webpack配置

layman 發(fā)布于2019-08-21 17:59 / 3258人閱讀

摘要：告訴服務(wù)器從哪里提供內(nèi)容。這只有在您想要提供靜態(tài)文件時(shí)才需要。文件更改將觸發(fā)整個(gè)頁(yè)面重新加載。解決辦法將卸載掉然后安裝版本的，就可解決了此問(wèn)題。

webpack.config.js
var webpack = require("webpack");
var HtmlWebpackPlugin = require("html-webpack-plugin");
var path = require("path");
module.exports={

entry: __dirname+"/main.js",
// {
//     index:__dirname+"/index.js",
//    main: __dirname+"/main.js"
// } ,
output:{
    path:__dirname+"/dist",
    filename:"[name].js"
},
module:{
    rules:[
        {
            test:/.vue$/,
            loader:"vue-loader"
        },
        {
            test:/.js$/,
            loader:"babel-loader",
            options:{
                "presets":[
                    "es2015"
                ]
            }
        },
        {
            test:/.css$/,
            use:[
            "style-loader",
            "css-loader"
            ]
        },{
            test:/.html$/,
            use:[
                "html-loader"
            ]
        },{
            test:/.png|.jpg|.gif$/,
            loader:"url-loader"
        }
    ]
},
devServer:{
    //告訴服務(wù)器從哪里提供內(nèi)容。這只有在您想要提供靜態(tài)文件時(shí)才需要。例如圖片？？
                    contentBase:path.join(__dirname + "dist"),
    // --告訴服務(wù)器觀看由devServer.contentBase選項(xiàng)提供的文件。文件更改將觸發(fā)整個(gè)頁(yè)面重新加載。
                    watchContentBase: true,
                    // --隨所有內(nèi)容啟用gzip壓縮
                    compress: true,
                    // 模塊的熱加載，必須結(jié)合 HotModuleReplacementPlugin使用
    hot: true,  
                    port: 9999,
                    host: "localhost",
    inline:true,
                    //相當(dāng)于gulp的middleware中間件攔截請(qǐng)求；
                    setup(app) {
                        app.get("/some/path", function(req, res) {
                            console.log(11)
                            res.json({ custom: "response" });
                        });
                    },
                    // proxy:{
                    //         // "/api": "http://localhost:3000/"
                    //         "/api": "http://localhost:9000"
                    //             //     "/api": {
                    //             //         target: "http://localhost:3000",
                    //             //         pathRewrite: {"^/api" : ""},
                    //             //         secure: false
                    //                 //     }
                    // }
    },

plugins:[

    new webpack.HotModuleReplacementPlugin(),
    // new webpack.optimize.UglifyJsPlugin(),
    new webpack.optimize.CommonsChunkPlugin({
        name: "commons",
        // ( 公共chunk(commnons chunk) 的名稱)
        filename: "commons.js",
        // ( 公共chunk 的文件名)
    }),
    new HtmlWebpackPlugin({
        // filename: "test.html",
        template: "./index.html"
})
    ]

}

package.json
{
"name": "wlr",
"version": "1.0.0",
"description": "http://生成文件npm run startr //啟動(dòng)服務(wù)，自動(dòng)刷新npm run dev",
"main": "index.js",
"scripts": {

"test": "echo "Error: no test specified" && exit 1",
"start":"webpack --config webpack.config.js",
"dev": "webpack-dev-server --config webpack.config.js --open"

},
"author": "",
"license": "ISC",
"devDependencies": {

"babel": "^6.23.0",
"babel-core": "^6.26.0",
"babel-loader": "^7.1.2",
"babel-preset-es2015": "^6.24.1",
"css-loader": "^0.28.7",
"html-loader": "^0.5.1",
"html-webpack-plugin": "^2.30.1",
"style-loader": "^0.19.0",
"url-loader": "^0.6.2",
"vue-loader": "^13.3.0",
"webpack": "^3.8.1",
"webpack-dev-server": "^2.9.3"

}
}
遇見(jiàn)的問(wèn)題
1.npm run dev 啟動(dòng)服務(wù)，報(bào)錯(cuò)

或者

報(bào)錯(cuò)原因：Webpack與webpack-dev-server版本不兼容導(dǎo)致。webpack是1.13.1，但webpack-dev-server是2.x以上的版本。
解決辦法：將webpack-dev-server卸載掉：npm uninstall webpack-dev-server -g
然后安裝1.15.0版本的webpack-dev-server，就可解決了此問(wèn)題。：npm install webpack-dev-server@1.15.0 -g