().encodeEventSignature("");

=> web3_eth_abi_1.AbiCoder is not a constructor

---

My suggestion is to append these 2 lines to web3-eth-abi/types/index.d.ts

declare const coder: AbiCoder;
export default coder;

It enables to use this code

import  AbiCoder  from "web3-eth-abi";
AbiCoder.encodeEventSignature("");

Indeed, the JS implementation exports an instance of AbiCoder, which should be reflected by the declaration file.

[AuHau]

Hey there,
I believe this is still an issue even with the required compiler flags. I created reproducible bug repo, just to be sure I am not missing something: https://github.com/AuHau/web3.js_types

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment, otherwise this issue will be closed in 7 days

[AuHau]

Still is an issue