Webpack terser. Terser can take multiple input files.

Webpack terser. Webpack v5 comes with the latest `terser-webpack-plugin` out of the box. 0 Files in the cache directory have file names whose names are 124 characters, using up almost half of the available characters. We’ll explain why Terser is more performant and demonstrate how to use the Terser webpack plugin, as well as webpack plugins for UglyJS and babel-minify. 1 webpack Version: 4. Rspack is a high performance JavaScript bundler written in Rust. It relies on the static structure of ES2015 module syntax, i. Latest version: 5. drop_console only supports plain console references that would go to the global object. Terser can take multiple input files. 14. 0. Terser Plugin. 3 terser-webpack-plugin Version: 5. Command line arguments that take options (like May 3, 2014 · Terser plugin for webpackterser-webpack-plugin This plugin uses terser to minify/minimize your JavaScript. Command line arguments that take options (like Mar 6, 2025 · Hi, when updating from 5. I don't want any webpack__require__, no mangling, no uglifying, simply just remove whitespace May 21, 2020 · I've got a function defined in an ES module that I'd like to make sure inlines. Upvoting indicates when questions and answers are useful. Even though Webpack 5 includes the terser plugin out of the box, if you wish to customise it, you will still need to install it as a dependency, and then set the extractComments: false in the optimization settings, to stop the license text files being generated. To save yourself time, instead of dynamically trying to get the classname add a property with that same name and use that. webpack is a module bundler. js 中通过将 mode 设置为 development 或者 production，会对代码进行不同的处理。 可以发现， production 模式下编译的文件，文件及变量名被修改、空格换行 Oct 6, 2025 · The default parallel option in terser-webpack-plugin is set to the number of CPUs available (os. export const double = (x) => x + x; Terser can take multiple input files. js js/e808bf2c. I'm using TerserWebpackPlugin to minify my js (which appears to be the default one according to the webpack docs). To begin, you'll need to install terser Terser plugin for webpack. Which is the best alternative to terser-webpack-plugin? Based on common mentions it is: Webpack, Webpack-bundle-analyzer, Node-sass, Cross-env or UglifyJS2 May 3, 2011 · Webpack v5 comes with the latest terser-webpack-plugin out of the box. LICENSE. js:11,16] at js Jul 1, 2021 · Webpack v4 uses old version of terser, webpack v5 uses the latest version, I think it is regression on terser side, by docs terser supports all es features, webpack generate valid code Oct 17, 2020 · Operating System: Windows 10 Node Version: 12. Jun 3, 2024 · Terser 是一个用于 ES6+ 代码的 JavaScript 压缩工具，它基于 UglifyJS，但添加了对现代 JavaScript 特性的支持。 TerserWebpackPlugin 利用 Terser 的强大功能，帮助开发者生成更小、更高效的 JavaScript 文件，从而提升网页加载速度和用户体验。 _terser-webpack-plugin Default path to cache directory: node_modules/. Aug 8, 2020 · Mangling for rollup / webpack bundled code If you add terser-webpack-plugin or rollup-plugin-terser to your bundling step, are you safe to mangle properties? Rule of thumb: If your bundler emits more than 1 file, No. There are 6587 other projects in the npm registry using terser-webpack-plugin. There are 6580 other projects in the npm registry using terser-webpack-plugin. The Webpack team decided to switch to terser in upcoming Webpack 5. This is my code: src/math. The webpack 2 release came with built-in support for ES2015 modules (alias harmony modules) as well as unused module export detection. 14, last published: 3 months ago. 1. It shrinks variable names, removes whitespace and comments, and drops unused code. The name and concept have been popularized by the ES2015 module bundler rollup. log in production like Jul 20, 2024 · Sep 23, 2024 at 8:17 javascript reactjs webpack uglifyjs Jul 20, 2024 at 19:13 javascript uglifyjs terser-webpack-plugin uglifyjs-webpack-plugin Jul 19, 2024 at 14:52 webpack bundling-and-minification webpack-module-federation terser-webpack-plugin Apr 26, 2024 at 22:52 Mar 4, 2021 · 入门 如果你使用的是 webpack v5 或以上版本，你不需要安装这个插件。webpack v5 自带最新的 terser-webpack-plugin。如果使用 webpack v4，则必须安装 terser-webpack-plugin v4 的版本。 首先，你需要安装 terser-webpack-plugin： Nov 24, 2022 · console is here retrieved with a complex expression and reassigned by webpack, before it gets to Terser. There are 6578 other projects in the npm registry using terser-webpack-plugin. txt files in the build output. Useful when you only want to enable a To get round this, I have removed Uglify form webpack. Options Parse options bare_returns (default false) -- support top level return statements html5_comments (default true) shebang (default true) -- support #!command as the first line spidermonkey (default false) -- accept a Spidermonkey (Mozilla) AST Compress options defaults (default: true) -- Pass false to disable most default enabled compress transforms. Did Feb 3, 2021 · Try to isolate the issue to a smaller part of the file -- you should be able to run Terser yourself and figure out what code was running when Terser did crash. config. 