@typescript-eslint/adjacent-overload-signatures

When a function's overloads are spread across a file, a reader who finds the first group thinks they've seen every way to call it, and misses the one further down.

The rule looks at functions in a file, block, or namespace, and at the members of classes, interfaces, and object types. A static method and an instance method with the same name are different methods.

Configure

Off by default. To turn it on:

[lint.rules]
"@typescript-eslint/adjacent-overload-signatures" = "error" # or "warn"

Examples

Reported:

interface Storage {
  get(key: string): string;
  clear(): void;
  get(key: string, fallback: string): string;
}

declare function parse(input: string): number;
declare function format(value: number): string;
declare function parse(input: Uint8Array): number;

Not reported:

interface Storage {
  get(key: string): string;
  get(key: string, fallback: string): string;
  clear(): void;
}

class Cache {
  static create(): Cache {
    return new Cache();
  }
  size = 0;
  create(): void {}
}