[CI Skip] release/stable 6.8.1

skip-checks: true

.123trigger

@@ -41,4 +41,5 @@
 6.1.2
 
 6.4.2
-6.5.2
+6.5.2
+6.7.2

CHANGELOG.md

@@ -1,5 +1,30 @@
 # CHANGELOG
 
+## 6.8.1 Nov 11, 2021
+
+Upgrade priority: Low. Recommended for chains with non-MultiSignature variants where `paymentInfo` is required.
+
+Changes:
+
+- Adjust `paymentInfo` signatures to cater for non-MultiSignature variants
+- Remove `::generic::` from names & namespaces under metadata v14
+- Add Polkadot 9122 upgrade block
+- Cleanup Polkadot/Kusama/Westend/Rococo known types (>= v14 metadata)
+- Internal `decorateMethod{Promise, Rx}` renamed to `to{Promise, Rx}Method`
+- Add RPC provider-level LRU for historic requests
+- Add optional known runtime version param to internal `rx.queryAt`
+
+
+## 6.7.2 Nov 9, 2021
+
+Upgrade priority: Low. Recommended for chains on metadata v14 with non-default `Address` implementations.
+
+Changes:
+
+- Detect `AccountId` & `Address` types via `SpRuntime*` definitions
+- Adjust api-derive call ordering when using `.queryAt`
+
+
 ## 6.7.1 Nov 7, 2021
 
 Upgrade priority: Low. Internal maintenance updates, focussed on internal optimizations.

package.json

@@ -11,7 +11,7 @@
   },
   "sideEffects": false,
   "type": "commonjs",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "workspaces": [
     "packages/*"
   ],

packages/api-contract/package.json

@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
-    "@polkadot/api": "6.7.1",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/api": "6.8.1",
+    "@polkadot/types": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "rxjs": "^7.4.0"
   }

packages/api-contract/src/base/Base.ts

@@ -23,7 +23,8 @@ export abstract class Base<ApiType extends ApiTypes> {
     this.api = api;
     this._decorateMethod = decorateMethod;
 
-    assert(!!(api && api.isConnected && api.tx && api.tx.contracts && Object.keys(api.tx.contracts).length), 'Your API has not been initialized correctly and it not decorated with the runtime interfaces for contracts as retrieved from the on-chain runtime');
+    assert(!!(api && api.isConnected && api.tx), 'Your API has not been initialized correctly and is not connected to a chain');
+    assert(!!(api.tx.contracts && Object.keys(api.tx.contracts).length), 'You need to connect to a chain with a runtime that supports contracts');
     assert(isFunction(api.tx.contracts.instantiateWithCode), 'You need to connect to a chain with a runtime with a V3 contracts module. The runtime does not expose api.tx.contracts.instantiateWithCode');
   }
 

packages/api-contract/src/base/Code.spec.ts

@@ -6,7 +6,7 @@ import type { AnyJson } from '@polkadot/types/types';
 import fs from 'fs';
 import path from 'path';
 
-import { decorateMethodPromise } from '@polkadot/api';
+import { toPromiseMethod } from '@polkadot/api';
 
 import v0contractFlipper from '../../test/contracts/ink/v0/flipper.contract.json';
 import v0abiFlipper from '../../test/contracts/ink/v0/flipper.json';
@@ -19,19 +19,19 @@ const v0wasmFlipper = fs.readFileSync(path.join(__dirname, '../../test/contracts
 describe('Code', (): void => {
   it('can construct with an individual ABI/WASM combo', (): void => {
     expect(
-      () => new Code(mockApi, v0abiFlipper as AnyJson, v0wasmFlipper, decorateMethodPromise)
+      () => new Code(mockApi, v0abiFlipper as AnyJson, v0wasmFlipper, toPromiseMethod)
     ).not.toThrow();
   });
 
   it('can construct with an .contract ABI (v0)', (): void => {
     expect(
-      () => new Code(mockApi, v0contractFlipper as AnyJson, null, decorateMethodPromise)
+      () => new Code(mockApi, v0contractFlipper as AnyJson, null, toPromiseMethod)
     ).not.toThrow();
   });
 
   it.only('can construct with an .contract ABI (v1)', (): void => {
     expect(
-      () => new Code(mockApi, v1contractFlipper as AnyJson, null, decorateMethodPromise)
+      () => new Code(mockApi, v1contractFlipper as AnyJson, null, toPromiseMethod)
     ).not.toThrow();
   });
 });

packages/api-contract/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api-contract', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/api-contract', version: '6.8.1' };

packages/api-contract/src/promise/Blueprint.ts

@@ -4,13 +4,13 @@
 import type { Hash } from '@polkadot/types/interfaces';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { ApiPromise, decorateMethodPromise } from '@polkadot/api';
+import { ApiPromise, toPromiseMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Blueprint as BaseBlueprint } from '../base';
 
 export class Blueprint extends BaseBlueprint<'promise'> {
   constructor (api: ApiPromise, abi: AnyJson | Abi, codeHash: string | Hash) {
-    super(api, abi, codeHash, decorateMethodPromise);
+    super(api, abi, codeHash, toPromiseMethod);
   }
 }

packages/api-contract/src/promise/Code.ts

@@ -4,13 +4,13 @@
 import type { ApiPromise } from '@polkadot/api';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { decorateMethodPromise } from '@polkadot/api';
+import { toPromiseMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Code as BaseCode } from '../base';
 
 export class Code extends BaseCode<'promise'> {
   constructor (api: ApiPromise, abi: AnyJson | Abi, wasm: Uint8Array | string | Buffer | null | undefined) {
-    super(api, abi, wasm, decorateMethodPromise);
+    super(api, abi, wasm, toPromiseMethod);
   }
 }

packages/api-contract/src/promise/Contract.ts

@@ -4,13 +4,13 @@
 import type { AccountId } from '@polkadot/types/interfaces';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { ApiPromise, decorateMethodPromise } from '@polkadot/api';
+import { ApiPromise, toPromiseMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Contract as BaseContract } from '../base';
 
 export class Contract extends BaseContract<'promise'> {
   constructor (api: ApiPromise, abi: AnyJson | Abi, address: string | AccountId) {
-    super(api, abi, address, decorateMethodPromise);
+    super(api, abi, address, toPromiseMethod);
   }
 }

packages/api-contract/src/rx/Blueprint.ts

@@ -4,13 +4,13 @@
 import type { Hash } from '@polkadot/types/interfaces';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { ApiRx, decorateMethodRx } from '@polkadot/api';
+import { ApiRx, toRxMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Blueprint as BaseBlueprint } from '../base';
 
 export class Blueprint extends BaseBlueprint<'rxjs'> {
   constructor (api: ApiRx, abi: AnyJson | Abi, codeHash: string | Hash) {
-    super(api, abi, codeHash, decorateMethodRx);
+    super(api, abi, codeHash, toRxMethod);
   }
 }

packages/api-contract/src/rx/Code.ts

@@ -4,13 +4,13 @@
 import type { ApiRx } from '@polkadot/api';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { decorateMethodRx } from '@polkadot/api';
+import { toRxMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Code as BaseCode } from '../base';
 
 export class Code extends BaseCode<'rxjs'> {
   constructor (api: ApiRx, abi: AnyJson | Abi, wasm: Uint8Array | string | Buffer | null | undefined) {
-    super(api, abi, wasm, decorateMethodRx);
+    super(api, abi, wasm, toRxMethod);
   }
 }

packages/api-contract/src/rx/Contract.ts

@@ -4,13 +4,13 @@
 import type { AccountId } from '@polkadot/types/interfaces';
 import type { AnyJson } from '@polkadot/types/types';
 
