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Discussion on: Type-safe API mocking with Mock Service Worker and TypeScript

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Replies for: Hello Artem, great article, and thank you. I do have a question, how do you define the response body interface if you want to return either an er...

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kettanaito profile image
Artem Zakharchenko •

Thank you, Fakorede.

With the current implementation you'd have to use a union type to define such response:

interface TodoResponsePayload {
  todo: Todo
}

interface TodoResponseError {
  status: number
  message: string
}

type TodoResponse = TodoResponsePayload | TodoResponseError

rest.get<TodoId, TodoResponse>('/todo', handler).
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Boluwatife Fakorede •

Great. Thanks for your response