27. It can improve the performance of web applications by reducing the size of the JavaScript bundle, which decreases loading times for users. Sep 18, 2019 · I am using the terser webpack plugin. Compared to UglifyJS, the earlier standard for many projects, it’s a future-oriented option. Minifying # Since webpack 4, the production output gets minified using terser ↗ by default. Terser will parse input files in sequence and apply any compression options. 0 i now have these errors and cannot use the latest version Jul 1, 2024 · 另外，Webpack4 默认使用 uglifyjs-webpack-plugin 压缩代码，也可以通过 minimizer 数组替换为 Terser 插件。 terser-webpack-plugin 是一个颇为复杂的 Webpack 插件，提供下述 配置项： test：只有命中该配置的产物路径才会执行压缩，功能与 module. Tree shaking is a term commonly used in the JavaScript context for dead-code elimination. 10 package - Last release 5. Contribute to webpack/terser-webpack-plugin development by creating an account on GitHub. This means the function references the actual VM's CPU count, which is a higher quantity than what is available to the docker executor. It's recommended that you pass the input files first, then pass the options. 23. 2 NPM Version: 6. For example: webpack. optimization: { minimize: true, minimizer: [ new TerserPlugin({ terserOptions: { output: { The terser-webpack-plugin is a plugin for webpack that uses Terser to minify JavaScript files. Getting Started Webpack v5 comes with the latest terser-webpack-plugin out of the box. Mar 16, 2023 · Output of Terser And hence, webpack could easily tree shake the unused imports. I am going to use webpack v5, so per doc, I removed terser: npm uninstall terser-webpack-plugin. Sep 22, 2024 · The Terser Webpack Plugin is essential for minimizing JavaScript code. Step 1 I'm setting source-maps to be on production. js. May 27, 2025 · While TerserWebpackPlugin is a powerful tool for optimizing your Webpack bundles, it can sometimes lead to errors or unexpected behavior. The new I have a version 4. With old version of terser-webpack-plugin we used cache: true and sourceMap: false options. Sep 20, 2023 · closed this as completed on Sep 20, 2023 peratik mentioned this on Sep 20, 2023 Updater terser to 5. Webpack does ton of processing on its side in order to build the concatenated code, it does track of provided and used export -s on its side as well, before even calling terser, so "combined" code with all modules is still valid for terser. 1 of Webpack and use TerserWebpackPlugin to minify my project. Terser-webpack-plugin is a plugin for webpack that uses Terser to minify JavaScript files. webpack v5 开箱即带有最新版本的 terser-webpack-plugin。 如果你使用的是 webpack v5 或更高版本，同时希望自定义配置，那么仍需要安装 terser-webpack-plugin。 May 3, 2014 · Terser Plugin. 0 and setting minimize property to true #342 Jun 25, 2021 · Compressing webpack's export with the terser cli results in an empty file. This is my w May 3, 2010 · Terser plugin for webpack. I set the compress attribute false but the output is one line. But without any success. cache/terser-webpack-plugin. Terser is an ES2015+ compatible JavaScript-minifier. Our step-by-step tutorial includes code examples for reducing file size and improving performance. Mar 23, 2021 · Bug report or Feature request? Bug Version (complete output of terser -V or specific git commit) 5. . May 3, 2014 · Webpack v5 comes with the latest terser-webpack-plugin out of the box. log on production, but it doesn't work. 13 and compiling it using webpack 5. 11, last published: 2 months ago. I ended up creating an issue with Webpack at first and later on with Angular-cli. The Babel team made a comparison table showing terser is much better in speed. Sep 14, 2018 · Hi! After seeing this, I tried comparing terser-webpack-plugin and uglifyjs-webpack-plugin and there was no noticeable speed-up caused by switching for the project I tested it against. 10, last published: 7 months ago. The process of minification includes the changes of the names to the shortest possible form – this already makes code looks mangled (obfuscated). From there on you can remove parts of the file until you have a minimal reproducible example. 3. Jun 19, 2019 · I'm attempting to use webpack to compress my code (remove new lines and whitespaces) and nothing else. js as recommended and I have attempted to use Terser to minify the JS in production. There are 6712 other projects in the npm registry using terser-webpack-plugin. Today some more researchs I found the issue on github (https://github. 