code: function Request(options$$1) {
  
      this.body = null;
      this.params = {};
  
      assign(this, options$$1, {
          method: toUpper(options$$1.method || 'GET')
      });
  
      if (!(this.headers instanceof Headers)) {
          this.headers = new Headers(this.headers);
      }
  }
docs: HTTP Request.