A single index object is type IndexObject and a collection of index objects is type IndexObjects.

export type IndexObject = {
	title: string;
	description: string;
	date_updated: string | Date;
	tags: string[];
	draft?: boolean | null | undefined;
	hidden?: boolean | null | undefined;
	pinned?: boolean | null | undefined;
	content: string;
	locale: string;
	slug: string;
};

export type IndexObjects = Record<string, IndexObject>;

{
    "1": {
        "title": "A better way to dispose objects",
        "description": "This article explains to use...",
        "date_updated": "2025-11-21T00:00:00.000Z",
        "tags": [
            "visual-rpg"
        ],
        "draft": false,
        "hidden": false,
        "pinned": true,
        "content": "An often-overlooked feature of ...",
        "locale": "en",
        "slug": "/en/kb/a-better-way-to-dispose-objects"
    },
    "2": {
        "title": "Testing connections with ASP.NET",
        "description": "This article provides a single-file...",
        "date_updated": "2025-07-11T00:00:00.000Z",
        "tags": [
            "datagate",
            "asp-net"
        ],
        "draft": false,
        "hidden": false,
        "pinned": false,
        "content": "Before you deploy a ...",
        "locale": "en",
        "slug": "/en/kb/datagate-connection-tester"
    },

The keys to the index object collection must be strings.

const id = "2";
const item = indexer[id];

Object.entries(indexObjects).forEach(([id, data]) => {
    console.log(`ID: ${id}`);
    console.log(`Title: ${data.title}`);
    console.log(`Slug: ${data.slug}`);
    console.log("-------------------");
});

const keys = Object.keys(indexObjects["1"]);