feat: support sass

Author: SyMind

lib/webpack.h5.js

@@ -1,3 +1,4 @@
+const sveltePreprocess = require('svelte-preprocess')
 const { getLoaderMeta } = require('./loader-meta')
 
 function modifyH5WebpackChain(chain) {
@@ -13,7 +14,8 @@ function modifyH5WebpackChain(chain) {
             emitCss: true,
             compilerOptions: {
                 hydratable: true
-            }
+            },
+            preprocess: sveltePreprocess({})
         })
 
     chain.plugin('mainPlugin')

lib/webpack.mini.js

@@ -1,3 +1,4 @@
+const sveltePreprocess = require('svelte-preprocess')
 const { getLoaderMeta } = require('./loader-meta')
 
 function modifyMiniWebpackChain(chain) {
@@ -10,7 +11,8 @@ function modifyMiniWebpackChain(chain) {
             emitCss: true,
             compilerOptions: {
                 hydratable: true
-            }
+            },
+            preprocess: sveltePreprocess({})
         })
 
     chain.plugin('miniPlugin')