NPM run dev cross-env 找不到的问题

linux 或mac 删除掉 cross-env
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": "npm run development -- --watch",
"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 --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
},
"devDependencies": {
"axios": "^0.18",
"bootstrap": "^4.0.0",
"cross-env": "^5.1",
"jquery": "^3.2",
"laravel-mix": "^2.0",
"lodash": "^4.17.5",
"popper.js": "^1.12",
"vue": "^2.5.17"
}
}

然后删除目录 node_modules 从新 npm install 生存目录
sudo npm run install