本次总结 ：升级npm版本时，需要将npm的源切换到官方源。
本次总结 ：npm版本升级后，可能需要进行node的升级
在使用npm install项目时报下方错误
npm WARN read-shrinkwrap This version of npm is compatible with lockfileVersion@
1, but package-lock.json was generated for lockfileVersion@2. I'll try to do my
best with it!
npm ERR! Unexpected token < in JSON at position 16 while parsing near '
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR! <!DOCTYPE html>
npm ERR! <ht...'
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\LJQ\AppData\Roaming\npm-cache\_logs\2022-08-14T03_27_34_99
5Z-debug.log
从报错上看，应该是需要对npm的版本进行升级
在百度找到npm的升级命令是：npm install -g npm ，但是执行时依然报错
C:\Users\LJQ>npm install -g npm
npm ERR! Unexpected token < in JSON at position 16 while parsing near '
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR!
npm ERR! <!DOCTYPE html>
npm ERR! <ht...'
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\LJQ\AppData\Roaming\npm-cache\_logs\2022-08-14T03_28_53_56
6Z-debug.log
这下就有点不知所措了，最后多查了下资料，有人发现需要把npm的源切换为npm官方源才能正常升级。
于是先进行源的设置
npm config set registry https://registry.npmjs.org/
然后再进行升级，最后升级成功！
C:\Users\LJQ>npm install -g npm
C:\Users\LJQ\application\nodejs\node_cache\npm -> C:\Users\LJQ\application\nodej
s\node_cache\node_modules\npm\bin\npm-cli.js
C:\Users\LJQ\application\nodejs\node_cache\npx -> C:\Users\LJQ\application\nodej
s\node_cache\node_modules\npm\bin\npx-cli.js
+ npm@8.17.0
added 205 packages from 109 contributors in 79.65s
下一步想将npm的源切会国内的源，但不幸的是发生了下方的报错
C:\Users\LJQ>npm config set registry https://registry.npm.taobao.org
ERROR: npm is known not to run on Node.js v10.16.1
You'll need to upgrade to a newer Node.js version in order to use this
version of npm. You can find the latest version at https://nodejs.org/
看来还需要对nodejs的版本进行升级，不过呢升级过程中也并不顺利，提示nodejs 需要windows8.1以上版本支持，但是我的版本是windows8。这个时候就麻烦了，卡在这一步了，后来鼓捣了一会儿还是不行?；灰桓鏊悸?， 升级，但不升级为最新版本，升级为npm依赖的最低版本进行尝试。
更换nodejs为稍低的版本后，npm install成功。紧接着进行 npm run dev运行项目。不幸的是，还是发生了问题：
C:\Users\LJQ\IdeaProjects\fast-admin>npm run dev
> fast-admin@1.0.0 dev C:\Users\LJQ\IdeaProjects\fast-admin
> vite
C:\Users\LJQ\IdeaProjects\fast-admin\node_modules\vite\bin\vite.js:2
import { performance } from 'node:perf_hooks'
^^^^^^
SyntaxError: Cannot use import statement outside a module
?[90m at Module._compile (internal/modules/cjs/loader.js:892:18)?[39m
?[90m at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10
)?[39m
?[90m at Module.load (internal/modules/cjs/loader.js:812:32)?[39m
?[90m at Function.Module._load (internal/modules/cjs/loader.js:724:14)?[39m
?[90m at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10)?[39
m
?[90m at internal/main/run_main_module.js:17:11?[39m
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! fast-admin@1.0.0 dev: `vite`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the fast-admin@1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional log
ging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\LJQ\AppData\Roaming\npm-cache\_logs\2022-08-14T05_12_18_37
0Z-debug.log
其中提示的：SyntaxError: Cannot use import statement outside a module是比较关键的错误信息。再继续百度了解到:
node早先只支持CommonJS的模块化方案，所以ES6的模块化特性用不了。但是在Node V13.2.0之后开始实验性的支持ESM模块化，不过需要创建package.json文件指明type类型为module。
也还是node版本低，无法支持ES6的?？榛匦浴Ｒ虼?，还是必须提升nodejs的版本。然后再继续升级nodejs版本，向上推测的方式。最后测试的版本是v13.2.0，还是报错
C:\Users\LJQ\IdeaProjects\fast-admin>npm --experimental-modules run dev
> fast-admin@1.0.0 dev C:\Users\LJQ\IdeaProjects\fast-admin
> vite
(node:7380) ExperimentalWarning: The ESM module loader is experimental.
file:///C:/Users/LJQ/IdeaProjects/fast-admin/node_modules/vite/bin/vite.js:7
await import('source-map-support').then((r) => r.default.install())
^^^^^
SyntaxError: Unexpected reserved word
?[90m at Loader.moduleStrategy (internal/modules/esm/translators.js:84:18)?[
9m
?[90m at async link (internal/modules/esm/module_job.js:36:21)?[39m
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! fast-admin@1.0.0 dev: `vite`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the fast-admin@1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional lo
ging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\LJQ\AppData\Roaming\npm-cache\_logs\2022-08-14T05_35_09_8
3Z-debug.log
看来要支持比较新的前段项目，只能装最新版本的nodejs 了 。只能暂停了，操作系统升级太麻烦。