-import { ApiRx, decorateMethodRx } from '@polkadot/api';
+import { ApiRx, toRxMethod } from '@polkadot/api';
 
 import { Abi } from '../Abi';
 import { Contract as BaseContract } from '../base';
 
 export class Contract extends BaseContract<'rxjs'> {
   constructor (api: ApiRx, abi: AnyJson | Abi, address: string | AccountId) {
-    super(api, abi, address, decorateMethodRx);
+    super(api, abi, address, toRxMethod);
   }
 }

packages/api-derive/package.json

@@ -20,19 +20,19 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
-    "@polkadot/api": "6.7.1",
-    "@polkadot/rpc-core": "6.7.1",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/api": "6.8.1",
+    "@polkadot/rpc-core": "6.8.1",
+    "@polkadot/types": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "@polkadot/util-crypto": "^7.8.2",
     "rxjs": "^7.4.0"
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.8.2",
-    "@polkadot/rpc-provider": "6.7.1"
+    "@polkadot/rpc-provider": "6.8.1"
   }
 }

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

@@ -25,17 +25,20 @@ import { memo } from '../util';
  */
 export function getBlock (instanceId: string, api: ApiInterfaceRx): (hash: Uint8Array | string) => Observable<SignedBlockExtended | undefined> {
   return memo(instanceId, (blockHash: Uint8Array | string): Observable<SignedBlockExtended | undefined> =>
-    api.queryAt(blockHash).pipe(
-      switchMap((queryAt) =>
-        combineLatest([
-          api.rpc.chain.getBlock(blockHash),
-          queryAt.system.events(),
-          queryAt.session
-            ? queryAt.session.validators()
-            : of([])
-        ])
-      ),
-      map(([signedBlock, events, validators]) =>
+    combineLatest([
+      api.rpc.chain.getBlock(blockHash),
+      api.queryAt(blockHash).pipe(
+        switchMap((queryAt) =>
+          combineLatest([
+            queryAt.system.events(),
+            queryAt.session
+              ? queryAt.session.validators()
+              : of([])
+          ])
+        )
+      )
+    ]).pipe(
+      map(([signedBlock, [events, validators]]) =>
         createSignedBlockExtended(api.registry, signedBlock, events, validators)
       ),
       catchError((): Observable<undefined> =>

