在 TypeScript 中，如何在 JSON 文件上设置获取 Object.keys 的类型？

Question

我正在尝试从 JSON 文件访问一个对象，我得到的错误是：

Element implicitly has an 'any' type because expression of type 'any' can't be used to index type '{...}'. ts(7053)

JSON 文件:

"networks": {
  "5777": {
    "event": {},
    "links": {},
    "address": "string",
    "transactionHash": "string"
  }
}

值5777会不时更改。所以我试图访问该值，这给了我一个错误。

来自 TS 文件的片段：

import { abi, networks } from '../build/contracts/Example.json';
import Web3 from 'web3';
let networkId: any = Object.keys(networks)[0]; // 5777
new web3.eth.Contract(abi, networks[networkId].address); // causing error

Answer 1

你可以手动施法

let networkId = Object.keys(networks)[0] as keyof typeof networks; // 5777

Answer 2

首先我赞成 @ABOS 答案，在增强和详细说明中提到了使用 abi

创建 contract data 的以下源代码

import Web3 from 'web3'
import ElectionCommission, { networks as ecNetworks} from "./truffle_abis/ElectionCommission.json";

let networkId = Object.keys(ecNetworks)[0] as keyof typeof ecNetworks;
let ecCommissionData = new web3.eth.Contract(ElectionCommission.abi as any, ecNetworks[networkId].address);

希望对大家有所帮助。

在 TypeScript 中，如何在 JSON 文件上设置获取 Object.keys 的类型？

How do you set types on getting Object.keys on JSON file in TypeScript?

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