Avoid BigInt literals as JSC/Android doesn't support it

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### Fixed
 * When mapTo is used on a property of type List, an error like `Property 'test_list' does not exist on 'Task' objects` occurs when trying to access the property. ([#6268](https://github.com/realm/realm-js/issues/6268), since v12.0.0)
+* Fixed bug where apps running under JavaScriptCore on Android will terminate with the error message `No identifiers allowed directly after numeric literal`. ([#6194](https://github.com/realm/realm-js/issues/6194), since v12.2.0)
 
 ### Compatibility
 * React Native >= v0.71.4

packages/realm/src/Realm.ts

@@ -380,15 +380,15 @@
    * @since 0.11.0
    */
   public static schemaVersion(path: string, encryptionKey?: ArrayBuffer | ArrayBufferView): number {
-    const notFound = 18446744073709551615n; // std::numeric_limit<uint64_t>::max() = 0xffffffffffffffff
+    const notFound = "18446744073709551615"; // std::numeric_limit<uint64_t>::max() = 0xffffffffffffffff as string
     const config: Configuration = { path };
     const absolutePath = Realm.determinePath(config);
     const schemaVersion = binding.Realm.getSchemaVersion({
       path: absolutePath,
       encryptionKey: Realm.determineEncryptionKey(encryptionKey),
     });
     // no easy way to compare uint64_t in TypeScript
-    return notFound.toString() === schemaVersion.toString() ? -1 : binding.Int64.intToNum(schemaVersion);
+    return notFound === schemaVersion.toString() ? -1 : binding.Int64.intToNum(schemaVersion);
   }
 
   /**
@@ -906,7 +906,7 @@
    * Deletes the provided Realm object, or each one inside the provided collection.
    * @param subject - The Realm object to delete, or a collection containing multiple Realm objects to delete.
    */
   delete(subject: AnyRealmObject | AnyRealmObject[] | AnyList | AnyResults | any): void {
     assert.inTransaction(this, "Can only delete objects within a transaction.");
     assert.object(subject, "subject");
     if (subject instanceof RealmObject) {
@@ -939,7 +939,7 @@
 
   /**
    * Deletes a Realm model, including all of its objects.
    * If called outside a migration function, {@link schema} and {@link schemaVersion} are updated.
    * @param name - The model name.
    */
   deleteModel(name: string): void {
@@ -1102,7 +1102,7 @@
    * Remove the listener {@link callback} for the specified event {@link eventName}.
    * @param eventName - The event name.
    * @param callback - Function that was previously added as a listener for this event through the {@link addListener} method.
    * @throws an {@link Error} If an invalid event {@link eventName} is supplied, if Realm is closed or if {@link callback} is not a function.
    */
   removeListener(eventName: RealmEventName, callback: RealmListenerCallback): void {
     assert.open(this);
@@ -1146,7 +1146,7 @@
   }
 
   /**
    * Synchronously call the provided {@link callback} inside a write transaction. If an exception happens inside a transaction,
    * you’ll lose the changes in that transaction, but the Realm itself won’t be affected (or corrupted).
    * More precisely, {@link beginTransaction} and {@link commitTransaction} will be called
    * automatically. If any exception is thrown during the transaction {@link cancelTransaction} will