To attach it to the configuration, define a part for it first: To get started, include the plugin to the project: npm add terser-webpack-plugin -D To tune the defaults, we'll attach terser-webpack-plugin to the project so that it's possible to adjust it.
In webpack, minification process is controlled through two configuration fields: optimization.minimize flag to toggle it and optimization.minimizer array to configure the process. Modifying JavaScript minification process #
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Rewriting the parameters breaks code unless you take precautions against it in this case. For example, Angular 1 expects specific function parameter naming when using modules. Unsafe transformations can break code as they can lose something implicit the underlying code relies upon. Good examples of this include renaming variables or even removing entire blocks of code based on the fact that they are unreachable ( if (false)). Safe transformations do this without losing any meaning by rewriting code. The point of minification is to convert the code into a smaller form.
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Compared to UglifyJS, the earlier standard for many projects, it's a future-oriented option.Īlthough webpack minifies the output by default, it's good to understand how to customize the behavior should you want to adjust it further or replace the minifier. Terser is an ES2015+ compatible JavaScript-minifier. Two basic examples showcase the use of eslint-loader to perform transpilation and minimization tasks.Since webpack 4, the production output gets minified using terser by default. This article describes Weback configuration of the eslint-loader module. Target: 'es2015' // Syntax to compile to (see options below for possible values) If you are using babel-loader remove the lines from the project file rules section: = require('esbuild-loader') Load esbuild in WebpackĮsbuild-loader provides a module that performs JavaScript transpilation instead of your current module. This article shows a few basic examples of integrating esbuild-loader in Webpack, and also replacing Terser minifier with esbuild. There is a plugin that brings esbuild transpilation and minification alternatives in Webpack called esbuild-loader. Esbuild has amazing performance and JavaScript compatible API makes it possible to integrate its utilities with existing JavaScript bundlers. It supports ESNext, JSX, TypeScript syntax, tree shaking, and blazing fast cacheless minification.
Terser was a big step forward for JavaScript bundling solutions, but is it still a great choice today?Įsbuild is a modern JavaScript bundler toolkit written in Go. Terser was a reasonable replacement of UglifyJS since it added support of next-generation JavaScript syntax and performed faster on benchmarks and production. It uses a Terser compressor to process JavaScript files by default. Webpack is one of the most popular JavaScript bundler tools.
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