The config of css-loader can be modified through tools.cssLoader. The default config is as follows:
{modules:{auto:true,exportLocalsConvention:'camelCase',localIdentName: config.output.cssModuleLocalIdentName,// isServer indicates node (SSR) build// isWebWorker indicates web worker buildexportOnlyLocals: isServer || isWebWorker,},// CSS Source Map enabled by default in development environmentsourceMap: isDev,// importLoaders is `1` when compiling css files, and is `2` when compiling sass/less filesimportLoaders:1||2,}