Function fetch

fetch(url: string, options?: {
    body?: string;
    headers?: {
        [key: string]: string;
    };
    method?: "get" | "post" | "delete" | "put" | "head";
}): Promise<HttpResponse>
发起http请求

Returns
Http响应对象
Parameters
- url: string
- Optional options: {
      body?: string;
      headers?: {
          [key: string]: string;
      };
      method?: "get" | "post" | "delete" | "put" | "head";
  }
  - Optional body?: string
  - Optional headers?: {
    [key: string]: string;
    }
    - [key: string]: string
  - Optional method?: "get" | "post" | "delete" | "put" | "head"
Returns Promise<HttpResponse>