Microsoft Windows [版本 6.1.7601] 版权所有 (c) 2009 Microsoft Corporation。保留所有权利。 G:vue>cnpm i vue-router -S 'cnpm' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 G:vue>npm install -g cnpm –registry=https://registry.npm.taobao.org npm ERR! code ENOLOCAL npm ERR! Could not install from "–registry=https: egistry.npm.taobao.org" as it does not contain a package.json file. npm ERR! A complete log of this run can be found in: npm ERR! D:Users ealmAppDataRoaming pm-cache\_logs2019-12-08T13_37_40_758Z-debug.log G:vue>node -v v12.13.1 G:vue>npm install -g install + install@0.13.0 updated 1 package in 1.087s G:vue> G:vue> G:vue>rm -r -f node_modules 'rm' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 G:vue>cpm install 'cpm' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 G:vue>cnpm install 'cnpm' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 G:vue>npm install -g cnpm –registry=https://registry.npm.taobao.org npm ERR! code ENOLOCAL npm ERR! Could not install from "–registry=https: egistry.npm.taobao.org" as it does not contain a package.json file. npm ERR! A complete log of this run can be found in: npm ERR! D:Users ealmAppDataRoaming pm-cache\_logs2019-12-08T13_40_45_806Z-debug.log G:vue>npm install -g node-gyp D:Users ealmAppDataRoaming pm ode-gyp -> D:Users ealmAppDataRoaming pm ode_modules ode-gypin ode-gyp.js + node-gyp@6.0.1 added 3 packages from 2 contributors and updated 9 packages in 32.358s G:vue>cnpm install 'cnpm' 不是内部或外部命令，也不是可运行的程序 或批处理文件。 G:vue>npm install -g cnpm –registry=https://registry.npm.taobao.org npm ERR! code ENOLOCAL npm ERR! Could not install from "–registry=https: egistry.npm.taobao.org" as it does not contain a package.json file. npm ERR! A complete log of this run can be found in: npm ERR! D:Users ealmAppDataRoaming pm-cache\_logs2019-12-08T13_44_18_594Z-debug.log G:vue>npm cache verify Cache verified and compressed (~AppDataRoaming pm-cache\_cacache): Content verified: 267 (6461740 bytes) Content garbage-collected: 21 (380630 bytes) Index entries: 405 Finished in 1.516s G:vue>npm cache clean npm ERR! As of npm@5, the npm cache self-heals from corruption issues and data extracted from the cache is guaranteed to be valid. If you want to make sure everything is consistent, use 'npm cache verify' instead. On the other hand, if you're debugging an issue with the installer , you can use `npm install --cache /tmp/empty-cache` to use a temporary cache instead of nuking the actual one. npm ERR! npm ERR! If you're sure you want to delete the entire cache, rerun this command with --force. npm ERR! A complete log of this run can be found in: npm ERR! D:Users ealmAppDataRoaming pm-cache\_logs2019-12-08T13_48_53_767Z-debug.log G:vue>npm cache clean --force npm WARN using --force I sure hope you know what you are doing. G:vue>npm install -g cnpm –registry=https://registry.npm.taobao.org npm ERR! code ENOLOCAL npm ERR! Could not install from "–registry=https: egistry.npm.taobao.org" as it does not contain a package.json file. npm ERR! A complete log of this run can be found in: npm ERR! D:Users ealmAppDataRoaming pm-cache\_logs2019-12-08T13_49_35_280Z-debug.log G:vue>npm i -g npm D:Users ealmAppDataRoaming pm px -> D:Users ealmAppDataRoaming pm ode_modules pmin px-cli.js D:Users ealmAppDataRoaming pm pm -> D:Users ealmAppDataRoaming pm ode_modules pmin pm-cli.js + npm@6.13.2 added 430 packages from 854 contributors in 61.607s G:vue>npm install -g cnpm --registry=http://registry.npm.taobao.org D:Users ealmAppDataRoaming pmcnpm -> D:Users ealmAppDataRoaming pm ode_modulescnpmincnpm + cnpm@6.1.0 added 680 packages from 938 contributors in 65.011s G:vue>
npm升级后，npm install 报错了，这就尴尬了。
Google了一下在这里(https://github.com/npm/npm/issues/16861)找到了解决方案：
里面各种解决方案，让Try这个命令Try那个命令，看着一脸懵逼不知道该用那个命令，浏览评论的时候发现“npm cache verify”这条命令帮助了不少人，然后果断在iterm2执行了，嗯，莫名其妙的好了。
评论里的命令有下面这些：
npm cache verify
npm cache clean
npm cache clean --force
npm i -g npm
grep -ir "sha1-xxxxxxxxxxxxxxxx" ~/.npm
实在不行就一条一条执行试试，看那个能帮到你