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Rslint

    consistent-indexed-object-style

    Configuration

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

export default defineConfig([
  ts.configs.recommended,
  {
    rules: {
      '@typescript-eslint/consistent-indexed-object-style': 'error',
    },
  },
]);

    Rule Details

    Require or disallow the Record type. TypeScript supports defining object types with an index signature or using the built-in Record utility type. This rule enforces a consistent style.

    The rule supports two modes: "record" (default) prefers Record<string, T> over index signatures, and "index-signature" prefers index signatures over Record.

    Examples of incorrect code for this rule (with default "record" option):

    interface Foo {
  [key: string]: unknown;
}

type Bar = {
  [key: number]: string;
};

    Examples of correct code for this rule (with default "record" option):

    type Foo = Record<string, unknown>;
type Bar = Record<number, string>;

interface Baz {
  [key: string]: unknown;
  name: string; // has other members, so it's fine
}

    Original Documentation