Last resort to get the first image in manifest as book cover

chrox · chrox · commit 19c6744d4bcd · 2025-06-05T14:39:29.000+08:00
diff --git a/epub.js b/epub.js
@@ -675,6 +675,8 @@ class Resources {
                 && item.mediaType.startsWith('image'))
             ?? this.getItemByHref(this.guide
                 ?.find(ref => ref.type.includes('cover'))?.href)
+            // last resort: first image in manifest
+            ?? this.manifest.find(item => item.mediaType.startsWith('image'))
 
         this.cfis = CFI.fromElements($$itemref)
     }

Original file line number	Diff line number	Diff line change
`@@ -675,6 +675,8 @@ class Resources {`
`675`	`675`	`&& item.mediaType.startsWith('image'))`
`676`	`676`	`?? this.getItemByHref(this.guide`
`677`	`677`	`?.find(ref => ref.type.includes('cover'))?.href)`
	`678`	`+ // last resort: first image in manifest`
	`679`	`+ ?? this.manifest.find(item => item.mediaType.startsWith('image'))`
`678`	`680`
`679`	`681`	`this.cfis = CFI.fromElements($$itemref)`
`680`	`682`	`}`