Laravel 5.4 Mix & Laravel5.5执行 npm run dev时报错，提示cross-env找不到（not found）的解决办法
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首先进入package.json文件，
将scripts下的所有cross-env删除掉，（devDependencies下的不能删除）
处理结果代码如下：{
"private": true,
"scripts": {
"dev": "npm run development",
"development": "NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
"watch": "NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
"watch-poll": "npm run watch -- --watch-poll",
"hot": "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": "NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
},
"devDependencies": {
"axios": "^0.16.2",
"bootstrap-sass": "^3.3.7",
"cross-env": "^5.0.1",
"jquery": "^3.1.1",
"laravel-mix": "^1.0",
"lodash": "^4.17.4",
"vue": "^2.1.10"
}
}
然后执行： npm install –no-bin-links
如果这个过程有报错，需要再次执行：npm install –no-bin-links
其次执行：yarn install –no-bin-links
最后执行编译命令：npm run dev 或者 npm run watch-poll
好了，完美解决此问题！