Assets and sound

Declare package-relative assets in manifest.json. They are validated and decoded before the entry module evaluates, so first use does not stall a frame.

import { assets } from "fumo:assets";
import { sound } from "fumo:sound";

const settings = assets.loadJson("data/settings.json");
const text = assets.loadText("data/message.txt");
const marker = assets.loadTexture("images/marker.png");
const notify = sound.load("sounds/notify.wav");

Supported resources:

• PNG, JPEG, WebP when a Windows WIC WebP codec is available, and BMP
• PCM, float, and extensible WAV
• JSON and text-like files

Textures produce stable package-owned handles. GPU views are created lazily, released on device loss, and recreated from the decoded cache. Sounds are played from cached memory with sound.play(handle).

Assets are size- and dimension-limited, canonicalized inside the package, and removed when the package unloads. A package cannot use another package’s handle.