复制浏览器代码

.gitignore

@@ -0,0 +1,17 @@
+
+node_modules/
+dist/
+
+.vscode
+*.sublime-project
+*.sublime-workspace
+package-lock.json
+
+
+._*
+
+.Spotlight-V100
+.Trashes
+.DS_Store
+.AppleDouble
+.LSOverride

.prettierrc.yaml

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+jsxBracketSameLine: true
+jsxSingleQuote: true
+semi: false
+singleQuote: true
+printWidth: 80
+useTabs: false
+tabWidth: 2
+trailingComma: none
+bracketSpacing: true
+arrowParens: avoid

LICENSE

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+MIT License
+
+Copyright (c) 2018 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Readme.md

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+## node-fetch的增强版
+> node-fetch的增强版, 增加注入及数据处理, 支持多实例。
+
+
+## Node.js 兼容性
+
+因为需要支持 ESM。所以需要 Node.js >= v12.0.0,  
+
+
+
+### 示例
+
+```js
+import fetch from '@bytedo/node-fetch'
+
+
+fetch('/get_list', {body: {page: 1}})
+  .then(r => r.json())
+  .then(list => {
+    console.log(list)
+  })
+
+
+// 创建一个新的fetch实例, 可传入新的基础域名, 和公共参数等
+var f1 = fetch.create('//192.168.1.101', {headers: {token: 123456}})
+
+f1('/get_list', {body: {page: 1}})
+  .then(r => r.json())
+  .then(list => {
+    console.log(list)
+  })
+
+
+```
+
+
+
+### APIs
+
+#### 1. fetch(url[, options<Object>])
+> 发起一个网络请求, options的参数如下。 同时支持配置公共域名, 公共参数。
+
+  + method`<String>` 默认GET, 可选GET/POST/PUT/DELETE...
+  + body`<Any>` 要发送的数据, 如果是不允许有`body`的方式, 会被自动拼接到url上
+  + cache`<String>`  是否缓存, 
+  + credentials`<String/Boolean>` 是否校验
+  + signal`<Object>`  网络控制信号, 可用于中断请求
+  + timeout`<Number>`  超时时间, 默认30秒, 单位毫秒
+
+
+```js
+fetch.BASE_URL = '//192.168.1.100'
+// 1.2.0开始支持注入
+fetch.inject.request(function(conf) {
+  // 无需返回值, 但需要注意这是引用类型,不要对带个conf赋值
+  conf.headers.token = 123456
+})
+
+// 响应注入, 需要有返回值
+fetch.inject.response(function(res) {
+  return res.json()
+})
+```
+
+
+#### 2. fetch.create()
+> 创建一个新的fetch实例, 可以无限创建多个实例(用于同一个项目中有多组不同的接口)。
+
+```js
+var another = fetch.create()
+another.BASE_URL = '//192.168.1.101'
+// 新创建的实例, 也支持注入
+another.inject.request(function(conf) {
+  conf.headers.token = 123456
+})
+
+another.inject.response(function(res) {
+  return res.json()
+})
+
+```
+
+

build.js

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+/**
+ * {build}
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2021/08/09 11:59:41
+ */
+
+import Es from 'esbuild'
+
+const mode = process.argv.slice(2).shift()
+
+Es.build({
+  entryPoints: ['src/index.js'],
+  bundle: true,
+  watch: mode === 'dev' ? true : false,
+  minify: mode === 'dev' ? false : true,
+  format: 'esm',
+  outdir: 'dist'
+})

package.json

@@ -1,10 +1,12 @@
 {
+  "type": "module",
   "name": "@bytedo/node-fetch",
-  "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
+  "version": "0.0.1",
+  "description": "node-fetch的增强版, 增加注入及数据处理",
+  "main": "dist/index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "start": "node build.js dev",
+    "build": "node build.js"
   },
   "repository": {
     "type": "git",
@@ -15,5 +17,8 @@
     "fetch"
   ],
   "author": "",
+  "dependencies": {
+    "node-fetch": "^3.3.0"
+  },
   "license": "MIT"
 }