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

@@ -25,17 +25,18 @@ import { memo } from '../util';
  * console.log(`block #${number} was authored by ${author}`);
  * ```
  */
-export function getHeader (instanceId: string, api: ApiInterfaceRx): (hash: Uint8Array | string) => Observable<HeaderExtended | undefined> {
-  return memo(instanceId, (hash: Uint8Array | string): Observable<HeaderExtended | undefined> =>
-    api.queryAt(hash).pipe(
-      switchMap((queryAt) =>
-        combineLatest([
-          api.rpc.chain.getHeader(hash),
+export function getHeader (instanceId: string, api: ApiInterfaceRx): (blockHash: Uint8Array | string) => Observable<HeaderExtended | undefined> {
+  return memo(instanceId, (blockHash: Uint8Array | string): Observable<HeaderExtended | undefined> =>
+    combineLatest([
+      api.rpc.chain.getHeader(blockHash),
+      api.queryAt(blockHash).pipe(
+        switchMap((queryAt) =>
           queryAt.session
             ? queryAt.session.validators()
             : of([] as AccountId[])
-        ])
-      ),
+        )
+      )
+    ]).pipe(
       map(([header, validators]) =>
         createHeaderExtended(header.registry, header, validators)
       ),

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

@@ -21,15 +21,15 @@ export function subscribeNewBlocks (instanceId: string, api: ApiInterfaceRx): ()
         const blockHash = header.createdAtHash || header.hash;
 
         // we get the block first, setting up the registry
-        return api.queryAt(blockHash).pipe(
-          switchMap((queryAt) =>
-            combineLatest([
-              of(header),
-              api.rpc.chain.getBlock(blockHash),
+        return combineLatest([
+          of(header),
+          api.rpc.chain.getBlock(blockHash),
+          api.queryAt(blockHash).pipe(
+            switchMap((queryAt) =>
               queryAt.system.events()
-            ])
+            )
           )
-        );
+        ]);
       }),
       map(([header, block, events]) =>
         createSignedBlockExtended(block.registry, block, events, header.validators)

packages/api-derive/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api-derive', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/api-derive', version: '6.8.1' };

packages/api-derive/src/tx/events.ts

@@ -16,13 +16,14 @@ interface Result {
 
 export function events (instanceId: string, api: ApiInterfaceRx): (at: Hash) => Observable<Result> {
   return memo(instanceId, (blockHash: Hash) =>
-    api.queryAt(blockHash).pipe(
-      switchMap((queryAt) =>
-        combineLatest([
-          api.rpc.chain.getBlock(blockHash),
+    combineLatest([
+      api.rpc.chain.getBlock(blockHash),
+      api.queryAt(blockHash).pipe(
+        switchMap((queryAt) =>
           queryAt.system.events()
-        ])
-      ),
+        )
+      )
+    ]).pipe(
       map(([block, events]): Result => ({ block, events }))
     )
   );

packages/api-derive/src/tx/signingInfo.ts

@@ -32,20 +32,23 @@ function nextNonce (api: ApiInterfaceRx, address: string): Observable<Index> {
 
 function signingHeader (api: ApiInterfaceRx): Observable<Header> {
   return combineLatest([
-    api.rpc.chain.getHeader(),
-    api.rpc.chain.getFinalizedHead()
-  ]).pipe(
-    switchMap(([bestHeader, finHash]) =>
-      // retrieve the headers - in the case of the current block, we use the parent
-      // to minimize (not completely remove) the impact that forks do have on the system
-      // (when at genesis, just return the current header as the last known)
-      bestHeader.parentHash.isEmpty
-        ? of([bestHeader, bestHeader])
-        : combineLatest([
-          api.rpc.chain.getHeader(bestHeader.parentHash),
-          api.rpc.chain.getHeader(finHash)
-        ])
+    api.rpc.chain.getHeader().pipe(
+      switchMap((header) =>
+        // check for chains at genesis (until block 1 is produced, e.g. 6s), since
+        // we do need to allow transactions at chain start (also dev/seal chains)
+        header.parentHash.isEmpty
+          ? of(header)
+          // in the case of the current block, we use the parent to minimize the
+          // impact of forks on the system, but not completely remove it
+          : api.rpc.chain.getHeader(header.parentHash)
+      )
     ),
+    api.rpc.chain.getFinalizedHead().pipe(
+      switchMap((hash) =>
+        api.rpc.chain.getHeader(hash)
+      )
+    )
+  ]).pipe(
     map(([current, finalized]) =>
       // determine the hash to use, current when lag > max, else finalized
       current.number.unwrap().sub(finalized.number.unwrap()).gt(MAX_FINALITY_LAG)

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

@@ -8,14 +8,14 @@ import type { ApprovalFlag } from '@polkadot/types/interfaces/elections';
 export function approvalFlagsToBools (flags: Vec<ApprovalFlag> | ApprovalFlag[]): boolean[] {
   const bools: boolean[] = [];
 
-  flags.forEach((flag: ApprovalFlag): void => {
-    const str = flag.toString(2);
+  for (let i = 0; i < flags.length; i++) {
+    const str = flags[i].toString(2);
 
     // read from lowest bit to highest
     for (const bit of str.split('').reverse()) {
       bools.push(!!parseInt(bit, 10));
     }
-  });
+  }
 
   // slice off trailing "false" values, as in substrate
   const lastApproval = bools.lastIndexOf(true);

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

@@ -10,10 +10,8 @@ export const deriveMapCache: DeriveCache = {
     mapCache.delete(key);
   },
   forEach: (cb: (key: string, value: any) => void): void => {
-    const entries = mapCache.entries();
-
-    for (const entry in entries) {
-      cb(entry[0], entry[1]);
+    for (const [k, v] of mapCache.entries()) {
+      cb(k, v);
     }
   },
   get: <T = any> (key: string): T | undefined => {

packages/api/package.json

@@ -20,16 +20,16 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
-    "@polkadot/api-derive": "6.7.1",
+    "@polkadot/api-derive": "6.8.1",
     "@polkadot/keyring": "^7.8.2",
-    "@polkadot/rpc-core": "6.7.1",
-    "@polkadot/rpc-provider": "6.7.1",
-    "@polkadot/types": "6.7.1",
-    "@polkadot/types-known": "6.7.1",
+    "@polkadot/rpc-core": "6.8.1",
+    "@polkadot/rpc-provider": "6.8.1",
+    "@polkadot/types": "6.8.1",
+    "@polkadot/types-known": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "@polkadot/util-crypto": "^7.8.2",
     "eventemitter3": "^4.0.7",

packages/api/src/augment/query.ts

@@ -4,7 +4,7 @@
 import type { ApiTypes } from '@polkadot/api/types';
 import type { BTreeMap, Bytes, Data, Null, Option, U8aFixed, Vec, WrapperOpaque, bool, u128, u32, u64, u8 } from '@polkadot/types';
 import type { AccountId32, Call, H256, Perbill, Percent } from '@polkadot/types/interfaces/runtime';
-import type { FrameSupportWeightsPerDispatchClassU64, FrameSystemAccountInfo, FrameSystemEventRecord, FrameSystemLastRuntimeUpgradeInfo, FrameSystemPhase, NodeRuntimeSessionKeys, PalletAssetsApproval, PalletAssetsAssetBalance, PalletAssetsAssetDetails, PalletAssetsAssetMetadata, PalletAuthorshipUncleEntryItem, PalletBagsListListBag, PalletBagsListListNode, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesReleases, PalletBalancesReserveData, PalletBountiesBounty, PalletCollectiveVotes, PalletContractsStorageDeletedContract, PalletContractsStorageRawContractInfo, PalletContractsWasmPrefabWasmModule, PalletDemocracyPreimageStatus, PalletDemocracyReferendumInfo, PalletDemocracyReleases, PalletDemocracyVoteThreshold, PalletDemocracyVoteVoting, PalletElectionProviderMultiPhasePhase, PalletElectionProviderMultiPhaseReadySolution, PalletElectionProviderMultiPhaseRoundSnapshot, PalletElectionProviderMultiPhaseSignedSignedSubmission, PalletElectionProviderMultiPhaseSolutionOrSnapshotSize, PalletElectionsPhragmenSeatHolder, PalletElectionsPhragmenVoter, PalletGiltActiveGilt, PalletGiltActiveGiltsTotal, PalletGiltGiltBid, PalletGrandpaStoredPendingChange, PalletGrandpaStoredState, PalletIdentityRegistrarInfo, PalletIdentityRegistration, PalletImOnlineBoundedOpaqueNetworkState, PalletImOnlineSr25519AppSr25519Public, PalletLotteryLotteryConfig, PalletMultisigMultisig, PalletProxyAnnouncement, PalletProxyProxyDefinition, PalletRecoveryActiveRecovery, PalletRecoveryRecoveryConfig, PalletSchedulerReleases, PalletSchedulerScheduledV2, PalletSocietyBid, PalletSocietyBidKind, PalletSocietyVote, PalletSocietyVouchingStatus, PalletStakingActiveEraInfo, PalletStakingEraRewardPoints, PalletStakingExposure, PalletStakingForcing, PalletStakingNominations, PalletStakingReleases, PalletStakingRewardDestination, PalletStakingSlashingSlashingSpans, PalletStakingSlashingSpanRecord, PalletStakingStakingLedger, PalletStakingUnappliedSlash, PalletStakingValidatorPrefs, PalletTipsOpenTip, PalletTransactionPaymentReleases, PalletTransactionStorageTransactionInfo, PalletTreasuryProposal, PalletUniquesClassDetails, PalletUniquesClassMetadata, PalletUniquesInstanceDetails, PalletUniquesInstanceMetadata, PalletVestingReleases, PalletVestingVestingInfo, SpAuthorityDiscoveryAppPublic, SpConsensusBabeAppPublic, SpConsensusBabeBabeEpochConfiguration, SpConsensusBabeDigestsNextConfigDescriptor, SpCoreCryptoKeyTypeId, SpRuntimeGenericDigest, SpStakingOffenceOffenceDetails } from '@polkadot/types/lookup';
+import type { FrameSupportWeightsPerDispatchClassU64, FrameSystemAccountInfo, FrameSystemEventRecord, FrameSystemLastRuntimeUpgradeInfo, FrameSystemPhase, NodeRuntimeSessionKeys, PalletAssetsApproval, PalletAssetsAssetBalance, PalletAssetsAssetDetails, PalletAssetsAssetMetadata, PalletAuthorshipUncleEntryItem, PalletBagsListListBag, PalletBagsListListNode, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesReleases, PalletBalancesReserveData, PalletBountiesBounty, PalletCollectiveVotes, PalletContractsStorageDeletedContract, PalletContractsStorageRawContractInfo, PalletContractsWasmPrefabWasmModule, PalletDemocracyPreimageStatus, PalletDemocracyReferendumInfo, PalletDemocracyReleases, PalletDemocracyVoteThreshold, PalletDemocracyVoteVoting, PalletElectionProviderMultiPhasePhase, PalletElectionProviderMultiPhaseReadySolution, PalletElectionProviderMultiPhaseRoundSnapshot, PalletElectionProviderMultiPhaseSignedSignedSubmission, PalletElectionProviderMultiPhaseSolutionOrSnapshotSize, PalletElectionsPhragmenSeatHolder, PalletElectionsPhragmenVoter, PalletGiltActiveGilt, PalletGiltActiveGiltsTotal, PalletGiltGiltBid, PalletGrandpaStoredPendingChange, PalletGrandpaStoredState, PalletIdentityRegistrarInfo, PalletIdentityRegistration, PalletImOnlineBoundedOpaqueNetworkState, PalletImOnlineSr25519AppSr25519Public, PalletLotteryLotteryConfig, PalletMultisigMultisig, PalletProxyAnnouncement, PalletProxyProxyDefinition, PalletRecoveryActiveRecovery, PalletRecoveryRecoveryConfig, PalletSchedulerReleases, PalletSchedulerScheduledV2, PalletSocietyBid, PalletSocietyBidKind, PalletSocietyVote, PalletSocietyVouchingStatus, PalletStakingActiveEraInfo, PalletStakingEraRewardPoints, PalletStakingExposure, PalletStakingForcing, PalletStakingNominations, PalletStakingReleases, PalletStakingRewardDestination, PalletStakingSlashingSlashingSpans, PalletStakingSlashingSpanRecord, PalletStakingStakingLedger, PalletStakingUnappliedSlash, PalletStakingValidatorPrefs, PalletTipsOpenTip, PalletTransactionPaymentReleases, PalletTransactionStorageTransactionInfo, PalletTreasuryProposal, PalletUniquesClassDetails, PalletUniquesClassMetadata, PalletUniquesInstanceDetails, PalletUniquesInstanceMetadata, PalletVestingReleases, PalletVestingVestingInfo, SpAuthorityDiscoveryAppPublic, SpConsensusBabeAppPublic, SpConsensusBabeBabeEpochConfiguration, SpConsensusBabeDigestsNextConfigDescriptor, SpCoreCryptoKeyTypeId, SpRuntimeDigest, SpStakingOffenceOffenceDetails } from '@polkadot/types/lookup';
 import type { AnyNumber, ITuple, Observable } from '@polkadot/types/types';
 
 declare module '@polkadot/api/types/storage' {
@@ -1163,7 +1163,7 @@ declare module '@polkadot/api/types/storage' {
       /**
        * Digest of the current block, also part of the block header.
        **/
-      digest: AugmentedQuery<ApiType, () => Observable<SpRuntimeGenericDigest>, []> & QueryableStorageEntry<ApiType, []>;
+      digest: AugmentedQuery<ApiType, () => Observable<SpRuntimeDigest>, []> & QueryableStorageEntry<ApiType, []>;
       /**
        * The number of events in the `Events<T>` list.
        **/

packages/api/src/augment/tx.ts

@@ -5,7 +5,7 @@ import type { ApiTypes, SubmittableExtrinsic } from '@polkadot/api/types';
 import type { Bytes, Compact, Data, Option, U8aFixed, Vec, bool, u128, u16, u32, u64, u8 } from '@polkadot/types';
 import type { Extrinsic } from '@polkadot/types/interfaces/extrinsics';
 import type { AccountId32, Call, H256, MultiAddress, Perbill, Percent, Perquintill } from '@polkadot/types/interfaces/runtime';
-import type { NodeRuntimeOriginCaller, NodeRuntimeProxyType, NodeRuntimeSessionKeys, PalletAssetsDestroyWitness, PalletDemocracyConviction, PalletDemocracyVoteAccountVote, PalletElectionProviderMultiPhaseRawSolution, PalletElectionProviderMultiPhaseSolutionOrSnapshotSize, PalletElectionsPhragmenRenouncing, PalletIdentityBitFlags, PalletIdentityIdentityInfo, PalletIdentityJudgement, PalletImOnlineHeartbeat, PalletImOnlineSr25519AppSr25519Signature, PalletMultisigTimepoint, PalletSocietyJudgement, PalletStakingRewardDestination, PalletStakingValidatorPrefs, PalletUniquesDestroyWitness, PalletVestingVestingInfo, SpConsensusBabeDigestsNextConfigDescriptor, SpConsensusSlotsEquivocationProof, SpCoreChangesTrieChangesTrieConfiguration, SpFinalityGrandpaEquivocationProof, SpNposElectionsSupport, SpRuntimeGenericHeader, SpSessionMembershipProof, SpTransactionStorageProofTransactionStorageProof } from '@polkadot/types/lookup';
+import type { NodeRuntimeOriginCaller, NodeRuntimeProxyType, NodeRuntimeSessionKeys, PalletAssetsDestroyWitness, PalletDemocracyConviction, PalletDemocracyVoteAccountVote, PalletElectionProviderMultiPhaseRawSolution, PalletElectionProviderMultiPhaseSolutionOrSnapshotSize, PalletElectionsPhragmenRenouncing, PalletIdentityBitFlags, PalletIdentityIdentityInfo, PalletIdentityJudgement, PalletImOnlineHeartbeat, PalletImOnlineSr25519AppSr25519Signature, PalletMultisigTimepoint, PalletSocietyJudgement, PalletStakingRewardDestination, PalletStakingValidatorPrefs, PalletUniquesDestroyWitness, PalletVestingVestingInfo, SpConsensusBabeDigestsNextConfigDescriptor, SpConsensusSlotsEquivocationProof, SpCoreChangesTrieChangesTrieConfiguration, SpFinalityGrandpaEquivocationProof, SpNposElectionsSupport, SpRuntimeHeader, SpSessionMembershipProof, SpTransactionStorageProofTransactionStorageProof } from '@polkadot/types/lookup';
 import type { AnyNumber, ITuple } from '@polkadot/types/types';
 
 declare module '@polkadot/api/types/submittable' {
@@ -425,7 +425,7 @@ declare module '@polkadot/api/types/submittable' {
       /**
        * Provide a set of uncles.
        **/
-      setUncles: AugmentedSubmittable<(newUncles: Vec<SpRuntimeGenericHeader> | (SpRuntimeGenericHeader | { parentHash?: any; number?: any; stateRoot?: any; extrinsicsRoot?: any; digest?: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [Vec<SpRuntimeGenericHeader>]>;
+      setUncles: AugmentedSubmittable<(newUncles: Vec<SpRuntimeHeader> | (SpRuntimeHeader | { parentHash?: any; number?: any; stateRoot?: any; extrinsicsRoot?: any; digest?: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [Vec<SpRuntimeHeader>]>;
       /**
        * Generic tx
        **/

packages/api/src/base/Decorate.ts

@@ -146,8 +146,8 @@ export abstract class Decorate<ApiType extends ApiTypes> extends Events {
 
     this.#instanceId = `${++instanceCounter}`;
     this.#registry = options.source?.registry || options.registry || new TypeRegistry();
-    this._rx.queryAt = (blockHash: Uint8Array | string) =>
-      from(this.at(blockHash)).pipe(map((a) => a.rx.query));
+    this._rx.queryAt = (blockHash: Uint8Array | string, knownVersion?: RuntimeVersion) =>
+      from(this.at(blockHash, knownVersion)).pipe(map((a) => a.rx.query));
