type-alias-indirection

a file that exists only to alias another type

Deterministic checkadvisory by defaultbasecode

The argument

Type Alias Indirection

Don't create a file just to alias another type (export type FilterOptions = TableFilterState) — use the original directly; if the semantic distinction matters, a comment at the usage site beats indirection.

The proof

fail

import type { TableFilterState } from './TableFilterState';

// A whole file to give one type a second name. A reader now has to follow the
// alias to learn nothing new.
export type FilterOptions = TableFilterState;

pass

export interface TableFilterState {
	query: string;
	page: number;
}

Turn it down

Both lines go in your lightsout.config.json.

"standards-checks": { "type-alias-indirection": "advisory" }

"standards-checks": { "type-alias-indirection": "off" }