Question

我有一个问题-如何分析包装尺寸？

如果要在gitlab中推送提交，我想获取捆绑文件如何更改的信息。

我一直在寻找类似于anger.js的东西，但它可能不支持gitlab。

Answer 1

您可以使用此脚本进行分析，而无需弹出 create-react-app

将analyze.js放入项目的根目录（package.json所在的位置）

npm install progress-bar-webpack-plugin
npm install webpack-bundle-analyzer

analyze.js

process.env.NODE_ENV = 'production';

const webpack = require('webpack');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const webpackConfigProd = require('react-scripts/config/webpack.config')('production');

// this one is optional, just for better feedback on build
const chalk = require('chalk');
const ProgressBarPlugin = require('progress-bar-webpack-plugin');
const green = text => {
  return chalk.green.bold(text);
};

// pushing BundleAnalyzerPlugin to plugins array
webpackConfigProd.plugins.push(new BundleAnalyzerPlugin());

// optional - pushing progress-bar plugin for better feedback;
// it can and will work without progress-bar,
// but during build time you will not see any messages for 10-60 seconds (depends on the size of the project)
// and decide that compilation is kind of hang up on you; progress bar shows nice progression of webpack compilation
webpackConfigProd.plugins.push(
  new ProgressBarPlugin({
    format: `${green('analyzing...')} ${green('[:bar]')}${green('[:percent]')}${green('[:elapsed seconds]')} - :msg`,
  }),
);

// actually running compilation and waiting for plugin to start explorer
webpack(webpackConfigProd, (err, stats) => {
  if (err || stats.hasErrors()) {
    console.error(err);
  }
});

现在将node ./analyze.js简单地放在package.json脚本中

  "scripts": {
      .....
    "analyze": "node ./analyze.js"
  },

在运行npm run analyze

之后

Answer 2

您也可以使用 create-react-app 和 webpack-bundle-analyzer 支持的 webpack stats json 文件来完成此操作。

使用 create-react-app 运行构建时，添加 --stats 标志：

yarn build --stats

这将创建一个 build/bundle-stats.json 文件，其中包含 webpack 统计信息，允许您使用 webpack-bundle-analyzer CLI 来分析此统计信息。

yarn run webpack-bundle-analyzer build/bundle-stats.json

参考： https://www.npmjs.com/package/webpack-bundle-analyzer#user-content-usage-as-a-cli-utility

当时用 CRA 最新版本测试：v4

反应分析包大小

2 个答案: