webpack4 tree-shaking, I configure mode according to the official documentation, setting mode to production, but not optimizing my code. My app.js only introduces the a () method of util.js, but when packaging, other methods of util are also packaged, asking for advice, 
change modules to false in the js configuration parameter of the configuration file, options: {preset: [['babel-preset-env'], {modules:false}]}
Hello, have you solved this problem? Encountered the same problem
officially configure ides/tree-shaking/" rel=" nofollow noreferrer "> https://www.webpackjs.com/gui.
as followsI have the same problem. Can you explain in more detail upstairs? I can't find a place.
you may have used OptimizeCSSAssetsPlugin, then add TerserPlugin. The code is as follows:
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
...
optimization: {
minimizer: [
new OptimizeCSSAssetsPlugin(),
new TerserPlugin()
]
}then tree shaking will take effect. Of course, it is also effective to empty, tree shaking of all plug-ins in minimizer.
study online tutorials learn to package projects using webpack, a simple code implementation. the entry file index.html of the interface is as follows: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8&qu...
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according to the demo in ...
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