     this._rx.registry = this.#registry;
 
     const thisProvider = options.source

packages/api/src/bundle.ts

@@ -5,6 +5,6 @@ export { Keyring } from '@polkadot/keyring';
 export { WsProvider, HttpProvider } from '@polkadot/rpc-provider';
 
 export { packageInfo } from './packageInfo';
-export { ApiPromise, decorateMethod as decorateMethodPromise } from './promise';
+export * from './promise';
 export { SubmittableResult } from './submittable';
-export { ApiRx, decorateMethod as decorateMethodRx } from './rx';
+export * from './rx';

packages/api/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/api', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/api', version: '6.8.1' };

packages/api/src/promise/Api.ts

@@ -0,0 +1,215 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ApiOptions, UnsubscribePromise } from '../types';
+
+import { objectSpread } from '@polkadot/util';
+
+import { ApiBase } from '../base';
+import { Combinator, CombinatorCallback, CombinatorFunction } from './Combinator';
+import { promiseTracker, toPromiseMethod } from './decorateMethod';
+
+/**
+ * # @polkadot/api/promise
+ *
+ * ## Overview
+ *
+ * @name ApiPromise
+ * @description
+ * ApiPromise is a standard JavaScript wrapper around the RPC and interfaces on the Polkadot network. As a full Promise-based, all interface calls return Promises, including the static `.create(...)`. Subscription calls utilise `(value) => {}` callbacks to pass through the latest values.
+ *
+ * The API is well suited to real-time applications where either the single-shot state is needed or use is to be made of the subscription-based features of Polkadot (and Substrate) clients.
+ *
+ * @see [[ApiRx]]
+ *
+ * ## Usage
+ *
+ * Making rpc calls -
+ * <BR>
+ *
+ * ```javascript
+ * import ApiPromise from '@polkadot/api/promise';
+ *
+ * // initialise via static create
+ * const api = await ApiPromise.create();
+ *
+ * // make a subscription to the network head
+ * api.rpc.chain.subscribeNewHeads((header) => {
+ *   console.log(`Chain is at #${header.number}`);
+ * });
+ * ```
+ * <BR>
+ *
+ * Subscribing to chain state -
+ * <BR>
+ *
+ * ```javascript
+ * import { ApiPromise, WsProvider } from '@polkadot/api';
+ *
+ * // initialise a provider with a specific endpoint
+ * const provider = new WsProvider('wss://example.com:9944')
+ *
+ * // initialise via isReady & new with specific provider
+ * const api = await new ApiPromise({ provider }).isReady;
+ *
+ * // retrieve the block target time
+ * const blockPeriod = await api.query.timestamp.blockPeriod().toNumber();
+ * let last = 0;
+ *
+ * // subscribe to the current block timestamp, updates automatically (callback provided)
+ * api.query.timestamp.now((timestamp) => {
+ *   const elapsed = last
+ *     ? `, ${timestamp.toNumber() - last}s since last`
+ *     : '';
+ *
+ *   last = timestamp.toNumber();
+ *   console.log(`timestamp ${timestamp}${elapsed} (${blockPeriod}s target)`);
+ * });
+ * ```
+ * <BR>
+ *
+ * Submitting a transaction -
+ * <BR>
+ *
+ * ```javascript
+ * import ApiPromise from '@polkadot/api/promise';
+ *
+ * ApiPromise.create().then((api) => {
+ *   const [nonce] = await api.query.system.account(keyring.alice.address);
+ *
+ *   api.tx.balances
+ *     // create transfer
+ *     transfer(keyring.bob.address, 12345)
+ *     // sign the transcation
+ *     .sign(keyring.alice, { nonce })
+ *     // send the transaction (optional status callback)
+ *     .send((status) => {
+ *       console.log(`current status ${status.type}`);
+ *     })
+ *     // retrieve the submitted extrinsic hash
+ *     .then((hash) => {
+ *       console.log(`submitted with hash ${hash}`);
+ *     });
+ * });
+ * ```
+ */
+export class ApiPromise extends ApiBase<'promise'> {
+  #isReadyPromise: Promise<ApiPromise>;
+  #isReadyOrErrorPromise: Promise<ApiPromise>;
+
+  /**
+   * @description Creates an instance of the ApiPromise class
+   * @param options Options to create an instance. This can be either [[ApiOptions]] or
+   * an [[WsProvider]].
+   * @example
+   * <BR>
+   *
+   * ```javascript
+   * import Api from '@polkadot/api/promise';
+   *
+   * new Api().isReady.then((api) => {
+   *   api.rpc.subscribeNewHeads((header) => {
+   *     console.log(`new block #${header.number.toNumber()}`);
+   *   });
+   * });
+   * ```
+   */
+  constructor (options?: ApiOptions) {
+    super(options, 'promise', toPromiseMethod);
+
+    this.#isReadyPromise = new Promise((resolve): void => {
+      super.once('ready', () => resolve(this));
+    });
+
+    this.#isReadyOrErrorPromise = new Promise((resolve, reject): void => {
+      const tracker = promiseTracker(resolve, reject);
+
+      super.once('ready', () => tracker.resolve(this));
+      super.once('error', (error: Error) => tracker.reject(error));
+    });
+  }
+
+  /**
+   * @description Creates an ApiPromise instance using the supplied provider. Returns an Promise containing the actual Api instance.
+   * @param options options that is passed to the class contructor. Can be either [[ApiOptions]] or a
+   * provider (see the constructor arguments)
+   * @example
+   * <BR>
+   *
+   * ```javascript
+   * import Api from '@polkadot/api/promise';
+   *
+   * Api.create().then(async (api) => {
+   *   const timestamp = await api.query.timestamp.now();
+   *
+   *   console.log(`lastest block timestamp ${timestamp}`);
+   * });
+   * ```
+   */
+  public static create (options?: ApiOptions): Promise<ApiPromise> {
+    const instance = new ApiPromise(options);
+
+    if (options && options.throwOnConnect) {
+      return instance.isReadyOrError;
+    }
+
+    // Swallow any rejections on isReadyOrError
+    // (in Node 15.x this creates issues, when not being looked at)
+    instance.isReadyOrError.catch(() => {
+      // ignore
+    });
+
+    return instance.isReady;
+  }
+
+  /**
+   * @description Promise that resolves the first time we are connected and loaded
+   */
+  public get isReady (): Promise<ApiPromise> {
+    return this.#isReadyPromise;
+  }
+
+  /**
+   * @description Promise that resolves if we can connect, or reject if there is an error
+   */
+  public get isReadyOrError (): Promise<ApiPromise> {
+    return this.#isReadyOrErrorPromise;
+  }
+
+  /**
+   * @description Returns a clone of this ApiPromise instance (new underlying provider connection)
+   */
+  public clone (): ApiPromise {
+    return new ApiPromise(
+      objectSpread({}, this._options, { source: this })
+    );
+  }
+
+  /**
+   * @description Creates a combinator that can be used to combine the latest results from multiple subscriptions
+   * @param fns An array of function to combine, each in the form of `(cb: (value: void)) => void`
+   * @param callback A callback that will return an Array of all the values this combinator has been applied to
+   * @example
+   * <BR>
+   *
+   * ```javascript
+   * const address = '5DTestUPts3kjeXSTMyerHihn1uwMfLj8vU8sqF7qYrFacT7';
+   *
+   * // combines values from balance & nonce as it updates
+   * api.combineLatest([
+   *   api.rpc.chain.subscribeNewHeads,
+   *   (cb) => api.query.system.account(address, cb)
+   * ], ([head, [balance, nonce]]) => {
+   *   console.log(`#${head.number}: You have ${balance.free} units, with ${nonce} transactions sent`);
+   * });
+   * ```
+   */
+  // eslint-disable-next-line @typescript-eslint/require-await
+  public async combineLatest <T extends any[] = any[]> (fns: (CombinatorFunction | [CombinatorFunction, ...any[]])[], callback: CombinatorCallback<T>): UnsubscribePromise {
+    const combinator = new Combinator(fns, callback);
+
+    return (): void => {
+      combinator.unsubscribe();
+    };
+  }
+}

packages/api/src/promise/decorateMethod.ts

@@ -0,0 +1,108 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Observable } from 'rxjs';
+import type { Callback, Codec } from '@polkadot/types/types';
+import type { DecorateFn, DecorateMethodOptions, ObsInnerType, StorageEntryPromiseOverloads, UnsubscribePromise, VoidFn } from '../types';
