Why does annotating this object with a Record type remove Intellisense?

I am creating a data-file that looks like this:

interface ISprite {  textureName: string,  frame: Frame,  origin: Vec2,  zIndex?: number}export let sprites: Record<string, ISprite> = {  monster: {    textureName: "monster",    frame: new Frame(0, 0, 32, 41),    origin: new Vec2(16, 28),    zIndex: -1  },  player: {    textureName: "player",    frame: new Frame(0, 0, 32, 32),    origin: new Vec2(15, 32)  }};

If I then try to import this data file from another file like so:

import { sprites } from "../data/sprites";

And then try to access a property like this:

let player = sprites.player;

Then I don't get Intellisense (code completion) when I type sprites.

I noticed, however, that if I remove the Record<string, ISprite> annotation from the sprites variable declaration that I do get intellisense.

However, I believe I require this annotation, because one of my functions only takes ISprite types, and I don't want to instead make it take an any.

Is it possible to maintain the strong typing while also having code completion?