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Rslint

    no-unnecessary-type-arguments

    Configuration

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

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

    Rule Details

    Disallow type arguments that are equal to the default.

    If a type parameter has a default value and an explicit type argument provides the same type, the argument is redundant and can be omitted for cleaner code.

    Examples of incorrect code for this rule:

    function f<T = number>() {}
f<number>(); // number is the default, can be omitted

type Foo<T = string> = T[];
const x: Foo<string> = []; // string is the default

class Bar<T = boolean> {}
new Bar<boolean>(); // boolean is the default

    Examples of correct code for this rule:

    function f<T = number>() {}
f(); // uses default
f<string>(); // overrides default

type Foo<T = string> = T[];
const x: Foo = [];
const y: Foo<number> = [];

    Original Documentation