[英]Laravel TypeError: Cannot read property 'js' of undefined
I know there are other questions about "Cannot read property 'X' of undefined" error in Laravel, but each of them have different fix depended to X .我知道 Laravel 中还有关于“无法读取未定义的属性‘X’”错误的其他问题,但每个问题都有不同的修复取决于 X 。
Error i receive when i run npm run watch
or npm run dev
is:我在运行
npm run watch
或npm run dev
时收到的错误是:
@ dev C:\Users\ME\Documents\CBLOG
> node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/s
etup/webpack.config.js
C:\Users\ME\Documents\CBLOG\webpack.mix.js:15
mix.js('resources/assets/js/app.js', 'public/js')
^
TypeError: Cannot read property 'js' of undefined
at Object.<anonymous> (C:\Users\ME\Documents\CBLOG\webpack.mix.js:15:5)
at Module._compile (internal/modules/cjs/loader.js:688:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)
at Module.load (internal/modules/cjs/loader.js:598:32)
at tryModuleLoad (internal/modules/cjs/loader.js:537:12)
at Function.Module._load (internal/modules/cjs/loader.js:529:3)
at Module.require (internal/modules/cjs/loader.js:636:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object.<anonymous> (C:\Users\ME\Documents\CBLOG\node_modules\laravel-mix\setup\webpack.config.js:12:1)
at Module._compile (internal/modules/cjs/loader.js:688:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)
at Module.load (internal/modules/cjs/loader.js:598:32)
at tryModuleLoad (internal/modules/cjs/loader.js:537:12)
at Function.Module._load (internal/modules/cjs/loader.js:529:3)
at Module.require (internal/modules/cjs/loader.js:636:17)
at require (internal/modules/cjs/helpers.js:20:18)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ dev: `node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_module
s/laravel-mix/setup/webpack.config.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
I tried many Install/uninstall fixes about npm , webpack and even deleting node_modules
folder and reinstalling by npm install
command, but no luck.我尝试了许多关于 npm 、 webpack 的安装/卸载修复,甚至删除
node_modules
文件夹并通过npm install
命令重新npm install
,但没有运气。
Package.json包.json
"private": true,
"scripts": {
"dev": "node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
"watch": "node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
"hot": "node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
"production": "node node_modules/cross-env/dist/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
},
"devDependencies": {
"axios": "^0.19.0",
"bootstrap-sass": "^3.4.1",
"cross-env": "^5.2.0",
"jquery": "^3.4.1",
"laravel-mix": "^4.0.16",
"lodash": "^4.16.2",
"vue": "^2.6.10"
},
"dependencies": {
"laravel-echo": "^1.5.4",
"pusher-js": "^4.4.0",
"webpack": "^2.1.0-beta.22",
"webpack-cli": "^3.3.5"
}
webpack.mix.js webpack.mix.js
const { mix } = require('laravel-mix');
mix.js('resources/assets/js/app.js', 'public/js')
.sass('resources/assets/sass/app.scss', 'public/css');
Simply remove the braces surrounding the mix
on your first line:只需删除第一行中
mix
周围的括号:
const mix = require('laravel-mix');
It does not work with the braces because laravel-mix
does not use a named export.它不适用于大括号,因为
laravel-mix
不使用命名导出。
You can have a look at this answer for more information about imports and exports: When should I use curly braces for ES6 import?您可以查看此答案以获取有关导入和导出的更多信息: 何时应使用花括号进行 ES6 导入?
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