fix: import fswfs correctly

Author: ThaUnknown

src/createWritable.js

@@ -1,3 +1,4 @@
+import FileSystemWritableFileStream from './FileSystemWritableFileStream.js'
 import { errors } from './util.js'
 
 const { INVALID, SYNTAX, GONE } = errors
@@ -167,7 +168,7 @@ if (
       async abort (reason) {
         await send({ type: 'abort', reason })
         worker.terminate()
-      },
+      }
     })
 
     return ws