Scenario
我正在尝试使用 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;
results
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]
现在如果我做出改变index.js
index.js
var _ = require('lodash');
console.log('changed index');
console.log(_)
results
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，两个哈希值都会发生变化。
两个供应商文件之间的区别是
供应商.72c95e21a8d7096d53bc.js
script.src = __webpack_require__.p + "" + chunkId + "." + ({"0":"app"}[chunkId]||chunkId) + "." + {"0":"3437c5da57e0c6671675"}[chunkId] + ".js";
供应商.0e76f9c86cbe02606265.js
script.src = __webpack_require__.p + "" + chunkId + "." + ({"0":"app"}[chunkId]||chunkId) + "." + {"0":"c724350371b50a9afeb2"}[chunkId] + ".js";
尝试2
经过一些研究后，我发现下面的文章解释了 webpack 生成一个 chunk 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。解决方案是将卡盘清单提取到单独的文件中。
https://medium.com/@okonetchnikov/long-term-caching-of-static-assets-with-webpack-1ecb139adb95 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;
results
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
现在如果我做出改变index.js
index.js
var _ = require('lodash');
console.log('changed index');
console.log(_)
results
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，两个哈希值再次发生变化。
但这一次，两个供应商文件之间没有差异
问题
上述场景不起作用是否有原因，或者我从根本上错误地处理了这个问题。
有没有一种更简单的方法可以使用 webpack 来实现我想要做的事情，因为即使我完成了上述步骤，我也必须读取清单，然后将其注入到我的 index.html 页面中？
