TypeScript Index Signature for Flexible Object Shape Causing Type Errors in Axios Response
Hey everyone, I'm running into an issue that's driving me crazy. This might be a silly question, but I'm working with TypeScript and Axios to fetch data from an API that returns a flexible object shape. I'm trying to define a type that captures this variability using an index signature, but I'm running into type errors. Here’s a simplified version of my code: ```typescript import axios from 'axios'; interface ApiResponse { [key: string]: any; // Trying to allow any property name } async function fetchData(): Promise<ApiResponse> { const response = await axios.get<ApiResponse>('https://api.example.com/data'); return response.data; } fetchData().then(data => { console.log(data); }); ``` When I compile this, TypeScript throws the following behavior: ``` Type 'unknown' is not assignable to type 'ApiResponse'. ``` I've tried explicitly defining the expected shape of the response by creating a union type, but it gets messy given that the API can return a wide variety of keys. I also attempted to cast the response using `as ApiResponse`, but that feels unsafe since it bypasses TypeScript's type checking. Is there a better way to handle the response type while keeping type safety? I want to ensure that I can access properties safely without resorting to type assertions. I've also read about using `Record<string, unknown>` instead of `any`, but I'm not sure if that would solve my scenario without losing flexibility. I'm using TypeScript 4.5 and Axios 0.24, and I really want to keep the code clean and maintainable. Any insights would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Could someone point me to the right documentation?