mux-fetch/src/blockFetch.ts

import { fetchWebapi, fastFetchFactory } from "./fetch";
import { FORM_DATA_TYPE } from "./constant";
import blockConfigMap from "./blockConfig";
import { GlobalConfig } from "./@types/";
import { invariant, isString } from "mux-lib";

export const fetch = (...args) => {
  let namespace, api, options;
  if (!args.length) {
    invariant(false, "[fetch] fetch need one argument at least");
  }
  /**
   * 第一种，简单的调用接口
   * @example
   * fetch(api)
   */

  if (args.length === 1) {
    api = args[0];
    options = {};
  }

  /**
   * 第二种，调用接口带参数
   * @example
   * 1. fetch(api,options)
   * 2. fetch(namespace,api)
   *  */

  if (args.length === 2) {
    if (isString(args[1])) {
      namespace = args[0];
      api = args[1];
    } else {
      api = args[0];
      options = args[1];
    }
  }

  /**
   * 第三种，调用接口加上区块的参数
   * @example
   * fetch(namespace,api,options)
   */

  if (args.length === 3) {
    namespace = args[0];
    api = args[1];
    options = args[2];
  }

  if (!namespace) {
    return fetchWebapi(api, options);
  } else {
    const getConfig = (): GlobalConfig => blockConfigMap.get(namespace);
    return fetchWebapi(api, options, getConfig);
  }
};

// 快捷方法
fetch.get = fastFetchFactory(fetch, { method: "GET" });
fetch.post = fastFetchFactory(fetch, { method: "POST" });
fetch.put = fastFetchFactory(fetch, { method: "PUT" });
fetch.delete = fastFetchFactory(fetch, { method: "DELETE" });
fetch.upload = fastFetchFactory(fetch, {
  method: "POST",
  headersType: FORM_DATA_TYPE
});