CODEWITHSUNDEEP
typescripttypescript-typings
Lukas
Lukas

Reputation: 106

Define Objecttype as Part of an other Class or Interface

I have an Interface Data which is structured like this:

interface Data {
    message: string;
    Id: string;
    uid: string;
}

Data with this Structure uploads to a database. When I want to Update one Element on my database I call a function updateData(updatedData) and I want this variable updatedData to be an Object not of type Data but all properties should be part of the Datainterface.

I tried to find an answer to this question but I don‘t even know how to express my question in a short way so I can get some good results from a search engine.

So maybe you can give me at least a keyword to search.

Upvotes: 0

Views: 37

Answers (1)

Juraj Kocan
Juraj Kocan

Reputation: 2878

if i understand you correctly you just want partial of Data interface? if so, you can use partial type in ts. 

interface IData {
  message: string;
  id: string;
  uid: string;
}

type partialData = Partial<IData>;

const messageData: partialData = {
  message: 'only message updated',
};

const idData: partialData = {
  id: 'only id updated',
};

const updateData = (data: partialData) => {
  console.log();
};

updateData(messageData);
updateData(idData);

from ts definition 

type Partial<T> = { [P in keyof T]?: T[P] | undefined; }

it just make all properties as optional

Upvotes: 1

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