pass clean options to webpack plugin

packages/neutrino-middleware-clean/index.js

@@ -1,10 +1,17 @@
 const CleanPlugin = require('clean-webpack-plugin');
 const merge = require('deepmerge');
 
-module.exports = (neutrino, options = {}) => {
-  const { paths, root } = merge({ paths: [], root: neutrino.options.root }, options);
+module.exports = (neutrino, opts = {}) => {
+  const options = merge({
+    paths: [],
+    root: neutrino.options.root,
+    verbose: neutrino.options.debug
+  }, opts);
+
+  const { paths } = options;
+  delete options.paths;
 
   neutrino.config
-    .plugin(options.pluginId || 'clean')
-    .use(CleanPlugin, [paths, { root, verbose: neutrino.options.debug }]);
+    .plugin(opts.pluginId || 'clean')
+    .use(CleanPlugin, [paths, options]);
 };

packages/neutrino-preset-web/index.js

@@ -30,7 +30,10 @@ module.exports = (neutrino, opts = {}) => {
     polyfills: {
       async: true
     },
-    babel: {}
+    babel: {},
+    clean: opts.clean !== false && {
+      paths: [neutrino.options.output]
+    }
   }, opts);
 
   Object.assign(options, {
@@ -143,7 +146,7 @@ module.exports = (neutrino, opts = {}) => {
         .use(optimize.ModuleConcatenationPlugin);
     })
     .when(neutrino.options.command === 'build', (config) => {
-      neutrino.use(clean, { paths: [neutrino.options.output] });
+      config.when(options.clean, () => neutrino.use(clean, options.clean));
       neutrino.use(copy, {
         patterns: [{
           context: staticDir,