Add $isStorageFallback on Codec interface (#5421)

* Add $isStorageFallback on Codec interface

* Rename in CHANGELOG

* Update specs with new naming

* Small formatting adjustments

* Abstract values

* Adjust initialU8a expectation

* Mark old interface as deprecated (& type to never)

* Adjust @deprecated comments

* Add deprecated interfaces to all

packages/api-derive/src/chain/subscribeFinalizedBlocks.ts

@@ -17,7 +17,7 @@ export function subscribeFinalizedBlocks (instanceId: string, api: DeriveApi): (
   return memo(instanceId, (): Observable<SignedBlockExtended> =>
     api.derive.chain.subscribeFinalizedHeads().pipe(
       switchMap((header) =>
-        api.derive.chain.getBlock(header.createdAtHash || header.hash)
+        api.derive.chain.getBlock(header.$createdAtHash || header.hash)
       )
     )
   );

packages/api-derive/src/chain/subscribeFinalizedHeads.ts

@@ -41,7 +41,7 @@ export function subscribeFinalizedHeads (instanceId: string, api: DeriveApi): ()
         const endHash = prevHash;
         const startHash = header.parentHash;
 
-        prevHash = header.createdAtHash = header.hash;
+        prevHash = header.$createdAtHash = header.hash;
 
         return endHash === null || startHash.eq(endHash)
           ? of(header)

packages/api-derive/src/chain/subscribeNewBlocks.ts

@@ -17,7 +17,7 @@ export function subscribeNewBlocks (instanceId: string, api: DeriveApi): () => O
   return memo(instanceId, (): Observable<SignedBlockExtended> =>
     api.derive.chain.subscribeNewHeads().pipe(
       switchMap((header) =>
-        api.derive.chain.getBlock(header.createdAtHash || header.hash)
+        api.derive.chain.getBlock(header.$createdAtHash || header.hash)
       )
     )
   );

packages/api-derive/src/chain/subscribeNewHeads.ts

@@ -37,7 +37,7 @@ export function subscribeNewHeads (instanceId: string, api: DeriveApi): () => Ob
         getAuthorDetails(header, queryAt)
       ),
       map(([header, validators, author]): HeaderExtended => {
-        header.createdAtHash = header.hash;
+        header.$createdAtHash = header.hash;
 
         return createHeaderExtended(header.registry, header, validators, author);
       })

packages/api-derive/src/crowdloan/contributions.ts

@@ -33,7 +33,7 @@ function _getUpdates (api: DeriveApi, paraId: string | number | BN): Observable<
         added = added.concat(...changes.added);
         removed = removed.concat(...changes.removed);
 
-        return of({ added, addedDelta: changes.added, blockHash: events.createdAtHash?.toHex() || '-', removed, removedDelta: changes.removed });
+        return of({ added, addedDelta: changes.added, blockHash: events.$createdAtHash?.toHex() || '-', removed, removedDelta: changes.removed });
       }
 
       return EMPTY;
@@ -52,7 +52,7 @@ function _eventTriggerAll (api: DeriveApi, paraId: string | number | BN): Observ
       );
 
       return items.length
-        ? of(events.createdAtHash?.toHex() || '-')
+        ? of(events.$createdAtHash?.toHex() || '-')
         : EMPTY;
     }),
     startWith('-')

packages/api-derive/src/crowdloan/util.ts

@@ -29,5 +29,5 @@ export function extractContributed (paraId: string | number | BN, events: Vec<Fr
       }
 
       return result;
-    }, { added, blockHash: events.createdAtHash?.toHex() || '-', removed });
+    }, { added, blockHash: events.$createdAtHash?.toHex() || '-', removed });
 }

packages/api-derive/src/type/HeaderExtended.ts

@@ -18,7 +18,7 @@ export function createHeaderExtended (registry: Registry, header?: Header, valid
       super(registry, header);
 
       this.#author = author || extractAuthor(this.digest, validators || []);
-      this.createdAtHash = header?.createdAtHash;
+      this.$createdAtHash = header?.$createdAtHash;
     }
 
     /**

packages/api-derive/src/type/SignedBlockExtended.ts

@@ -46,7 +46,7 @@ export function createSignedBlockExtended (registry: Registry, block?: SignedBlo
       this.#author = author || extractAuthor(this.block.header.digest, validators || []);
       this.#events = events || ([] as EventRecord[]);
       this.#extrinsics = mapExtrinsics(this.block.extrinsics, this.#events);
-      this.createdAtHash = block?.createdAtHash;
+      this.$createdAtHash = block?.$createdAtHash;
     }
 
     /**