+
+import { catchError, EMPTY, Subscription, tap } from 'rxjs';
+
+import { assert, isFunction } from '@polkadot/util';
+
+interface Tracker<T> {
+  reject: (value: Error) => Observable<never>;
+  resolve: (value: T) => void;
+}
+
+// a Promise completion tracker, wrapping an isComplete variable that ensures the promise only resolves once
+export function promiseTracker<T> (resolve: (value: T) => void, reject: (value: Error) => void): Tracker<T> {
+  let isCompleted = false;
+
+  return {
+    reject: (error: Error): Observable<never> => {
+      if (!isCompleted) {
+        isCompleted = true;
+
+        reject(error);
+      }
+
+      return EMPTY;
+    },
+    resolve: (value: T): void => {
+      if (!isCompleted) {
+        isCompleted = true;
+
+        resolve(value);
+      }
+    }
+  };
+}
+
+// extract the arguments and callback params from a value array possibly containing a callback
+function extractArgs (args: unknown[], needsCallback: boolean): [unknown[], Callback<Codec> | undefined] {
+  let callback: Callback<Codec> | undefined;
+  const actualArgs = args.slice();
+
+  // If the last arg is a function, we pop it, put it into callback.
+  // actualArgs will then hold the actual arguments to be passed to `method`
+  if (args.length && isFunction(args[args.length - 1])) {
+    callback = actualArgs.pop() as Callback<Codec>;
+  }
+
+  // When we need a subscription, ensure that a valid callback is actually passed
+  assert(!needsCallback || isFunction(callback), 'Expected a callback to be passed with subscriptions');
+
+  return [actualArgs, callback];
+}
+
+// Decorate a call for a single-shot result - retrieve and then immediate unsubscribe
+function decorateCall<M extends DecorateFn<ObsInnerType<ReturnType<M>>>> (method: M, args: unknown[]): Promise<ObsInnerType<ReturnType<M>>> {
+  return new Promise((resolve, reject): void => {
+    // single result tracker - either reject with Error or resolve with Codec result
+    const tracker = promiseTracker(resolve, reject);
+
+    // encoding errors reject immediately, any result unsubscribes and resolves
+    const subscription: Subscription = method(...args)
+      .pipe(
+        catchError((error: Error) => tracker.reject(error))
+      )
+      .subscribe((result): void => {
+        tracker.resolve(result);
+        setTimeout(() => subscription.unsubscribe(), 0);
+      });
+  });
+}
+
+// Decorate a subscription where we have a result callback specified
+function decorateSubscribe<M extends DecorateFn<ObsInnerType<ReturnType<M>>>> (method: M, args: unknown[], resultCb: Callback<Codec>): UnsubscribePromise {
+  return new Promise<VoidFn>((resolve, reject): void => {
+    // either reject with error or resolve with unsubscribe callback
+    const tracker = promiseTracker(resolve, reject);
+
+    // errors reject immediately, the first result resolves with an unsubscribe promise, all results via callback
+    const subscription: Subscription = method(...args)
+      .pipe(
+        catchError((error: Error) => tracker.reject(error)),
+        tap(() => tracker.resolve(() => subscription.unsubscribe()))
+      )
+      .subscribe((result): void => {
+        // queue result (back of queue to clear current)
+        setTimeout(() => resultCb(result) as void, 0);
+      });
+  });
+}
+
+/**
+ * @description Decorate method for ApiPromise, where the results are converted to the Promise equivalent
+ */
+export function toPromiseMethod<M extends DecorateFn<ObsInnerType<ReturnType<M>>>> (method: M, options?: DecorateMethodOptions): StorageEntryPromiseOverloads {
+  const needsCallback = !!(options && options.methodName && options.methodName.includes('subscribe'));
+
+  return function (...args: unknown[]): Promise<ObsInnerType<ReturnType<M>>> | UnsubscribePromise {
+    const [actualArgs, resultCb] = extractArgs(args, needsCallback);
+
+    return resultCb
+      ? decorateSubscribe(method, actualArgs, resultCb)
+      : decorateCall((options?.overrideNoSub as M) || method, actualArgs);
+  } as StorageEntryPromiseOverloads;
+}

packages/api/src/promise/index.ts

@@ -1,312 +1,5 @@
 // Copyright 2017-2021 @polkadot/api authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import type { Observable } from 'rxjs';
-import type { Callback, Codec } from '@polkadot/types/types';
-import type { ApiOptions, DecorateFn, DecorateMethodOptions, ObsInnerType, StorageEntryPromiseOverloads, UnsubscribePromise, VoidFn } from '../types';
-
-import { catchError, EMPTY, Subscription, tap } from 'rxjs';
-
-import { assert, isFunction, objectSpread } from '@polkadot/util';
-
-import { ApiBase } from '../base';
-import { Combinator, CombinatorCallback, CombinatorFunction } from './Combinator';
-
-interface Tracker<T> {
-  reject: (value: Error) => Observable<never>;
-  resolve: (value: T) => void;
-}
-
-// extract the arguments and callback params from a value array possibly containing a callback
-function extractArgs (args: unknown[], needsCallback: boolean): [unknown[], Callback<Codec> | undefined] {
-  let callback: Callback<Codec> | undefined;
-  const actualArgs = args.slice();
-
-  // If the last arg is a function, we pop it, put it into callback.
-  // actualArgs will then hold the actual arguments to be passed to `method`
-  if (args.length && isFunction(args[args.length - 1])) {
-    callback = actualArgs.pop() as Callback<Codec>;
-  }
-
-  // When we need a subscription, ensure that a valid callback is actually passed
-  assert(!needsCallback || isFunction(callback), 'Expected a callback to be passed with subscriptions');
-
-  return [actualArgs, callback];
-}
-
-// a Promise completion tracker, wrapping an isComplete variable that ensures the promise only resolves once
-function promiseTracker<T> (resolve: (value: T) => void, reject: (value: Error) => void): Tracker<T> {
-  let isCompleted = false;
-
-  return {
-    reject: (error: Error): Observable<never> => {
-      if (!isCompleted) {
-        isCompleted = true;
-
-        reject(error);
-      }
-
-      return EMPTY;
-    },
-    resolve: (value: T): void => {
-      if (!isCompleted) {
-        isCompleted = true;
-
-        resolve(value);
-      }
-    }
-  };
-}
-
-// Decorate a call for a single-shot result - retrieve and then immediate unsubscribe
-function decorateCall<Method extends DecorateFn<ObsInnerType<ReturnType<Method>>>> (method: Method, actualArgs: unknown[]): Promise<ObsInnerType<ReturnType<Method>>> {
-  return new Promise((resolve, reject): void => {
-    // single result tracker - either reject with Error or resolve with Codec result
-    const tracker = promiseTracker(resolve, reject);
-
-    // encoding errors reject immediately, any result unsubscribes and resolves
-    const subscription: Subscription = method(...actualArgs).pipe(
-      catchError((error: Error) => tracker.reject(error))
-    ).subscribe((result): void => {
-      tracker.resolve(result);
-      setTimeout(() => subscription.unsubscribe(), 0);
-    });
-  });
-}
-
-// Decorate a subscription where we have a result callback specified
-function decorateSubscribe<Method extends DecorateFn<ObsInnerType<ReturnType<Method>>>> (method: Method, actualArgs: unknown[], resultCb: Callback<Codec>): UnsubscribePromise {
-  return new Promise<VoidFn>((resolve, reject): void => {
-    // either reject with error or resolve with unsubscribe callback
-    const tracker = promiseTracker(resolve, reject);
-
-    // errors reject immediately, the first result resolves with an unsubscribe promise, all results via callback
-    const subscription: Subscription = method(...actualArgs).pipe(
-      catchError((error: Error) => tracker.reject(error)),
-      tap(() => tracker.resolve(() => subscription.unsubscribe()))
-    ).subscribe((result): void => {
-      // queue result (back of queue to clear current)
-      setTimeout(() => resultCb(result) as void, 0);
-    });
-  });
-}
-
-/**
- * @description Decorate method for ApiPromise, where the results are converted to the Promise equivalent
