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Visual primitives for the component age. Use the best bits of ES6 and CSS to style your apps without stress đź’…
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{ resolve: `gatsby-plugin-purgecss`, options: { // set this to true for debugging purposes; see what was removed printRejected: false, // ignore the antd styles you want to completely keep ignore: [ 'node_modules/antd/lib/select', 'node_modules/antd/lib/checkbox', ], purgeCSSOptions: { content: [ path.join(process.cwd(), 'src/**/!(*.d).{ts,js,jsx,tsx}'), // antd doesn't mesh well w purgecss, so keep the files we use // by listing them as content files. // reference: https://purgecss.com/ant_design.html path.join( process.cwd(), 'node_modules/antd/lib/{tooltip,modal,radio}/**/*.{css,less}' ), // utility styles from ant, let's keep it path.join( process.cwd(), 'node_modules/antd/lib/style/**/*.{css,less}' ), ], extractors: [ { // on top of listing antd files as content, we need an extractor to work // with css/less to get the selectors extractor: (content) => content.match(/([a-zA-Z-0-9-@&:{}]+)(?= {)/g) || [], extensions: ['css', 'less'], }, ], }, }, }
PurgeCSS analyzes your HTML and internally keeps track of which selectors are being used or not. PurgeCSS actually analyzes other types of files besides HTML for selectors, such as template files and JavaScript. This feature is what makes PurgeCSS different from a similar solution, UnCSS, and related to a 'predecessor' solution called PurifyCSS. More on both of those later on.
PurgeCSS analyzes your HTML and internally keeps track of which selectors are being used or not. PurgeCSS actually analyzes other types of files besides HTML for selectors, such as template files and JavaScript. This feature is what makes PurgeCSS different from a similar solution, UnCSS, and related to a 'predecessor' solution called PurifyCSS. More on both of those later on.
PurgeCSS is a build/bundle time tool to transform your CSS into the bare minimum it should be. It aims to reduce your overall bundle size by sending only the critical CSS you need, instead of all the CSS you have written and imported. You can use it with any flavor of CSS you use: Sass, Less, Tailwind, Bootstrap, Material UI, Bulma, the list goes on.
On the other side of our titular question is styled-components. While I'm talking about styled-components specifically, the topics and concepts here apply to any CSS-in-JS provider (e.g. emotion). There is a smaller CSS-in-JS library called astroturf that aims to give the developer the best of all worlds, so the limitations I'll discuss later on don't apply there. But be careful with smaller projects/ones that claim you can have it all! You are wading through uncharted territory :)
On the other side of our titular question is styled-components. While I'm talking about styled-components specifically, the topics and concepts here apply to any CSS-in-JS provider (e.g. emotion). There is a smaller CSS-in-JS library called astroturf that aims to give the developer the best of all worlds, so the limitations I'll discuss later on don't apply there. But be careful with smaller projects/ones that claim you can have it all! You are wading through uncharted territory :)
Here at Anvil, we use styled-components. PurgeCSS functionality is essentially baked into styled-components, with a few caveats. If PurgeCSS is already included in styled-components, can you still use both? And if you can, is there any benefit to doing so?
While CSS itself is ubiquitous, the way each project uses it is certainly not. Before preprocessors like Sass and Less, there were entire methodologies, like BEM, for writing and maintaining your CSS. Even with methodologies and preprocessors to help our style writing, there is still an abundance of CSS bloat in all projects.
This project is very interesting. It actually solves the problem of excess CSS the best; it does so by loading your HTML into jsdom, and then querySelector-ing all of the selectors found in your CSS against the emulated DOM. If a selector isn't found in the emulated DOM, UnCSS will not include the CSS rule in its output.
The second of those two reasons is very disappointing, as PostCSS is a rich ecosystem of plugins to extend your CSS' functionality and build process. PostCSS is what Babel is for JavaScript, and unfortunately styled-components is missing out on an entire suite of new functionality.
PurgeCSS is a build/bundle time tool to transform your CSS into the bare minimum it should be. It aims to reduce your overall bundle size by sending only the critical CSS you need, instead of all the CSS you have written and imported. You can use it with any flavor of CSS you use: Sass, Less, Tailwind, Bootstrap, Material UI, Bulma, the list goes on.
While CSS itself is ubiquitous, the way each project uses it is certainly not. Before preprocessors like Sass and Less, there were entire methodologies, like BEM, for writing and maintaining your CSS. Even with methodologies and preprocessors to help our style writing, there is still an abundance of CSS bloat in all projects.
PurgeCSS is a build/bundle time tool to transform your CSS into the bare minimum it should be. It aims to reduce your overall bundle size by sending only the critical CSS you need, instead of all the CSS you have written and imported. You can use it with any flavor of CSS you use: Sass, Less, Tailwind, Bootstrap, Material UI, Bulma, the list goes on.
PurgeCSS is a build/bundle time tool to transform your CSS into the bare minimum it should be. It aims to reduce your overall bundle size by sending only the critical CSS you need, instead of all the CSS you have written and imported. You can use it with any flavor of CSS you use: Sass, Less, Tailwind, Bootstrap, Material UI, Bulma, the list goes on.
The second of those two reasons is very disappointing, as PostCSS is a rich ecosystem of plugins to extend your CSS' functionality and build process. PostCSS is what Babel is for JavaScript, and unfortunately styled-components is missing out on an entire suite of new functionality.
The other edge case to consider is if, like us at Anvil, you use Ant Design. PurgeCSS has a hard time with Ant Design to keep the correct styles, and PurgeCSS is aware of this. Here's the solution straight from the docs, but it isn't adapted for the Gatsby plugin.