0 Expected Behavior No errors should be thrown while building project with terser Actual Behavior Terser plu Sep 30, 2020 · Figured it out. I tried with this configuration. What disadvantage brings Webpack (Laravel Mix) that Terser aids ? Jan 15, 2019 · Operating System: Windows 2012/10 Node Version: 10. What's reputation and how do I get it? Instead, you can save this post to reference later. There are 6599 other projects in the npm registry using terser-webpack-plugin. This plugin uses terser to minify your JavaScript. There are 6843 other projects in the npm registry using terser-webpack-plugin. Aug 3, 2021 · Why are you trying to use terser ? I never heard of it until now. To begin, you'll need to install terser-webpack-plugin: Then add the plugin to your webpack config. Mar 7, 2024 · 本文深入探究了使用 Webpack 时安装 Terser 库的常见问题根源。文章提供了详细的解决方法，包括更新 Webpack 版本、安装 Terser Webpack 插件和更新项目依赖项。此外，文章还介绍了 Terser Webpack 插件，强调了它的强大功能以及如何通过配置优化压缩结果。文章最后总结了 Terser 库安装问题的解决方案，并 Jun 11, 2019 · Just to finish up this question. cpus(). js from Terser plugin Unexpected token: keyword (var) [js/e808bf2c. e. Dec 20, 2022 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Jun 2, 2022 · I solved this issue. 6. Webpack v5 comes with the latest terser-webpack-plugin out of the box. 安装插件： 首先需要安装 terser-webpack-plugin 插件。可以通过 npm 或 yarn 进行安装。 Apr 24, 2021 · 入门 如果你使用的是 webpack v5 或以上版本，你不需要安装这个插件。webpack v5 自带最新的 terser-webpack-plugin。如果使用 webpack v4，则必须安装 terser-webpack-plugin v4 的版本。 首先，你需要安装 terser-webpack-plugin： Nov 13, 2020 · Yes, there is a way to configure Webpack to prevent the creation of the bundle. Mar 25, 2021 · Webpack v5 comes with the latest terser-webpack-plugin out of the box. 1 terser-webpack-plugin Version: 1. 9, last published: 7 months ago. I tried UglifyJsplugin and neither. 0 webpack/terser-webpack-plugin#579 May 3, 2010 · Terser plugin for webpack. TerserWebpackPlugin This plugin uses terser to minify/minimize your JavaScript. If you are using Webpack v5 or above and wish to customize the options, you will still need to install terser-webpack-plugin. The files are parsed in the same global scope, that is, a reference from a file to some variable/function declared in another file will be matched properly. What is motivation or use case for adding/changing the behavior? Jul 3, 2022 · webapck 中提供了压缩 js 代码的方式，可以移除无用代码、替换变量名等，减少编译后文件体积，提升加载速度。 不同mode 在 webpack 配置文件 webpack. js, exports 2 functions. You can use it through the Command line or Node. May 3, 2010 · Documentation terser-webpack-plugin This plugin uses terser to minify/minimize your JavaScript. 4. Terser is an industry-standard minifier for JavaScript code. To begin, you'll need to install Terser plugin for webpack. If you are using Webpack v5 or above and wish to customize the options, you will still need to install `terser-webpack-plugin`. Devtool was causing this issue in production to display all console logs and ignoring the Terser option drop_console. I want to drop console. Using Webpack v4, you have to install terser-webpack-plugin v4. properties set. Feb 24, 2021 · According to this link (Terser documentation) if you are using latest Webpack 5, you don't need to install the Terser plugin as it is included in Webpack 5 out of the box. Here are some common issues and how to address them: Feb 27, 2023 · Learn how to optimize JavaScript with Terser and Webpack. 1 NPM Version: 6. The crash seems to have something to do with the create-react-app bundling dependencies. uglify-es is no longer maintained and uglify-js does not support ES6+. To begin Dec 15, 2020 · Webpack 5 comes with terser-webpack-plugin out of the box, hence you can just import it and configure as you wish. com/webpack-contrib/terser-webpack-plugin/issues/491) and update my project and then works fine. Dec 13, 2018 · Using terser via terser-webpack-plugin I'm trying for days now to output working code with mange. length - 1). it is availble along with webpack too (terser-webpack-plugin) for ES6+. Jun 16, 2021 · In this tutorial, we’ll introduce you to Terser, a JavaScript parser and mangler/compressor toolkit for ES6 and above, and compare it with similar minification tools UglifyJS and babel-minify. This works fine when it's only used in one chunk, but if I call the function from two separate chunks, webpack gener terser-webpack-plugin This plugin uses terser to minify/minimize your JavaScript. 12 to 5. There was the version of terser-webpack-plugin that was installed in my project. Is it possible there were other differences in config/environment? Dec 4, 2020 · webpack / terser-webpack-plugin Public Sponsor Notifications You must be signed in to change notification settings Fork 163 Star 2k Sep 4, 2023 · How to preserve dedicated comment with Webpack's Terser? Asked 1 year, 10 months ago Modified 1 year, 10 months ago Viewed 358 times Apr 13, 2020 · In webpack config, I use terser-webpack-plugin. optimization: { minimize: true, minimizer: [new TerserPlugin()], }, And run webpack via your preferred method. rules. Sep 13, 2021 · The following error occurred in production mode ERROR in js/e808bf2c. There are 6144 other projects in the npm registry using terser-webpack-plugin. import and export. 