src/index.js

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+/**
+ * 新一代版本
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2020/07/31 18:59:47
+ */
+
+import nativeFetch from 'node-fetch'
+import { Format, toS } from './lib/format.js'
+
+const NOBODY_METHODS = ['GET', 'HEAD']
+const FORM_TYPES = {
+  form: 'application/x-www-form-urlencoded; charset=UTF-8',
+  json: 'application/json; charset=UTF-8',
+  text: 'text/plain; charset=UTF-8'
+}
+const ERRORS = {
+  10001: 'Argument url is required',
+  10012: 'Parse error',
+  10100: 'Request canceled',
+  10104: 'Request pending...',
+  10200: 'Ok',
+  10204: 'No content',
+  10304: 'Not modified',
+  10500: 'Internal Server Error',
+  10504: 'Connected timeout'
+}
+
+class _Request {
+  constructor(url = '', options = {}, owner) {
+    if (!url) {
+      throw new Error(ERRORS[10001])
+    }
+
+    // url规范化
+    url = url.replace(/#.*$/, '')
+
+    if (owner.BASE_URL) {
+      if (!/^([a-z]+:|\/\/)/.test(url)) {
+        url = owner.BASE_URL + url
+      }
+    }
+
+    options.method = (options.method || 'get').toUpperCase()
+
+    this._owner = owner
+
+    this.options = {
+      headers: {
+        'content-type': FORM_TYPES.form
+      },
+      body: null,
+      cache: 'default',
+      signal: null, // 超时信号, 配置该项时, timeout不再生效
+      timeout: 30000 // 超时时间, 单位毫秒, 默认30秒
+    }
+
+    if (!options.signal) {
+      this.control = new AbortController()
+      options.signal = this.control.signal
+    }
+
+    if (options.headers) {
+      let headers = this.options.headers
+      Object.assign(headers, options.headers)
+      options.headers = headers
+    }
+
+    Object.assign(this.options, options, { url })
+
+    if (owner._inject_req) {
+      owner._inject_req(this.options)
+    }
+
+    return this.__next__()
+  }
+
+  __next__() {
+    var options = this.options
+    var hasAttach = false // 是否有附件
+    var noBody = NOBODY_METHODS.includes(options.method)
+
+    /* --------------------------  1»» 请求的内容 --------------------- */
+    if (options.body) {
+      var type = typeof options.body
+      switch (type) {
+        case 'number':
+        case 'string':
+          this.__type__('text')
+          break
+        case 'object':
+          // 如果是一个 FormData对象,且为不允许携带body的方法,则直接改为POST
+          if (options.body.constructor === FormData) {
+            hasAttach = true
+            // 修正请求类型
+            if (noBody) {
+              options.method = 'POST'
+            }
+          } else {
+            for (let k in options.body) {
+              if (toS.call(options.body[k]) === '[object File]') {
+                hasAttach = true
+                break
+              }
+            }
+            // 有附件,则改为FormData
+            if (hasAttach) {
+              if (noBody) {
+                options.method = 'POST'
+              }
+              options.body = Format.mkFormData(options.body)
+            }
+          }
+          break
+      }
+    }
+    if (hasAttach) {
+      delete options.headers['content-type']
+    }
+
+    /* --------------------------  2»» 处理跨域  --------------------- */
+
+    /* ------------- 3»» 根据method类型, 处理表单数据  ---------------- */
+
+    // 拼接到url上
+    if (noBody) {
+      let tmp = Format.param(options.body)
+      if (tmp) {
+        options.url += (~options.url.indexOf('?') ? '&' : '?') + tmp
+      }
+      delete options.body
+    } else {
+      if (!hasAttach) {
+        if (~options.headers['content-type'].indexOf('json')) {
+          options.body = JSON.stringify(options.body)
+        } else {
+          options.body = Format.param(options.body)
+        }
+      }
+    }
+
+    /* -----------------   4»» 超时处理  -----------------------*/
+    if (options.timeout && options.timeout > 0) {
+      this.timer = setTimeout(_ => {
+        this.abort()
+      }, options.timeout)
+
+      delete options.timeout
+    }
+
+    /* -----------------    5»» 构造请求    ------------------- */
+    var url = options.url
+    delete options.url
+    for (let k in options) {
+      if (
+        options[k] === null ||
+        options[k] === undefined ||
+        options[k] === ''
+      ) {
+        delete options[k]
+      }
+    }
+    return nativeFetch(url, options)
+      .then(r => {
+        clearTimeout(this.timer)
+        let isSucc = r.status >= 200 && r.status < 400
+        let _type
+        if (this._owner._inject_res) {
+          r = this._owner._inject_res(r)
+          _type = toS.call(r)
+        }
+        if (isSucc) {
+          return r
+        } else {
+          if (_type === '[object Promise]') {
+            return r.then(_ => Promise.reject(_))
+          } else {
+            return Promise.reject(r)
+          }
+        }
+      })
+      .catch(e => {
+        clearTimeout(this.timer)
+        return Promise.reject(e)
+      })
+  }
+
+  abort() {
+    this.control.abort()
+  }
+
+  __type__(type) {
+    this.options.headers['content-type'] = FORM_TYPES[type]
+  }
+}
+
+function inject(target) {
+  target.inject = {
+    request(callback) {
+      target._inject_req = callback
+    },
+    response(callback) {
+      target._inject_res = callback
+    }
+  }
+}
+
+const fetch = function (url, options) {
+  return new _Request(url, options, fetch)
+}
+
+fetch.create = function () {
+  var another = function (url, options) {
+    return new _Request(url, options, another)
+  }
+  inject(another)
+  return another
+}
+
+inject(fetch)
+
+export default fetch

