一般情况是因为Webpack与webpack-dev-server版本不兼容导致。
package.json
{ "name": "vue-loader-demo", "version": "1.0.0", "description": "", "main": "main.js", "scripts": { "dev": "webpack-dev-server --inline --hot --port 8082" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "@babel/core": "^7.4.4", "build": "^0.1.4", "vue": "^1.0.28" }, "devDependencies": { "babel-core": "^6.26.3", "babel-loader": "^6.4.1", "babel-plugin-transform-runtime": "^6.23.0", "babel-preset-es2015": "^6.24.1", "babel-runtime": "^6.26.0", "css-loader": "^0.25.0", "vue-hot-reload-api": "^1.3.2", "vue-html-loader": "^1.2.4", "vue-loader": "^8.5.4", "vue-style-loader": "^1.0.0", "webpack": "^1.13.1", "webpack-dev-server": "^1.15.0" }
可以直接粘贴进去,如果还有错 npm install下
再npm run dev
一般情况是因为Webpack与webpack-dev-server版本不兼容导致。
像我也出现此问题,我电脑的webpack是1.13.1,但webpack-dev-server是2.x以上的版本。
当我将webpack-dev-server卸载掉:npm uninstall webpack-dev-server -g
然后安装1.15.0版本的webpack-dev-server,就可解决了此问题。:npm install webpack-dev-server@1.15.0 -g
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