interface HandSummary {
  chi: string;
  cun: string;
  guan: string;
  summary: string[];
}

type HandKeys = 'chen' | 'chi' | 'fu' | 'hua' | 'kong' | 'ruan' | 'shi' | 'shu' | 'xi' | 'xian';

export class Bridge extends EventTarget {
  public static getInstance(): Bridge;

  public static pulse(userId: string): Promise<{
    measureId: string;
    summaryLabel: {
      summary?: HandSummary['summary'];
      left?: HandSummary;
      right?: HandSummary;
    };
    summaryValue: Record<HandKeys, number[]>;
    time: string;

    appId?: string;
    userId?: string;
    url: string;
    report: string;
  }>;

  public static print(): Promise<void>;
  public static print(params: { url?: string }): Promise<void>;
}