- */
-export function decorateMethod<Method extends DecorateFn<ObsInnerType<ReturnType<Method>>>> (method: Method, options?: DecorateMethodOptions): StorageEntryPromiseOverloads {
-  const needsCallback = options && options.methodName && options.methodName.includes('subscribe');
-
-  return function (...args: unknown[]): Promise<ObsInnerType<ReturnType<Method>>> | UnsubscribePromise {
-    const [actualArgs, resultCb] = extractArgs(args, !!needsCallback);
-
-    return resultCb
-      ? decorateSubscribe(method, actualArgs, resultCb)
-      : decorateCall((options?.overrideNoSub as Method) || method, actualArgs);
-  } as StorageEntryPromiseOverloads;
-}
-
-/**
- * # @polkadot/api/promise
- *
- * ## Overview
- *
- * @name ApiPromise
- * @description
- * ApiPromise is a standard JavaScript wrapper around the RPC and interfaces on the Polkadot network. As a full Promise-based, all interface calls return Promises, including the static `.create(...)`. Subscription calls utilise `(value) => {}` callbacks to pass through the latest values.
- *
- * The API is well suited to real-time applications where either the single-shot state is needed or use is to be made of the subscription-based features of Polkadot (and Substrate) clients.
- *
- * @see [[ApiRx]]
- *
- * ## Usage
- *
- * Making rpc calls -
- * <BR>
- *
- * ```javascript
- * import ApiPromise from '@polkadot/api/promise';
- *
- * // initialise via static create
- * const api = await ApiPromise.create();
- *
- * // make a subscription to the network head
- * api.rpc.chain.subscribeNewHeads((header) => {
- *   console.log(`Chain is at #${header.number}`);
- * });
- * ```
- * <BR>
- *
- * Subscribing to chain state -
- * <BR>
- *
- * ```javascript
- * import { ApiPromise, WsProvider } from '@polkadot/api';
- *
- * // initialise a provider with a specific endpoint
- * const provider = new WsProvider('wss://example.com:9944')
- *
- * // initialise via isReady & new with specific provider
- * const api = await new ApiPromise({ provider }).isReady;
- *
- * // retrieve the block target time
- * const blockPeriod = await api.query.timestamp.blockPeriod().toNumber();
- * let last = 0;
- *
- * // subscribe to the current block timestamp, updates automatically (callback provided)
- * api.query.timestamp.now((timestamp) => {
- *   const elapsed = last
- *     ? `, ${timestamp.toNumber() - last}s since last`
- *     : '';
- *
- *   last = timestamp.toNumber();
- *   console.log(`timestamp ${timestamp}${elapsed} (${blockPeriod}s target)`);
- * });
- * ```
- * <BR>
- *
- * Submitting a transaction -
- * <BR>
- *
- * ```javascript
- * import ApiPromise from '@polkadot/api/promise';
- *
- * ApiPromise.create().then((api) => {
- *   const [nonce] = await api.query.system.account(keyring.alice.address);
- *
- *   api.tx.balances
- *     // create transfer
- *     transfer(keyring.bob.address, 12345)
- *     // sign the transcation
- *     .sign(keyring.alice, { nonce })
- *     // send the transaction (optional status callback)
- *     .send((status) => {
- *       console.log(`current status ${status.type}`);
- *     })
- *     // retrieve the submitted extrinsic hash
- *     .then((hash) => {
- *       console.log(`submitted with hash ${hash}`);
- *     });
- * });
- * ```
- */
-export class ApiPromise extends ApiBase<'promise'> {
-  #isReadyPromise: Promise<ApiPromise>;
-  #isReadyOrErrorPromise: Promise<ApiPromise>;
-
-  /**
-   * @description Creates an ApiPromise instance using the supplied provider. Returns an Promise containing the actual Api instance.
-   * @param options options that is passed to the class contructor. Can be either [[ApiOptions]] or a
-   * provider (see the constructor arguments)
-   * @example
-   * <BR>
-   *
-   * ```javascript
-   * import Api from '@polkadot/api/promise';
-   *
-   * Api.create().then(async (api) => {
-   *   const timestamp = await api.query.timestamp.now();
-   *
-   *   console.log(`lastest block timestamp ${timestamp}`);
-   * });
-   * ```
-   */
-  public static create (options?: ApiOptions): Promise<ApiPromise> {
-    const instance = new ApiPromise(options);
-
-    if (options && options.throwOnConnect) {
-      return instance.isReadyOrError;
-    }
-
-    // Swallow any rejections on isReadyOrError
-    // (in Node 15.x this creates issues, when not being looked at)
-    instance.isReadyOrError.catch(() => {
-      // ignore
-    });
-
-    return instance.isReady;
-  }
-
-  /**
-   * @description Creates an instance of the ApiPromise class
-   * @param options Options to create an instance. This can be either [[ApiOptions]] or
-   * an [[WsProvider]].
-   * @example
-   * <BR>
-   *
-   * ```javascript
-   * import Api from '@polkadot/api/promise';
-   *
-   * new Api().isReady.then((api) => {
-   *   api.rpc.subscribeNewHeads((header) => {
-   *     console.log(`new block #${header.number.toNumber()}`);
-   *   });
-   * });
-   * ```
-   */
-  constructor (options?: ApiOptions) {
-    super(options, 'promise', decorateMethod);
-
-    this.#isReadyPromise = new Promise((resolve): void => {
-      super.once('ready', () => resolve(this));
-    });
-
-    this.#isReadyOrErrorPromise = new Promise((resolve, reject): void => {
-      const tracker = promiseTracker(resolve, reject);
-
-      super.once('ready', () => tracker.resolve(this));
-      super.once('error', (error: Error) => tracker.reject(error));
-    });
-  }
-
-  /**
-   * @description Promise that resolves the first time we are connected and loaded
-   */
-  public get isReady (): Promise<ApiPromise> {
-    return this.#isReadyPromise;
-  }
-
-  /**
-   * @description Promise that resolves if we can connect, or reject if there is an error
-   */
-  public get isReadyOrError (): Promise<ApiPromise> {
-    return this.#isReadyOrErrorPromise;
-  }
-
-  /**
-   * @description Returns a clone of this ApiPromise instance (new underlying provider connection)
-   */
-  public clone (): ApiPromise {
-    return new ApiPromise(
-      objectSpread({}, this._options, { source: this })
-    );
-  }
-
-  /**
-   * @description Creates a combinator that can be used to combine the latest results from multiple subscriptions
-   * @param fns An array of function to combine, each in the form of `(cb: (value: void)) => void`
-   * @param callback A callback that will return an Array of all the values this combinator has been applied to
-   * @example
-   * <BR>
-   *
-   * ```javascript
-   * const address = '5DTestUPts3kjeXSTMyerHihn1uwMfLj8vU8sqF7qYrFacT7';
-   *
-   * // combines values from balance & nonce as it updates
-   * api.combineLatest([
-   *   api.rpc.chain.subscribeNewHeads,
-   *   (cb) => api.query.system.account(address, cb)
-   * ], ([head, [balance, nonce]]) => {
-   *   console.log(`#${head.number}: You have ${balance.free} units, with ${nonce} transactions sent`);
-   * });
-   * ```
-   */
-  // eslint-disable-next-line @typescript-eslint/require-await
-  public async combineLatest <T extends any[] = any[]> (fns: (CombinatorFunction | [CombinatorFunction, ...any[]])[], callback: CombinatorCallback<T>): UnsubscribePromise {
-    const combinator = new Combinator(fns, callback);
-
-    return (): void => {
-      combinator.unsubscribe();
-    };
-  }
-}
+export { ApiPromise } from './Api';
+export { toPromiseMethod } from './decorateMethod';

packages/api/src/rx/Api.ts

@@ -0,0 +1,185 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ApiOptions } from '../types';
+
+import { from, Observable } from 'rxjs';
+
+import { objectSpread } from '@polkadot/util';
+
+import { ApiBase } from '../base';
+import { toRxMethod } from './decorateMethod';
+
+/**
+ * # @polkadot/api/rx
+ *
+ *  ## Overview
+ *
+ * @name ApiRx
+ *
+ * @description
+ * ApiRx is a powerful RxJS Observable wrapper around the RPC and interfaces on the Polkadot network. As a full Observable API, all interface calls return RxJS Observables, including the static `.create(...)`. In the same fashion and subscription-based methods return long-running Observables that update with the latest values.
