How to use the @automattic/calypso-build/webpack/sass.plugins function in @automattic/calypso-build

} ),
				FileConfig.loader(),
			],
		},
		resolve: {
			extensions: [ '.json', '.js', '.jsx' ],
			modules: [ 'node_modules' ],
		},
		node: false,
		plugins: [
			new webpack.DefinePlugin( {
				'process.env.NODE_ENV': JSON.stringify( process.env.NODE_ENV ),
				global: 'window',
			} ),
			new webpack.IgnorePlugin( /^\.\/locale$/, /moment$/ ),
			...SassConfig.plugins( { cssFilename, minify: ! isDevelopment } ),
			new DuplicatePackageCheckerPlugin(),
			new CopyWebpackPlugin( [
				{
					from: presetPath,
					to: 'index.json',
				},
			] ),
		],
		externals: [ wordpressExternals, 'wp', 'lodash' ],
	};

	return webpackConfig;
}