JS.TS.ADJACENT.OVERLOAD.SIGNATURES

Require that member overloads be consecutive

Grouping overloaded members together can improve readability of the code.

Rule Details

This rule aims to standardize the way overloaded members are organized.

Incorrect

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declare namespace Foo {
  export function foo(s: string): void;
  export function foo(n: number): void;
  export function bar(): void;
  export function foo(sn: string | number): void;
}

type Foo = {
  foo(s: string): void;
  foo(n: number): void;
  bar(): void;
  foo(sn: string | number): void;
};

interface Foo {
  foo(s: string): void;
  foo(n: number): void;
  bar(): void;
  foo(sn: string | number): void;
}

class Foo {
  foo(s: string): void;
  foo(n: number): void;
  bar(): void {}
  foo(sn: string | number): void {}
}

export function foo(s: string): void;
export function foo(n: number): void;
export function bar(): void;
export function foo(sn: string | number): void;

Correct

Copy

declare namespace Foo {
  export function foo(s: string): void;
  export function foo(n: number): void;
  export function foo(sn: string | number): void;
  export function bar(): void;
}

type Foo = {
  foo(s: string): void;
  foo(n: number): void;
  foo(sn: string | number): void;
  bar(): void;
};

interface Foo {
  foo(s: string): void;
  foo(n: number): void;
  foo(sn: string | number): void;
  bar(): void;
}

class Foo {
  foo(s: string): void;
  foo(n: number): void;
  foo(sn: string | number): void {}
  bar(): void {}
}

export function bar(): void;
export function foo(s: string): void;
export function foo(n: number): void;
export function foo(sn: string | number): void;

Options

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// .eslintrc.json
{
  "rules": {
    "@typescript-eslint/adjacent-overload-signatures": "error"
  }
}

This rule is not configurable.

When Not To Use It

If you don't care about the general structure of the code, then you will not need this rule.