src/lib/format.js

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+/**
+ *
+ * @authors yutent (yutent.io@gmail.com)
+ * @date    2016-11-26 16:35:45
+ *
+ */
+
+export const toS = Object.prototype.toString
+export const encode = encodeURIComponent
+export const decode = decodeURIComponent
+
+/**
+ * 表单序列化
+ */
+function serialize(p, obj, query) {
+  var k
+  if (Array.isArray(obj)) {
+    obj.forEach(function (it, i) {
+      k = p ? `${p}[${Array.isArray(it) ? i : ''}]` : i
+      if (typeof it === 'object') {
+        serialize(k, it, query)
+      } else {
+        query(k, it)
+      }
+    })
+  } else {
+    for (let i in obj) {
+      k = p ? `${p}[${i}]` : i
+      if (typeof obj[i] === 'object') {
+        serialize(k, obj[i], query)
+      } else {
+        query(k, obj[i])
+      }
+    }
+  }
+}
+
+export const Format = {
+  mkFormData(data) {
+    let form = new FormData()
+    for (let i in data) {
+      let el = data[i]
+      if (Array.isArray(el)) {
+        el.forEach(function (it) {
+          form.append(i + '[]', it)
+        })
+      } else {
+        form.append(i, data[i])
+      }
+    }
+    return form
+  },
+  param(obj) {
+    if (!obj || typeof obj === 'string' || typeof obj === 'number') {
+      return obj
+    }
+
+    let arr = []
+    let query = function (k, v) {
+      if (/native code/.test(v)) {
+        return
+      }
+
+      v = typeof v === 'function' ? v() : v
+      v = toS.call(v) === '[object File]' ? v : encode(v)
+
+      arr.push(encode(k) + '=' + v)
+    }
+
+    if (typeof obj === 'object') {
+      serialize('', obj, query)
+    }
+
+    return arr.join('&')
+  }
+}