10, last published: 3 months ago. 10, last published: 6 months ago. Aug 20, 2018 · Feature request What is the expected behavior? For webpack to use the new terser-webpack-plugin instead of uglifyjs-webpack-plugin. It's designed to optimize and compress JavaScript code, reducing file sizes and improving load times for web applications. Webpack issue Angular-cli issue The takeaway is, you can configure terserPlugin, but Angular ignores that configuration when it comes to mangling. The configuration is as follows const TerserPlugin May 20, 2021 · The right choice would be Terser. To begin, you'll need to install Apr 18, 2023 · I'm migrating from Webpack 4 to Webpack 5 and faced this issue with terser-webpack-plugin. Eventhough terser should have everything in one javascript file as compiled by webpack 4, there's a Mar 3, 2023 · webpack webpack-dev-server webpack-5 asked Mar 3, 2023 at 16:44 Artek Wisniewski 797513 1 Apr 11, 2025 · You can reduce build time and override Terser without needing a library to update their dependencies through yarn resolutions . This plugin has a config option for Jan 10, 2019 · I am trying to understand how to get terser webpack plugin to work in the most simple possible case. The docs says that terser is a fork of uglify-es which was widely used before. You want the raw chunk that webpack is giving to Terser, not the source files. Every attempt I have made results in errors because I haven't added the syntax right. However, I am having a hard Terser plugin for webpack. Jun 12, 2019 · Had the exact same issue on production with Webpack5, ended up going with something like following which will exclude specific files under node_modules or dist which cause Terser's "aggressive" minification attempts to break. There are 6315 other projects in the npm registry using terser-webpack-plugin. This causes sporadic problems for us Jul 13, 2023 · I have tried with npm terser, but it doesn't seem to be able to with with a source folder, only single files, nor does it seem to be able to minify the files individually. test 相似； Jan 14, 2019 · Operating System: Node Version: 11 NPM Version: 6 webpack Version: 4 terser-webpack-plugin Version: master Feature Proposal remove console log Feature Use Case remove console. Jun 6, 2022 · I've found a number of solutions for excluding particular modules from minification, but all of the solutions I've seen so far not only skip minification of those packages, they cause those package Nov 13, 2019 · I mostly agree with you, but Terser minification is too delicate without options to make it more strict. 18. These makes me think that I have to choose terser. Start using terser-webpack-plugin in your project by running `npm i terser-webpack-plugin`. 10 with MIT licence at our NPM packages aggregator and search engine. This means any bundling set up that involves code-splitting. Check Terser-webpack-plugin 5. It offers strong compatibility with the webpack ecosystem, and lightning fast build speeds. ℹ️ If you use your own minify function please read the minify section for cache invalidation correctly. 20. 5 webpack Version: 5. There are 6195 other projects in the npm registry using terser-webpack-plugin. 9, last published: 5 months ago. JS API. Running the terser cli directly on the test input file, results in the desired compressed output: Feb 5, 2021 · Describe the bug After upgrading npm to latest version, my create-react-app based app crashes on start. terser-webpack-plugin This plugin uses terser to minify/minimize your JavaScript. This guide provides a clear path to implementing Terser for effective code size reduction, highlighting its capabilities and configuration options. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset. Terser plugin for webpack. 1 Complete CLI command or minify() options used gulp build terser output or error Apr 15, 2022 · I see that something like Terser supports the --mangle-props option, but even that seems to be warned against in the official docs and also would mean creating a regex that covers every single HardwareType? 推荐答案 在 Webpack 中使用 terser-webpack-plugin 可以通过以下步骤进行配置： 1. Oct 5, 2018 · Here comes my dilemma about choosing babel-minify or terser. Webpack v5 comes with the latest terser-webpack-plugin out of the box. [Well obviously webpack needs to be configured properly to do that, check out webpack’s tree shaking guide] There Oct 23, 2020 · Cast " Cannot read property 'javascript' of undefined " error when installing terser-webpack-plugin@v5. 98. Feb 8, 2023 · I get this error message when i run cross-env NODE_ENV=production webpack --config There is a problem with the terser pluggin, but didn't find anything about this webpack is a module bundler. en7zi5 tx dil dh8gq g1cf lz dgiywi 8exfa 0ijlgg aehfpm