获得“错误：`output.path`需要是绝对路径或`/`”

我新的JS发展，企图利用的WebPack-dev的服务器我把上面的异常热负荷的变化。确切的堆栈：获得“错误：`output.path`需要是绝对路径或`/`”

Error: `output.path` needs to be an absolute path or `/`. 
at Object.Shared.share.setFs (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-middleware/lib/Shared.js:88:11) 
at Shared (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-middleware/lib/Shared.js:214:8) 
at module.exports (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-middleware/middleware.js:22:15) 
at new Server (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-server/lib/Server.js:56:20) 

at startDevServer (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-server/bin/webpack-dev-server.js:379:12) 
at processOptions (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-server/bin/webpack-dev-server.js:317:3) 
at Object.<anonymous> (/Users/mybox/work/day1/ex6/node_modules/webpack-dev-server/bin/webpack-dev-server.js:441:1) 
at Module._compile (module.js:409:26) 
at Object.Module._extensions..js (module.js:416:10) 
at Module.load (module.js:343:32)

这里是的WebPack配置文件我已经尝试：

module.exports = { 
    entry: "./client/app.jsx", 
    output: { 
     path: "dist/js", 
     filename: "bundle.js", 
     publicPath: "http://127.0.0.1:2992/js" 
    }, 
    module: { 
     loaders: [ 
      { 
       test: /.jsx?$/, 
       loader: "babel-loader", 
       include: /client/ 
      } 
     ] 
    } 
};

和：

module.exports = { 
    entry: "./client/app.jsx", 
    output: { 
     path: "/Users/mybox/work/day1/ex6/dist/js", 
     filename: "bundle.js", 
     publicPath: "http://127.0.0.1:2992/js" 
    }, 
    module: { 
     loaders: [ 
      { 
       test: /.jsx?$/, 
       loader: "babel-loader", 
       include: /client/, 
       query: { 
        presets:['react'] 
       } 
      } 
     ] 
    } 
};

下面是我的package.json文件

{ 
"name": "ex6", 
"version": "1.0.0", 
"main": "index.js", 
"scripts": { 
    "server": "node index.js", 
    "hot": "webpack-dev-server --inline --hot --port 2992 --progress --colors", 
    "dev": "webpack-dev-server --inline --dev --port 2992 --progress --colors" 
}, 
"keywords": [], 
"author": "", 
"license": "ISC", 
"dependencies": { 
    "babel-preset-es2015": "^6.22.0", 
    "hapi": "^16.1.0", 
    "inert": "^4.1.0" 
}, 
"devDependencies": { 
"babel": "^6.5.2", 
"babel-cli": "^6.22.2", 
"babel-core": "^6.22.1", 
"babel-loader": "^6.2.10", 
"babel-preset-react": "^6.22.0", 
"builder": "^3.2.1", 
"webpack": "^2.2.1", 
"webpack-dev-server": "^2.3.0" 
}, 
"description": "" 
}

来源

2017-02-10 Blue Eagle

正如错误信息所说，你ne编辑使用绝对路径。

要获取当前目录的绝对路径，您可以使用__dirname来获得当前目录，然后追加dist/js。所以它会是这样的，

output: { 
    path: __dirname + "/dist/js", // or path: path.join(__dirname, "dist/js"), 
    filename: "bundle.js" 
}

双方将工作得很好。你可以阅读有关的WebPack配置here

编辑：要使用path: path.join(__dirname, "dist/js")你需要要求节点的内置path模块。

从文档报价：

Path module: It provides utilities for working with file and directory paths. Using it with the prefix __dirname global will prevent file path issues between operating systems and will allow relative paths to work as expected.

您可以在webpack.config.js顶部需要它作为

var path = require('path'); 
..... 
.... 
.. 
output: { 
    path: path.join(__dirname, "dist/js"), 
    filename: "bundle.js" 
} 
// rest of the configuration

从上面的两种方法

除此之外，您还可以使用path.resolve提到here。

path: path.resolve(__dirname, "dist/js")

希望它能帮助:)

来源

2017-02-10 18:58:37

工作就像一个魅力！谢谢@hardik .. –

由于某些原因，我仍然得到了与路径相同的异常：“./dist/js”，而__dirname +“dist/js”正常工作。 –

'。/ dist/js'是相对路径。可能是这就是你出错的原因。但在我的项目中工作正常。你正在使用哪个版本的webpack？ –

-1

您可以使用像下面的代码获取绝对路径。

output: { 
    path: require('path').resolve("./dist/js"), 
    filename: 'bundle.js', 
    publicPath: 'http://127.0.0.1:2992/js' 
}

来源

2017-02-13 09:29:54

不要在路径要求。这应该在文件的顶部定义，以便可以引用其他路径。这是不好的做法。 –

您需要包括这在顶部或webpack.config.js文件var path = require('path') ，然后在你的路径执行以下操作：path: path.join(__dirname, "dist/js")

来源

2017-02-13 15:40:17

获得“错误：`output.path`需要是绝对路径或`/`”

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