npm install命令不适用于Laravel 5.8版

如何解决npm install命令不适用于Laravel 5.8版

我创建了一个Laravel 5.8项目，并且我想安装npm。所以我输入了npm install，但收到了以下消息：

npm WARN deprecated popper.js@1.16.1: You can find the new Popper v2 at @popperjs/core,this package is dedicated to the legacy v1
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less dependencies.
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and could be using insecure binaries. Upgrade to fsevents 2.
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.2.7 (node_modules\chokidar\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN notsup Unsupported engine for watchpack-chokidar2@2.0.0: wanted: {"node":"<8.10.0"} (current: {"node":"12.18.3","npm":"6.14.6"})
npm WARN notsup Not compatible with your version of node/npm: watchpack-chokidar2@2.0.0
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.1.2 (node_modules\watchpack\node_modules\chokidar\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.3: wanted {"os":"darwin","arch":"x64"})

added 1055 packages from 500 contributors and audited 1058 packages in 149.498s

37 packages are looking for funding
  run `npm fund` for details

found 1 low severity vulnerability
  run `npm audit fix` to fix them,or `npm audit` for details

所以我看到了这个question与我的问题有关，他说运行npm install @popperjs/core --save命令，然后运行npm uninstall popper.js --save以便安装Popper。

但是，只要我输入npm install @popperjs/core --save，我就会收到以下消息：

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.1.3 (node_modules\watchpack\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.3: wanted {"os":"darwin","arch":"x64"})

+ @popperjs/core@2.5.2
added 1 package from 1 contributor and audited 1059 packages in 9.5s

38 packages are looking for funding
  run `npm fund` for details

found 1 low severity vulnerability
  run `npm audit fix` to fix them,or `npm audit` for details

所以现在我真的不知道如何安装npm，所以，如果您知道，请告诉我，我将不胜感激！

预先感谢...

更新＃1：

这是我的package.json：

{
    "private": true,"scripts": {
        "dev": "npm run development","development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js","watch": "npm run development -- --watch","watch-poll": "npm run watch -- --watch-poll","hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js","prod": "npm run production","production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
    },"devDependencies": {
        "axios": "^0.19","bootstrap": "^4.1.0","cross-env": "^5.1","jquery": "^3.2","laravel-mix": "^4.0.7","lodash": "^4.17.13","popper.js": "^1.12","resolve-url-loader": "^2.3.1","sass": "^1.15.2","sass-loader": "^7.1.0","vue": "^2.5.17"
    },"dependencies": {
        "@popperjs/core": "^2.5.2"
    }
}

更新2：

我删除了"popper.js": "^1.12",和package.json文件夹中的node_modules并键入了npm install，但是再次出现相同的错误！

解决方法

从 "popper.js": "^1.12",删除package.json行

然后删除node_modules

然后运行cmd npm install