解决的英文（解决npm ERR! Cannot read properties of null (reading ‘pickAlgorithm‘)）
1. 复现问题
今天准备克隆Redis桌面(GUI)管理客户端 ，故按照官方文档给出的指令运行时 ，如下图所示：
但在执行指令npm install --platform=win32却报出如下图错误：
PS D:\Software\RedisDesktopManager\AnotherRedisDesktopManager> npm install --platform=win32 npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. npm WARN deprecated chokidar@2.1.8: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies npm WARN deprecated chokidar@2.1.8: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies npm WARN deprecated stable@0.1.8: Modern JS already guarantees Array#sort() is a stable sort, so this library is deprecated. See the compatibility table on MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#browser_compatibility npm WARN deprecated electron-osx-sign@0.5.0: Please use @electron/osx-sign moving forward. Be aware the API is slightly different npm WARN deprecated querystring@0.2.0: The querystring API is considered Legacy. new code should use the URLSearchParams API instead. npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details. npm WARN deprecated debug@4.1.1: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797) npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated svgo@0.7.2: This SVGO version is no longer supported. Upgrade to v2.x.x. npm WARN deprecated debug@4.1.1: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797) npm WARN deprecated svgo@1.3.2: This SVGO version is no longer supported. Upgrade to v2.x.x. npm ERR! Cannot read properties of null (reading pickAlgorithm) npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\zxy\AppData\Local\npm-cache\_logs\2022-11-04T07_24_57_963Z-debug-0.log注意看上述错误的倒数第3行 ，即Cannot read properties of null (reading pickAlgorithm)
2. 分析问题
Cannot read properties of null (reading pickAlgorithm)翻译成中文就是无法读取 null 的属性（读取 pickAlgorithm）
但是 ，我在运行指令npm install --platform=win32时 ，并没有涉及pickAlgorithm字段呀 ，于是 ，通过查找资料可得如下解决方案:
方案1重新安装node解决 ，这并没有解决我的问题 ，舍弃 。
方案2删了node models重新下 。
或者直接下载CNPM（淘宝镜像）进行安装CNPM安装办法：
npm install -g cnpm -registry=https://registry.npm.taobao.org查看cnpm是否真安装成功:
cnpm -v这种方式也没有解决我的问题 。
于是 ，使用如下第3种方案解决了我的问题 。
3. 解决问题
在终端输入指令npm cache clear --force ，如下所示： PS D:\Software\RedisDesktopManager\AnotherRedisDesktopManager> npm cache clear --force npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. npm WARN using --force Recommended protections disabled. 再次执行指令npm install --platform=win32 ，即可完成安装 ，如下所示： PS D:\Software\RedisDesktopManager\AnotherRedisDesktopManager> npm install --platform=win32 npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details. npm WARN deprecated browserslist@2.11.3: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated debug@4.1.1: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797) npm WARN deprecated uuid@3.3.2: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details. npm WARN deprecated electron-osx-sign@0.5.0: Please use @electron/osx-sign moving forward. Be aware the API is slightly different npm WARN deprecated svgo@0.7.2: This SVGO version is no longer supported. Upgrade to v2.x.x. npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated chokidar@2.1.8: Chokidar 2 does not receive security updates since 2019. Upgrade to chokidar 3 with 15x fewer dependencies npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. npm WARN deprecated svgo@1.3.2: This SVGO version is no longer supported. Upgrade to v2.x.x. added 706 packages, and changed 55 packages in 2m 93 packages are looking for funding run `npm fund` for details 输入npm start启动程序 ，如下图所示：此时 ，报出另外一个错误 ，即 Cannot find module D:\Software\RedisDesktopManager\AnotherRedisDesktopManager\node_modules\fs.realpath\index.js. Please verify that the package.json has a valid "main" entry 。
即在当前目录下找不到index.js文件 ，于是 ，我们去当前目录下区创建该文件即可：
创建index.js文件后 ，再次执行npm start指令 ，即可启动程序了 ，如下所示：
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