Method validateMessage

src/lib/picker-injector.ts:226–239

* Validate a postMessage event * * Checks if a message event is valid and from an expected source

(
    event: MessageEvent,
    expectedTypes: string[]
  )

   * Checks if a message event is valid and from an expected source
   */
  static validateMessage(
    event: MessageEvent,
    expectedTypes: string[]
  ): boolean {
    if (!event.data || typeof event.data !== 'object') {
      return false;
    }

    if (!event.data.type || typeof event.data.type !== 'string') {
      return false;
    }

    return expectedTypes.includes(event.data.type);
  }
}

/**