Make a single property optional in TypeScript

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You can also do something like this, partial only some of the keys.

type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>
type PartialBy<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>

interface Person {
  name: string;
  hometown: string;
  nickname: string;
}

type MakePersonInput = PartialBy<Person, 'nickname'>

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