TypeScript: Type Assertion optimization guide as Expected with External Library Types
I'm deploying to production and I've been researching this but I'm getting frustrated with I'm currently working with TypeScript 4.5 and integrating an external library that has its own types defined..... However, I'm working with an scenario where my type assertions don't seem to be working as expected. I have a situation where I'm trying to cast an object returned from the library to a specific interface I've defined, but TypeScript keeps throwing a type behavior. Here's the relevant code snippet: ```typescript interface User { id: number; name: string; email: string; } declare const externalLibrary: { getUser: () => { id: number; name: string; email: string; }; }; const user = externalLibrary.getUser(); const typedUser = user as User; // Type behavior here ``` The type behavior I get is: ``` Type '{ id: number; name: string; email: string; }' is not assignable to type 'User'. ``` I've tried using `const typedUser = <User>user;` as well, but it results in the same behavior. I also verified that the structure of the object returned by `getUser` matches the `User` interface. Is there something specific about type assertions with external library types that I might be missing? I've even checked if my `tsconfig.json` has the proper settings, and I have `strict` set to `true`. Any guidance would be much appreciated! This is part of a larger service I'm building. I'd really appreciate any guidance on this. I'm working in a Windows 11 environment. Thanks for your help in advance! My team is using Typescript for this CLI tool. Could this be a known issue? I'm open to any suggestions. Is there a better approach?