Exploring the realms of NextJS and TypeScript, I find myself embarking on a project for practice. A thought crosses my mind - would it be wise to consolidate all my type definitions into a single file like global.d.ts? Could this possibly impact the performance of the project? If so, what is the recommended approach for organizing type definitions in a TypeScript environment?
Recently, I dived into a Next JS endeavor with Typescript.
To establish types, one could choose to do so in the file app/lib/definitions.ts, though the decision ultimately comes down to personal preference. It is typical for Types to follow the PascalCase naming convention.
For instance, in the definitions file we might define them like this:
export type TypeName = {
id: string;
name: string;
};
Afterwards, we can import it into the .tsx file (or whichever file it's used in) as follows:
import { TypeName } from '@/app/lib/definitions';
The benefit of defining our types in a separate file like the definitions file is that we avoid having to declare them multiple times within different .tsx files.
It's best practice to store your type definitions where they are most relevant. For instance, if you have a specific domain for users, it makes sense to keep the user type definition in that folder.
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