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const WebpackRTLPlugin = require( '@automattic/webpack-rtl-plugin' );
const MiniCssExtractPlugin = require( 'mini-css-extract-plugin' );
const MiniCSSWithRTLPlugin = require( './mini-css-with-rtl' );
/**
* Return a webpack loader object containing our styling (Sass -> CSS) stack.
* @param {Object} _ Options
* @param {string[]} _.includePaths Sass files lookup paths
* @param {string} _.prelude String to prepend to each Sass file
* @param {Object} _.postCssOptions PostCSS options
* @returns {Object} webpack loader object
*/
module.exports.loader = ( { includePaths, prelude, postCssOptions } ) => ( {
test: /\.(sc|sa|c)ss$/,
use: [
MiniCssExtractPlugin.loader,
{
loader: require.resolve( 'css-loader' ),
options: {
importLoaders: 2,
// We do not want css-loader to resolve absolute paths. We
// typically use `/` to indicate the start of the base URL,
// but starting with css-loader v4, it started trying to handle
// absolute paths itself.
url: {
filter: ( path ) => ! path.startsWith( '/' ),
},
},
},
{
loader: require.resolve( 'postcss-loader' ),
options: {
postcssOptions: postCssOptions || {},
},
},
{
loader: require.resolve( 'sass-loader' ),
options: {
additionalData: prelude,
sassOptions: {
includePaths,
quietDeps: true,
},
// The warnRuleAsWarning can be removed once sass-loader is updated to v14. It defaults to true in that version.
// @see https://github.com/webpack-contrib/sass-loader/tree/v14.0.0?tab=readme-ov-file#warnruleaswarning
warnRuleAsWarning: true,
},
},
],
} );
/**
* Return an array of styling relevant webpack plugin objects.
* @param {Object} _ Options
* @param {string} _.chunkFilename filename pattern to use for CSS files
* @param {string} _.filename filename pattern to use for CSS chunk files
* @returns {Object[]} styling relevant webpack plugin objects
*/
module.exports.plugins = ( { chunkFilename, filename } ) => [
new MiniCssExtractPlugin( {
chunkFilename,
filename,
ignoreOrder: true, // suppress conflicting order warnings from mini-css-extract-plugin
attributes: {
'data-webpack': true,
},
} ),
new MiniCSSWithRTLPlugin(),
new WebpackRTLPlugin(),
];
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