COptions.ts

export interface IStringTMap<T> {
  [key: string]: T;
}

export class COptions<TProperties> {
  constructor(properties?: TProperties) {
    if (properties) {
      for (let propertyName in properties) {
        if (properties.hasOwnProperty(propertyName)) {
          Object.defineProperty(this, propertyName, {
            value: properties[propertyName],
            writable: true,
            enumerable: true
          });
        }
      }
    }
  }
}

export interface IImageZoomOptions extends IStringTMap<any> {
  zoomBy?: number;
  maxZoomLevel?: number;
  initialZoomLevel?: number;
}

export class ImageZoomOptions extends COptions<IImageZoomOptions>
  implements IImageZoomOptions {
  public initialZoomLevel: number = 1;
  public maxZoomLevel: number = 3;
  public zoomBy: number = 0.1;
}