Webpack长期缓存

Question

方案

我试图使用webpack将我的供应商脚本与我的应用程序脚本分开捆绑。

尝试1

index.js

var _ = require('lodash');
console.log(_)

webpack.config.js

var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');

var config = {
  entry: {
    vendor: ['lodash'],
    app: './index.js'
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].[chunkhash].js'
  },
  plugins: [

    new webpack.optimize.CommonsChunkPlugin({
      name: "vendor",
      minChunks: Infinity,
    }),

    new HtmlWebpackPlugin({
        filename: 'index.html',
        inject: true
    })
  ]
};

module.exports = config;

结果

                         Asset       Size  Chunks             Chunk Names
       app.3437c5da57e0c6671675.js  145 bytes       0  [emitted]  app
    vendor.72c95e21a8d7096d53bc.js     428 kB       1  [emitted]  vendor
                        index.html  232 bytes          [emitted]

现在，如果我对index.js

进行了更改

index.js

var _ = require('lodash');
console.log('changed index');
console.log(_)

结果

                Asset       Size  Chunks             Chunk Names
   app.c724350371b50a9afeb2.js  177 bytes       0  [emitted]  app
vendor.0e76f9c86cbe02606265.js     428 kB       1  [emitted]  vendor
                    index.html  232 bytes          [emitted]

即使我只更新了索引文件，两个哈希都会改变。

两个供应商文件之间的区别是

vendor.72c95e21a8d7096d53bc.js

script.src = __webpack_require__.p + "" + chunkId + "." + ({"0":"app"}[chunkId]||chunkId) + "." + {"0":"3437c5da57e0c6671675"}[chunkId] + ".js";

vendor.0e76f9c86cbe02606265.js

script.src = __webpack_require__.p + "" + chunkId + "." + ({"0":"app"}[chunkId]||chunkId) + "." + {"0":"c724350371b50a9afeb2"}[chunkId] + ".js";

尝试2

在做了一些研究后，我发现下面的文章解释了webpack生成一个chuck清单，其中包含放置在条目块中的块标识符。这解释了上面的差异。解决方案是将chuck清单提取到单独的文件中。

https://medium.com/@okonetchnikov/long-term-caching-of-static-assets-with-webpack-1ecb139adb95

index.js

var _ = require('lodash');
console.log(_)

webpack.config.js

var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ChunkManifestPlugin = require('chunk-manifest-webpack-plugin');

var config = {
  entry: {
    vendor: ['lodash'],
    app: './index.js'
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].[chunkhash].js'
  },
  plugins: [

    new webpack.optimize.CommonsChunkPlugin({
      name: "vendor",
      minChunks: Infinity,
    }),

    new ChunkManifestPlugin({
      filename: "manifest.json",
      manifestVariable: "webpackManifest"
    }),

    new HtmlWebpackPlugin({
        filename: 'index.html',
        inject: true
    })
  ]
};

module.exports = config;

结果

               Asset       Size  Chunks             Chunk Names
app.3437c5da57e0c6671675.js  145 bytes       0  [emitted]  app
             manifest.json   35 bytes          [emitted]
vendor.72c95e21a8d7096d53bc.js     428 kB       1  [emitted]  vendor

现在，如果我对index.js

进行了更改

index.js

var _ = require('lodash');
console.log('changed index');
console.log(_)

结果

               Asset       Size  Chunks             Chunk Names
app.c724350371b50a9afeb2.js  177 bytes       0  [emitted]  app
             manifest.json   35 bytes          [emitted]
vendor.0e76f9c86cbe02606265.js     428 kB       1  [emitted]  vendor

即使我只更新了索引文件，两个哈希值也会更改。

但是，这次两个供应商文件之间没有差异

问题

上述方案无法正常工作或我是否从根本上错误地解决了这个问题。

使用webpack是否有更简单的方法来实现我想要做的事情，因为即使我上面的步骤工作，我也必须阅读清单然后将其注入我的索引.html页面？

Answer 1

尝试使用似乎正常的https://github.com/zhenyong/webpack-stable-module-id-and-hash。

第一个补丁 js/app-379075f0ea0b0e0148f3.js 2.19 kB 0 [emitted] app js/react-da22e98119ee46232ff7.js 747 kB 1 [emitted] react

重建，只更改了应用 js/app-fc7ca0df6dfcf7ca77f7.js 2.21 kB 0 [emitted] app js/react-da22e98119ee46232ff7.js 747 kB 1 [emitted] react