backend/libs/three/renderers/webgl/WebGLProperties.js

function WebGLProperties() {
	let properties = new WeakMap();

	function get(object) {
		let map = properties.get(object);

		if (map === undefined) {
			map = {};
			properties.set(object, map);
		}

		return map;
	}

	function remove(object) {
		properties.delete(object);
	}

	function update(object, key, value) {
		properties.get(object)[key] = value;
	}

	function dispose() {
		properties = new WeakMap();
	}

	return {
		get: get,
		remove: remove,
		update: update,
		dispose: dispose,
	};
}

export { WebGLProperties };