npm install urijs

{
  "compilerOptions": {
    // 允许调用js
    "allowJs": true
  }
}

import * as URL from 'urijs'

// get请求
getRequest(url: string, params: any): Promise<any> {
    //...
    //把any转为key=value&key=value...
    url=url+'?'+URL.buildQuery(params);
    //...
}