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Typescript ReturnType

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Azizul7m answered on October 6, 2021 Popularity 10/10 Helpfulness 4/10

answer Typescript ReturnType

related typescript type of return value of function

related typescript get return type of function

related Declare return type in typescript function

Typescript ReturnType

Comment

function add(a: number, b: number): number {
  return a + b;
}

type AddReturnType = ReturnType<typeof add>;
// type AddReturnType = number;

// ---

function addStr(a: string, b: string): string{
  return a + b;
}

type AddReturnType2 = ReturnType<typeof addStr>;
// type AddReturnType2 = string;

Popularity 10/10 Helpfulness 4/10 Language typescript

Source: dev.to

Tags: return-type typescript

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Contributed on Apr 10 2023

Azizul7m

0 Answers Avg Quality 2/10

Closely Related Answers

typescript type of return value of function

Comment

// TypeScript 2.8 onwards
const foo = (): FooReturnType => {
};

type returnType = ReturnType<typeof foo>;
// returnType = FooReturnType

Popularity 10/10 Helpfulness 5/10 Language typescript

Source: stackoverflow.com

Tags: function functio

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Contributed on Jan 25 2023

Obedient Oyster

0 Answers Avg Quality 2/10

typescript get return type of function

Comment

type T10 = ReturnType<() => string>;  // string
type T11 = ReturnType<(s: string) => void>;  // void
type T12 = ReturnType<(<T>() => T)>;  // {}
type T13 = ReturnType<(<T extends U, U extends number[]>() => T)>;  // number[]

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: stackoverflow.com

Tags: function functio

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Contributed on Jan 14 2023

jejbuitenhuis

0 Answers Avg Quality 2/10

Declare return type in typescript function

Comment

functionName() : ReturnType { ... }

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: stackoverflow.com

Tags: declare

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Contributed on Oct 06 2021

Strange Swiftlet

0 Answers Avg Quality 2/10

Typescript ReturnType

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Typescript ReturnType

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typescript type of return value of function

typescript get return type of function

Declare return type in typescript function

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