Merge pull request 'Run replace function on intro page as well' (#5) from replace-on-intro into pages

Reviewed-on: https://codeberg.org/macchiato/loader/pulls/5

builder.js

@@ -101,15 +101,19 @@ export class Builder {
         ({name, data}) => ([name, data])
       )
     )
+    const replace = this.buildReplace(filesMap)
     const intro = this.buildModule({
+      name: '_intro.js',
+      data: replace({
         name: '_intro.js',
         data: (
           '_intro.js' in filesMap ? 
           filesMap['_intro.js'] :
           defaultIntro
         ),
+        files: this.files,
+      })
     })
-    const replace = this.buildReplace(filesMap)
     const modules = this.files.filter(({name}) => (
       name.endsWith('.js') && 
       !name.startsWith('_')