vue-cli从2升级到3报错error 404 Not Found: @wry/context@^0.4.0

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vue3出来了，想尝尝鲜。

于是按官方的方法卸载2安装3.

npm uninstall vue-cli -gnpm install -g @vue/cli

但是报错了 error 404 Not Found: @wry/context@^0.4.0

一脸懵逼。。。

网上搜索之，并没有什么参考资，只得自己一步一步排除。

一，于是检查Node.js版本，推荐 8.11.0+

node -v

没有问题

二，删掉原来node全局配置的vue-cli并使用管理员的cmd

还是存在问题

解决办法： nrm的基本用法

原来我使用了nrm 管理 npm源的问题

设置了 npm 实际是指向了淘宝的

将源改为官方的

重新安装：

npm install -g @vue/cli

D:\>nrm use npm Registry has been set to: https://registry.npmjs.org/D:\>npm install -g @vue/cli
npm WARN deprecated joi@14.3.1: This module has moved and is now available at @hapi/joi. Please update your dependencies as this version is no longer maintained an may contain bugs and security issues.
npm WARN deprecated topo@3.0.3: This module has moved and is now available at @hapi/topo. Please update your dependencies as this version is no longer maintained an may contain bugs and security issues.
npm WARN deprecated hoek@6.1.3: This module has moved and is now available at @hapi/hoek. Please update your dependencies as this version is no longer maintained an may contain bugs and security issues.
npm WARN deprecated cross-spawn-async@2.2.5: cross-spawn no longer requires a build toolchain, use it instead
D:\Program Files\nodejs\node_global\vue -> D:\Program Files\nodejs\node_global\node_modules\@vue\cli\bin\vue.js> core-js@3.1.2 postinstall D:\Program Files\nodejs\node_global\node_modules\@vue\cli\node_modules\core-js
> node -e "try { require('./scripts/postinstall'); } catch (e) { /* empty */ }"Thank you for using core-js ( https://github.com/zloirock/core-js )!Please consider supporting of core-js on Open Collective or Patreon:
> https://opencollective.com/core-js
> https://www.patreon.com/zloirockAlso, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)> protobufjs@6.8.8 postinstall D:\Program Files\nodejs\node_global\node_modules\@vue\cli\node_modules\protobufjs
> node scripts/postinstall> nodemon@1.19.0 postinstall D:\Program Files\nodejs\node_global\node_modules\@vue\cli\node_modules\nodemon
> node bin/postinstall || exit 0Love nodemon? You can now support the project via the open collective:
> https://opencollective.com/nodemon/donatenpm WARN rollback Rolling back node-pre-gyp@0.12.0 failed (this is probably harmless): EPERM: operation not permitted, lstat 'D:\Program Files\nodejs\node_global\node_modules\@vue\cli\node_modules\fsevents\node_modules'
npm WARN ts-node@8.1.0 requires a peer of typescript@>=2.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\@vue\cli\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})+ @vue/cli@3.7.0
added 677 packages from 508 contributors in 79.482s

安装成功。