/** * @module ol/Disposable */ /** * @classdesc * Objects that need to clean up after themselves. */ class Disposable { constructor() { /** * The object has already been disposed. * @type {boolean} * @protected */ this.disposed = false; } /** * Clean up. */ dispose() { if (!this.disposed) { this.disposed = true; this.disposeInternal(); } } /** * Extension point for disposable objects. * @protected */ disposeInternal() {} } export default Disposable;