Use ExtrinsicV4 by default (#6164)

Author: valentinfernandez1

packages/api/src/base/Init.ts

@@ -374,7 +374,8 @@ export abstract class Init<ApiType extends ApiTypes> extends Decorate<ApiType> {
       throw new Error('Invalid initializion order, runtimeVersion is not available');
     }
 
-    this._extrinsicType = metadata.asLatest.extrinsic.versions.at(-1) || LATEST_EXTRINSIC_VERSION;
+    // ExtrinsicV5 is not fully supported yet, for that reason we default to version 4
+    this._extrinsicType = metadata.asLatest.extrinsic.versions.at(0) || LATEST_EXTRINSIC_VERSION;
     this._rx.extrinsicType = this._extrinsicType;
     this._rx.genesisHash = this._genesisHash;
     this._rx.runtimeVersion = runtimeVersion;

packages/types/src/extrinsic/Extrinsic.ts

@@ -330,9 +330,11 @@ export class GenericExtrinsic<A extends AnyTuple = AnyTuple> extends ExtrinsicBa
 
   constructor (registry: Registry, value?: GenericExtrinsic | ExtrinsicValue | AnyU8a | Call, { preamble, version }: CreateOptions = {}) {
     const versionsLength = registry.metadata.extrinsic.versions.length;
-    const highestSupportedVersion = versionsLength ? registry.metadata.extrinsic.versions[versionsLength - 1] : undefined;
 
-    super(registry, decodeExtrinsic(registry, value, version || highestSupportedVersion, preamble), undefined, preamble);
+    // TODO: Once ExtrinsicV5 is fully supported update this to use the highest supported verion which is the last item of the array
+    const supportedVersion = versionsLength ? registry.metadata.extrinsic.versions[0] : undefined;
+
+    super(registry, decodeExtrinsic(registry, value, version || supportedVersion, preamble), undefined, preamble);
   }
 
   /**

packages/types/src/extrinsic/constants.ts

@@ -14,7 +14,8 @@ export const UNMASK_VERSION = 0b01111111;
 export const DEFAULT_PREAMBLE = 'bare';
 
 // Latest extrinsic version is v5, which has backwards compatibility for v4 signed extrinsics
-export const LATEST_EXTRINSIC_VERSION = 5;
+// However is not fully supported so LATEST_EXTRINSIC_VERSION is configured as 4 in the meantime.
+export const LATEST_EXTRINSIC_VERSION = 4;
 
 export const VERSION_MASK = 0b00111111;