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@voyo/http

v4.0.0

Published

frontend fetch request library, zero runtime dependencies

Downloads

384

Readme

@voyo/http

基于原生 fetch 的轻量前端请求库,零运行时依赖,返回 Promise

相比旧版:移除 rxjs 依赖,用 fetch 替换 XMLHttpRequest,包体积极大减小;接口从 Observable 改为 Promise,可直接 async/await 调用。

安装

npm install @voyo/http

快速使用

import { VoyoHttp } from "@voyo/http";

const http = new VoyoHttp();

http.initPlugin();

// ⚠️ initPlugin() 之后再调用 setHost/setGlobalHeader/setWithCredentials
// (它们由内置的 VoyoBasePlugin 在 initPlugin 时挂载)
http.setHost("http://localhost:3000");

// 使用 async/await 调用
const { result, statusCode } = await http.fetch({
  method: "get",
  path: "/hello",
});

请求示例

JSON body

await http.fetch({
  method: "post",
  path,
  json: { findId: "xxx" },
});

query 参数

await http.fetch({
  method: "get",
  path,
  query: { findId: "xxx" },
});

下载 / ArrayBuffer

await http.fetch({
  method: "post",
  path,
  responseType: "arraybuffer",
});

上传 FormData

await http.fetch({
  method: "post",
  path,
  formData,
});

上传 Blob

await http.fetch({
  method: "post",
  path,
  blob,
});

设置全局请求头

http.setGlobalHeader("Authorization", "Bearer xxx");

withCredentials

http.setWithCredentials(false);

完整 URL

上面的示例均配合 setHost 使用 path,此时请求地址为 host + path。若需临时请求一个完整地址(不依赖已配置的 host),直接传 url

await http.fetch({
  method: "get",
  url: "https://other-server.com/data",
});

缓存插件

import { VoyoHttp, VoyoCachePlugin } from "@voyo/http";

const http = new VoyoHttp();
http.addPlugin(new VoyoCachePlugin({ defaultExpireSeconds: 60 }));
http.initPlugin();

await http.fetch({
  method: "get",
  path: "/payOrder/queryList",
  query: { id },
  cacheOpts: {
    key: `query-${id}`,
    expireSeconds: 60,
    onDestroy: (httpParams) =>
      !!httpParams.path?.match("payOrder/submit"),
    shouldCache: (result) => result.statusCode === 200,
  },
});

当匹配 onDestroy 条件的请求发出时,对应缓存自动失效。

中间件

后添加的中间件在外层,可拦截请求/响应、重试、加日志等:

import { VoyoHttp } from "@voyo/http";

const http = new VoyoHttp();
http.initPlugin();

// 后执行的_addMiddleware 在外层
http.addMiddleware(async (params, next) => {
  const start = Date.now();
  const result = await next();
  console.log(`${params.httpParams.path} → ${result.statusCode} (${Date.now() - start}ms)`);
  return result;
});

// 重试中间件:5xx 自动重试(timeout 会抛错,按需加 try/catch)
http.addMiddleware(async (params, next) => {
  for (let i = 0; i < 3; i++) {
    const result = await next();
    if (result.statusCode < 500) return result;
  }
  throw new Error("max retries exceeded");
});

next() 返回 HttpSuccessResult;抛错则中断整条链路。中间件在插件 before/after 之后执行。

插件系统

内置 VoyoBasePlugin 处理 URL/Header/Body 组装,注册后可自定义。

顺序约束:先 addPlugin(...)initPlugin()setHost / setGlobalHeader / setWithCredentialsinitPlugin() 之后调用。

import { VoyoHttpPlugin } from "@voyo/http";

const myPlugin: VoyoHttpPlugin = {
  name: "my-plugin",
  // priority 不要超过 100,内置插件已占用 99(cache)和 100(base)
  priority: 50,
  before: async ({ http, httpParams }) => {
    // 请求前处理
  },
  after: async (result) => {
    // 请求后处理
    result.processed = true;
  },
};

http.addPlugin(myPlugin);
http.initPlugin();

插件生命周期

| hook | 说明 | |---|---| | patchCall | 初始化时挂载方法到 http 实例 | | before | 请求前,返回 { http } 可短路跳过发送 | | registryHooks | 注册底层钩子(progress/afterCompletion/errorTrigger) | | after | 请求后,可修改 result(如 statusCode、result) |

API

VoyoHttp

class VoyoHttp {
  fetch(params: HttpParams): Promise<HttpSuccessResult>;
  setHost(v: string): void;
  setGlobalHeader(k: string, v: any, priority?: number): void;
  setWithCredentials(v: boolean): void;
  addPlugin(plugin: VoyoHttpPlugin): void;
  removePlugin(name: string): void;
  addPluginDynamic(plugin: VoyoHttpPlugin): void;
  initPlugin(): void;
}

HttpParams

| 字段 | 类型 | 说明 | |---|---|---| | method | "get" \| "post" \| "put" \| "delete" | | | url | string | 完整 URL,与 path 互斥 | | path | string | 相对路径,配合 setHost | | query | Record<string, any> | query 参数 | | json | object | JSON body,自动 stringify | | body | BodyInit | 原始 body | | formData | FormData | 表单 | | blob | Blob | Blob body | | arrayBuffer | ArrayBuffer | 二进制 body | | headers | HttpHeaders | 自定义请求头 | | responseType | "json" \| "text" \| "arraybuffer" \| "blob" | 默认 json | | withCredentials | boolean | 默认 true | | timeout | number | 毫秒 | | cacheOpts | { key, expireSeconds?, shouldCache?, onDestroy? } | 缓存配置 |

HttpSuccessResult

{
  http: Http;          // 内部 req/res
  result: any;         // 解析后的响应体
  statusCode: number;  // HTTP 状态码
}

测试

npm test