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Typescript recursive type

Gleaming Goose answered on July 11, 2022 Popularity 9/10 Helpfulness 2/10

answer Typescript recursive type

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Typescript recursive type

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type DeepPartial<T> = {
  [P in keyof T]?: DeepPartial<T[P]>;
};

function find<T>(criteria: DeepPartial<T>): T[] {
  ...
}

type User = {
  id: number;
  name: string;
  address: {
    country: string;
    city: string;
    house: string;
    zipcode: string;
  };
};

const users = find({
  address: { coutry: 'UK' }
});

Popularity 9/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: recursive-type typescript

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Contributed on Feb 15 2023

Gleaming Goose

0 Answers Avg Quality 2/10

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typescript recursive types

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type NestedNumbers = number | NestedNumbers[]
const val: NestedNumbers = [3, 4, [5, 6, [7], 59], 221]
//another example
type RecursiveObject = {
  name: string;
  children?: RecursiveObject[];
};
const recursiveData = [
  {
    name: 'First',
    children: [
      {
        name: 'Second',
        children: [
          {
            name: 'Third',
            children: [
              {
                name: 'Fourth',
                children: [
                  {
                    name: 'Fifth',
                    children: [
                      // On and on...
                    ],
                  },
                ],
              },
            ],
          },
        ],
      },
    ],
  },
];
//Another example to implement type for json
type JSONPrimitive = string | number | boolean | null
type JSONValue = JSONArray | JSONObject | JSONPrimitive
type JSONObject = { [k: string]: JSONValue }
type JSONArray = JSONValue[]

Popularity 9/10 Helpfulness 4/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Jul 11 2022

Testy Toad

0 Answers Avg Quality 2/10

Typescript recursive type

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