@automattic/calypso-products/src/is-unlimited-themes.ts

This module contains information about the various products sold within calypso, such as product slugs, plan intervals, etc.

import { camelOrSnakeSlug } from './camel-or-snake-slug';
import type { WithCamelCaseSlug, WithSnakeCaseSlug } from './types';

export function isUnlimitedThemes( product: WithCamelCaseSlug | WithSnakeCaseSlug ): boolean {
	return 'unlimited_themes' === camelOrSnakeSlug( product );
}