Map URLs to folders when no index is available

Author: rubensworks

lib/resource-mapper.js

@@ -61,10 +61,17 @@ class ResourceMapper {
       const files = await this._readdir(folder)
 
       // Find a file with the same name (minus the dollar extension)
-      const match = files.find(f => this._removeDollarExtension(f) === filename ||
+      let match = files.find(f => this._removeDollarExtension(f) === filename ||
         (isIndex && f.startsWith(this._indexName + '.')))
       if (!match) {
-        throw new Error(`File not found: ${fullPath}`)
+        // Error if no match was found,
+        // unless the URL ends with a '/',
+        // in that case we fallback to the folder itself.
+        if (isIndex) {
+          match = '';
+        } else {
+          throw new Error(`File not found: ${fullPath}`)
+        }
       }
       path = `${folder}${match}`
       contentType = this._getContentTypeByExtension(match)

test/unit/resource-mapper-test.js

@@ -218,6 +218,15 @@ describe('ResourceMapper', () => {
         contentType: 'text/html'
       })
 
+    itMapsUrl(mapper, 'a URL ending with a slash to a folder when no index is available',
+      {
+        url: 'http://localhost/space/'
+      },
+      {
+        path: `${rootPath}space/`,
+        contentType: 'application/octet-stream'
+      })
+
     itMapsUrl(mapper, 'a URL ending with a slash to an index file for text/html when index.html not is available',
       {
         url: 'http://localhost/space/',