imobile_for_reactnative/NativeModule/interfaces/utils/HttpRequest/Fetch.ts

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import { HttpRequest, HttpRequestParam, HttpResponse, HttpRequestFailed } from './HttpRequest'

/** node 原生fetch封装的网络请求接口*/
export class Fetch implements HttpRequest {

  request = async (param: HttpRequestParam): Promise<HttpResponse | HttpRequestFailed> => {

    const fetchPromise = fetch(param.url, {
      method: param.method,
      headers: param.headers,
      body: param.body,
    })
    try {
      const response = await Promise.race([fetchPromise, timeout(40)])

      if(response === 'timeout') {
        return { error: 'timeout' }
      }
      const pJson = response.json()
      const pText =  response.clone().text()
      return {
        headers: response.headers,
        status: response.status,
        json: () => pJson,
        text: () => pText,
      }
    } catch (e) {
      return { error: 'error'}
    }

  }
}

/**
 * 超时返回‘timeout’
 * @param sec 超时秒数
 */
function timeout(sec: number): Promise<'timeout'> {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve('timeout')
    }, 1000 * sec)
  })
}