init

.babelrc

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+{
+  "presets": [
+    [
+      "@babel/env",
+      {
+        "modules": false
+      }
+    ]
+  ]
+}

.gitignore

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+node_modules
+package-lock.json
+dist
+.DS_Store

.prettierrc

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+{
+  "tabWidth": 2,
+  "singleQuote": true,
+  "semi": false
+}

README.md

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+可能是设计最优雅的微信小程序API的Promise转化方式，支持所有wx对象中以下形式的API接口：
+```
+| 属性     | 类型     | 默认值 | 是否必填 | 说明                                             |
+| -------- | -------- | ------ | -------- | ------------------------------------------------ |
+| success  | function |        | 否       | 接口调用成功的回调函数                           |
+| fail     | function |        | 否       | 接口调用失败的回调函数                           |
+| complete | function |        | 否       | 接口调用结束的回调函数（调用成功、失败都会执行） |
+| ...      | ...      |        | 是       | ...                                              |
+
+```
+
+使用Proxy + ES Promise实现，核心代码只有10行
+
+## 安装
+```
+$ npm i wx-api-promisify
+```
+
+## 示例
+若您的工程支持，推荐使用async/await。以下为获取用户信息->下载文件->保存到相册的Promise示例：
+```
+import wxPromise from 'wx-api-promisify'
+
+Page({
+  ...
+  getUserInfo() {
+    wxPromise.getUserInfo()
+      .then(({ userInfo: { avatarUrl } }) => wxPromise.downloadFile({ url: avatarUrl }))
+      .then(({ tempFilePath }) => wxPromise.saveImageToPhotosAlbum({ filePath: tempFilePath })
+  },
+})
+```

index.js

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+const proxy = new Proxy(wx || {}, {
+  get: (target, property) => {
+    if (!Object.prototype.hasOwnProperty.call(target, property)) {
+      if (property === '__esModule') return
+      throw new ReferenceError(`Property ${property} not exists.`)
+    }
+    return options =>
+      new Promise((resolve, reject) => {
+        target[property](
+          Object.assign({}, options, {
+            success: resolve,
+            fail: reject
+          })
+        )
+      })
+  }
+})
+
+export default proxy

package.json

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+{
+  "name": "wx-api-promisify",
+  "version": "0.1.2",
+  "description": "promisify微信小程序API",
+  "main": "dist/wx-api-promisify.umd.js",
+  "module": "dist/wx-api-promisify.esm.js",
+  "scripts": {
+    "dev": "rollup -c -w",
+    "build": "rollup -c",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/vv13/wx-api-promisify.git"
+  },
+  "keywords": [
+    "promise"
+  ],
+  "author": "vv13",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/vv13/wx-api-promisify/issues"
+  },
+  "homepage": "https://github.com/vv13/wx-api-promisify#readme",
+  "files": [
+    "dist"
+  ],
+  "dependencies": {},
+  "devDependencies": {
+    "@babel/core": "^7.1.5",
+    "@babel/plugin-external-helpers": "^7.0.0",
+    "@babel/preset-env": "^7.1.5",
+    "rollup": "^0.67.0",
+    "rollup-plugin-commonjs": "^9.2.0",
+    "rollup-plugin-node-resolve": "^3.4.0"
+  }
+}

rollup.config.js

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+import resolve from 'rollup-plugin-node-resolve';
+import pkg from './package.json';
+
+export default {
+  input: 'index.js',
+  output: [
+    {
+      name: 'wxApiPromisify',
+      file: pkg.main,
+      format: 'umd'
+    },
+    {
+      name: 'wxApiPromisify',
+      file: pkg.module,
+      format: 'es'
+    }
+  ],
+  plugins: [
+    resolve({
+      main: true,
+      browser: true
+    }),
+  ]
+};