tostershmoster

function updateObjectValues(
  defaultSettings: IDefSettings,
  userSettings: IUserSettings,
): IViewSettings | IModelSettings {
  const c: IViewSettings | IModelSettings = {};

  const keys: string[] = Object.getOwnPropertyNames(defaultSettings);

  keys.forEach((key) => {
    c[key] = key in userSettings
      ? userSettings[key as keyof IUserSettings]
      : defaultSettings[key as keyof IDefSettings];
  });

  return c;
}

interface IModelSettings {
  min: number;
  max: number;
  from: number;
  to: number;
  step: number;
  stepInPrecents: number;
  currentPos: number;
  curPosInPoints: number | undefined;
  posWithStepInPercents: number;

  [index: string]: string | number | undefined;
}

interface IViewSettings {
  range: boolean;
  scale: boolean;
  tooltips: boolean;
  vertical: boolean;
  confpanel: boolean;
  bar: boolean;

  thumbMarginFrom: number;
  thumbMarginTo: number;
  rangeMarginFrom: number;
  rangeMarginTo: number;

  [index: string]: string | boolean | number;
}