fix(c2pa-web): change the unregister token passed to FinalizationRegistry.register (#28)

* fix(c2pa-web): change the unregister token passed to FinalizationRegistry.register

* add changeset

* fix(ci): fix flakiness (#29)

* ci: install clippy

* ci: run playwright install in c2pa-web dir

---------

Co-authored-by: Eli Mensch <mensch@adobe.com>

Author: antonpodolsky

.changeset/chilly-schools-behave.md

@@ -0,0 +1,5 @@
+---
+'@contentauth/c2pa-web': patch
+---
+
+Fix issue which crashes reader.fromBlob() and reader.fromBlobFragment() in Firefox.

packages/c2pa-web/src/lib/reader.ts

@@ -118,11 +118,10 @@ export function createReaderFactory(worker: WorkerManager): ReaderFactory {
         args: [format, blob],
       });
 
-      const unregisterToken = Symbol(readerId);
       const reader = createReader(worker, readerId, () => {
-        registry.unregister(unregisterToken);
+        registry.unregister(reader);
       });
-      registry.register(reader, readerId, unregisterToken);
+      registry.register(reader, readerId, reader);
 
       return reader;
     },
@@ -141,11 +140,10 @@ export function createReaderFactory(worker: WorkerManager): ReaderFactory {
         args: [format, init, fragment],
       });
 
-      const unregisterToken = Symbol(readerId);
       const reader = createReader(worker, readerId, () => {
-        registry.unregister(unregisterToken);
+        registry.unregister(reader);
       });
-      registry.register(reader, readerId, unregisterToken);
+      registry.register(reader, readerId, reader);
 
       return reader;
     },