app/node_modules/@babylonjs/core/Materials/standardMaterial.decalMap.d.ts

import type { Nullable } from "../types.js";
import { DecalMapConfiguration } from "./material.decalMapConfiguration";
declare module "./standardMaterial" {
    interface StandardMaterial {
        /** @internal */
        _decalMap: Nullable<DecalMapConfiguration>;
        /**
         * Defines the decal map parameters for the material.
         */
        decalMap: Nullable<DecalMapConfiguration>;
    }
}