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Problem with typings #4029

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TrejGun opened this issue May 6, 2023 · 2 comments
Closed

Problem with typings #4029

TrejGun opened this issue May 6, 2023 · 2 comments
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fixed/complete This Bug is fixed or Enhancement is complete and published. investigate Under investigation and may be a bug. minor-bump Planned for the next minor version bump. v6 Issues regarding v6

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@TrejGun
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TrejGun commented May 6, 2023

Ethers Version

6.3.0

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Describe the Problem

Hey there, it's time for me to migrate from v5 to v6 and I have some problems, can you please help me to solve them?!

1 log types are incompatible

import { Interface, JsonRpcProvider, Log, LogDescription } from "ethers";

const provider = new JsonRpcProvider();
const logs: Log[] = await provider.send("eth_getLogs", [
      {
        address,
        fromBlock,
        toBlock,
        topics,
      },
    ]);

const iface = new Interface(ERC721abi);

 for (const log of logs) {
      const description = iface.parseLog(log); // <-- ERROR
}
TS2345: Argument of type 'Log' is not assignable to parameter of type '{ topics: string[]; data: string; }'.   
Types of property 'topics' are incompatible.     
The type 'readonly string[]' is 'readonly' and cannot be assigned to the mutable type 'string[]'.

I guess the reason is

parseLog(log: { topics: Array<string>, data: string}): null | LogDescription {

that has to be

parseLog(log: Log): null | LogDescription {
@nlordell
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nlordell commented Nov 7, 2023

I think you can just change the parseLog signature to:

parseLog(log: { topics: ReadonlyArray<string>, data: string }): null | LogDescription {
    // ...
}

One way to work around this is to augment the ethers modules typings with something like this:

// ethers.d.ts
import type { LogDescription } from 'ethers'

declare module 'ethers' {
  interface Interface {
    parseLog(log: { topics: ReadonlyArray<string>; data: string }): null | LogDescription
  }
}

@ricmoo ricmoo added on-deck This Enhancement or Bug is currently being worked on. minor-bump Planned for the next minor version bump. next-patch Issues scheduled for the next arch release. labels Jan 31, 2024
@ricmoo
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ricmoo commented Feb 9, 2024

Fixed in v6.11.0.

Thanks! And let me know if you still have any issues. :)

@ricmoo ricmoo closed this as completed Feb 9, 2024
@ricmoo ricmoo added fixed/complete This Bug is fixed or Enhancement is complete and published. and removed on-deck This Enhancement or Bug is currently being worked on. next-patch Issues scheduled for the next arch release. labels Feb 9, 2024
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Labels
fixed/complete This Bug is fixed or Enhancement is complete and published. investigate Under investigation and may be a bug. minor-bump Planned for the next minor version bump. v6 Issues regarding v6
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3 participants