Typescript 将值添加到具有不同类型的对象的元素

我之前在第一个循环中遇到了问题，因为迭代键的问题，现在用下面的代码解决了这个问题.PopupPopsDefined和PopupProps两种类型是相同的，除了PopupProps允许undefined.这就解决了我遇到的其他元素无法接受的键的问题.这里的代码都正确运行，我只是想更好地完成最后一部分，而不需要case语句和硬编码赋值.

mergeTool(baseConfig: PopupPropsDefined, overrides: PopupProps): PopupPropsDefined {
    const keys = Object.keys(overrides) as (keyof PopupProps)[];
    keys.forEach((key) => {
      const newValue = overrides[key];
      if (typeof newValue !== 'undefined') {
        this.setPropValue(key, baseConfig, newValue);
      }
    });
    return baseConfig;
  }

这些类型定义为:

export interface PopupProps {
  arrowDistance?: number;
  arrowHeight?: number;
  arrowOffset?: number;
  arrowWidth?: number;
  cornerRadius?: number;
  paddingX?: number;
  paddingY?: number;
  shiftX?: number;
  shiftY?: number;
  zIndex?: number;
  isManual?: boolean;
  isModal?: boolean;
  isTooltip?: boolean;
  logging?: boolean;
  debugMode?: boolean;
  direction?: PopupDirection;
  eventOff?: keyof HTMLElementEventMap;
  eventOn?: keyof HTMLElementEventMap;
  positioner?: string;
}

export interface PopupPropsDefined {
  arrowDistance: number;
  arrowHeight: number;
  arrowOffset: number;
  arrowWidth: number;
  cornerRadius: number;
  paddingX: number;
  paddingY: number;
  shiftX: number;
  shiftY: number;
  zIndex: number;
  isManual: boolean;
  isModal: boolean;
  isTooltip: boolean;
  logging: boolean;
  debugMode: boolean;
  direction: PopupDirection;
  eventOff: keyof HTMLElementEventMap;
  eventOn: keyof HTMLElementEventMap;
  positioner: string;
}

下面是我想用更好的方式来做的丑陋代码.有没有什么方法可以检测我复制值的对象的类型，这样我就不必像这样有switch语句了.部分原因是它是如此的不可维护，如果我添加一个新属性，我必须记住将其添加到这里.

  setPropValue(key: string, config: PopupPropsDefined, value: number | boolean | string) {
    switch (key) {
      case 'arrowDistance':
      case 'arrowHeight':
      case 'arrowOffset':
      case 'arrowWidth':
      case 'cornerRadius':
      case 'paddingX':
      case 'paddingY':
      case 'shiftX':
      case 'shiftY':
      case 'zIndex':
        config[key] = <number>value;
        break;
      case 'isModal':
      case 'isTooltip':
      case 'logging':
      case 'debugMode':
      case 'isManual':
        config[key] = <boolean>value;
        break;
      case 'direction':
        config.direction = value as PopupDirection;
        break;
      case 'eventOff':
      case 'eventOn':
        config[key] = value as keyof HTMLElementEventMap;
        break;
      case 'positioner':
        config.positioner = <string>value;
        break;
    }
  }