what is partial in typescript

Stupid Scarab answered on October 14, 2022 Popularity 10/10 Helpfulness 3/10

answer what is partial in typescript

related typescript opposite of partial

what is partial in typescript

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// Partial is a utility type that make all the properties of a type optional

interface User {
  name: string;
  age: number;
}

const updateUserField = (id: number, fieldsToUpdate: Partial<User>) => {
  return db.update(id, fieldsToUpdate);
};

// No error, age is not required because of Partial<User>
updateUserField(1, { firstname: 'Chris' });

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Source: Grepper

Tags: partial typescript

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Contributed on Oct 14 2022

Stupid Scarab

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typescript opposite of partial

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Required<Type>

Constructs a type consisting of all properties of Type set to required. The opposite of Partial.


interface Props {
  a?: number;
  b?: string;
}
 
const obj: Props = { a: 5 };
 
const obj2: Required<Props> = { a: 5 };
//Property 'b' is missing in type '{ a: number; }' but required in type 'Required<Props>'.

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Source: www.typescriptlang.org

Tags: partial

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Contributed on May 31 2023

Exuberant Elk

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what is partial in typescript

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