#no-unsafe-argument

#Configuration

import { defineConfig, ts } from '@rslint/core';

export default defineConfig([
  ts.configs.recommended,
  {
    rules: {
      '@typescript-eslint/no-unsafe-argument': 'error',
    },
  },
]);

#Rule Details

Disallow calling a function with a value with type any.

The any type in TypeScript is a dangerous escape hatch from the type system. Passing an any-typed value as an argument to a function defeats the purpose of the parameter's type safety. This rule flags cases where any-typed values are passed as arguments, including spread arguments.

Like typescript-eslint, this rule checks any, any[], and concrete tuple spreads. Other iterable spreads, including Set<any>, arrays with generic element types such as Set<any>[], and unresolved generic Parameters<T> spreads, are ignored without advancing the parameter position used to check later arguments.

Examples of incorrect code for this rule:

declare function foo(arg: string): void;
const anyVal: any = 'hello';
foo(anyVal);

declare function bar(...args: string[]): void;
const anyArray: any[] = [];
bar(...anyArray);

Examples of correct code for this rule:

declare function foo(arg: string): void;
foo('hello');

declare function bar(arg: any): void;
bar(value); // parameter already typed as any

declare function baz(...args: string[]): void;
const strArray: string[] = [];
baz(...strArray);

#Original Documentation

• typescript-eslint: no-unsafe-argument
• Source code