@illandril/foundryvtt-types/src/foundry/packages/BasePackage.d.ts

Type definitions for the Foundry VTT client, used by Illandril's modules

declare global {
  namespace foundry {
    namespace packages {
      class BasePackage extends foundry.abstract.DataModel {
        get id(): string;
        get version(): string;
      }
    }
  }
}

export type {};