+ *
+ * The API is well suited to real-time applications where the latest state is needed, unlocking the subscription-based features of Polkadot (and Substrate) clients. Some familiarity with RxJS is a requirement to use the API, however just understanding `.subscribe` and `.pipe` on Observables will unlock full-scale use thereof.
+ *
+ * @see [[ApiPromise]]
+ *
+ * ## Usage
+ *
+ * Making rpc calls -
+ * <BR>
+ *
+ * ```javascript
+ * import ApiRx from '@polkadot/api/rx';
+ *
+ * // initialize via Promise & static create
+ * const api = await ApiRx.create().toPromise();
+ *
+ * // make a call to retrieve the current network head
+ * api.rpc.chain.subscribeNewHeads().subscribe((header) => {
+ *   console.log(`Chain is at #${header.number}`);
+ * });
+ * ```
+ * <BR>
+ *
+ * Subscribing to chain state -
+ * <BR>
+ *
+ * ```javascript
+ * import { combineLatest, pairwise, switchMap } from 'rxjs';
+ * import { ApiRx, WsProvider } from '@polkadot/api';
+ *
+ *
+ * // initialize a provider with a specific endpoint
+ * const provider = new WsProvider('wss://example.com:9944')
+ *
+ * // initialize via isReady & new with specific provider
+ * new ApiRx({ provider })
+ *   .isReady
+ *   .pipe(
+ *     switchMap((api) =>
+ *       combineLatest([
+ *         api.query.timestamp.blockPeriod(),
+ *         api.query.timestamp.now().pipe(pairwise())
+ *       ])
+ *     )
+ *   )
+ *   .subscribe(([blockPeriod, timestamp]) => {
+ *      const elapsed = timestamp[1].toNumber() - timestamp[0].toNumber();
+ *      console.log(`timestamp ${timestamp[1]} \nelapsed ${elapsed} \n(${blockPeriod}s target)`);
+ *   });
+ * ```
+ * <BR>
+ *
+ * Submitting a transaction -
+ * <BR>
+ *
+ * ```javascript
+ * import { first, switchMap } from 'rxjs';
+ * import ApiRx from '@polkadot/api/rx';
+ *
+ * // import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
+ * import testingPairs from '@polkadot/keyring/testingPairs';
+ * const keyring = testingPairs();
+ *
+ * // get api via Promise
+ * const api = await ApiRx.create().toPromise();
+ *
+ * // retrieve nonce for the account
+ * api.query.system
+ *   .account(keyring.alice.address)
+ *   .pipe(
+ *      first(),
+ *      // pipe nonce into transfer
+ *      switchMap(([nonce]) =>
+ *        api.tx.balances
+ *          // create transfer
+ *          .transfer(keyring.bob.address, 12345)
+ *          // sign the transaction
+ *          .sign(keyring.alice, { nonce })
+ *          // send the transaction
+ *          .send()
+ *      )
+ *   )
+ *   // subscribe to overall result
+ *   .subscribe(({ status }) => {
+ *     if (status.isInBlock) {
+ *       console.log('Completed at block hash', status.asFinalized.toHex());
+ *     }
+ *   });
+ * ```
+ */
+export class ApiRx extends ApiBase<'rxjs'> {
+  #isReadyRx: Observable<ApiRx>;
+
+  /**
+   * @description Create an instance of the ApiRx class
+   * @param options Options to create an instance. Can be either [[ApiOptions]] or [[WsProvider]]
+   * @example
+   * <BR>
+   *
+   * ```javascript
+   * import { switchMap } from 'rxjs';
+   * import Api from '@polkadot/api/rx';
+   *
+   * new Api().isReady
+   *   .pipe(
+   *     switchMap((api) =>
+   *       api.rpc.chain.subscribeNewHeads()
+   *   ))
+   *   .subscribe((header) => {
+   *     console.log(`new block #${header.number.toNumber()}`);
+   *   });
+   * ```
+   */
+  constructor (options?: ApiOptions) {
+    super(options, 'rxjs', toRxMethod);
+
+    this.#isReadyRx = from<Promise<ApiRx>>(
+      // You can create an observable from an event, however my mind groks this form better
+      new Promise((resolve): void => {
+        super.on('ready', () => resolve(this));
+      })
+    );
+  }
+
+  /**
+   * @description Creates an ApiRx instance using the supplied provider. Returns an Observable containing the actual Api instance.
+   * @param options options that is passed to the class constructor. Can be either [[ApiOptions]] or [[WsProvider]]
+   * @example
+   * <BR>
+   *
+   * ```javascript
+   * import { switchMap } from 'rxjs';
+   * import Api from '@polkadot/api/rx';
+   *
+   * Api.create()
+   *   .pipe(
+   *     switchMap((api) =>
+   *       api.rpc.chain.subscribeNewHeads()
+   *   ))
+   *   .subscribe((header) => {
+   *     console.log(`new block #${header.number.toNumber()}`);
+   *   });
+   * ```
+   */
+  public static create (options?: ApiOptions): Observable<ApiRx> {
+    return new ApiRx(options).isReady;
+  }
+
+  /**
+   * @description Observable that returns the first time we are connected and loaded
+   */
+  public get isReady (): Observable<ApiRx> {
+    return this.#isReadyRx;
+  }
+
+  /**
+   * @description Returns a clone of this ApiRx instance (new underlying provider connection)
+   */
+  public clone (): ApiRx {
+    return new ApiRx(
+      objectSpread({}, this._options, { source: this })
+    );
+  }
+}

packages/api/src/rx/decorateMethod.ts

@@ -0,0 +1,9 @@
+// Copyright 2017-2021 @polkadot/api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Codec } from '@polkadot/types/types';
+import type { DecorateFn } from '../types';
+
+export function toRxMethod <M extends DecorateFn<Codec>> (method: M): M {
+  return method;
+}

packages/api/src/rx/index.ts

@@ -1,189 +1,5 @@
 // Copyright 2017-2021 @polkadot/api authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import type { Codec } from '@polkadot/types/types';
-import type { ApiOptions, DecorateFn } from '../types';
-
-import { from, Observable } from 'rxjs';
-
-import { objectSpread } from '@polkadot/util';
-
-import { ApiBase } from '../base';
-
-export function decorateMethod <Method extends DecorateFn<Codec>> (method: Method): Method {
-  return method;
-}
-
-/**
- * # @polkadot/api/rx
- *
- *  ## Overview
- *
- * @name ApiRx
- *
- * @description
- * ApiRx is a powerful RxJS Observable wrapper around the RPC and interfaces on the Polkadot network. As a full Observable API, all interface calls return RxJS Observables, including the static `.create(...)`. In the same fashion and subscription-based methods return long-running Observables that update with the latest values.
- *
- * The API is well suited to real-time applications where the latest state is needed, unlocking the subscription-based features of Polkadot (and Substrate) clients. Some familiarity with RxJS is a requirement to use the API, however just understanding `.subscribe` and `.pipe` on Observables will unlock full-scale use thereof.
- *
- * @see [[ApiPromise]]
- *
- * ## Usage
- *
- * Making rpc calls -
- * <BR>
- *
- * ```javascript
- * import ApiRx from '@polkadot/api/rx';
- *
- * // initialize via Promise & static create
- * const api = await ApiRx.create().toPromise();
- *
- * // make a call to retrieve the current network head
- * api.rpc.chain.subscribeNewHeads().subscribe((header) => {
- *   console.log(`Chain is at #${header.number}`);
- * });
- * ```
- * <BR>
- *
- * Subscribing to chain state -
- * <BR>
- *
- * ```javascript
- * import { combineLatest, pairwise, switchMap } from 'rxjs';
- * import { ApiRx, WsProvider } from '@polkadot/api';
- *
- *
- * // initialize a provider with a specific endpoint
- * const provider = new WsProvider('wss://example.com:9944')
- *
- * // initialize via isReady & new with specific provider
- * new ApiRx({ provider })
- *   .isReady
- *   .pipe(
- *     switchMap((api) =>
- *       combineLatest([
- *         api.query.timestamp.blockPeriod(),
- *         api.query.timestamp.now().pipe(pairwise())
- *       ])
- *     )
- *   )
- *   .subscribe(([blockPeriod, timestamp]) => {
- *      const elapsed = timestamp[1].toNumber() - timestamp[0].toNumber();
- *      console.log(`timestamp ${timestamp[1]} \nelapsed ${elapsed} \n(${blockPeriod}s target)`);
- *   });
- * ```
- * <BR>
- *
- * Submitting a transaction -
- * <BR>
- *
- * ```javascript
- * import { first, switchMap } from 'rxjs';
- * import ApiRx from '@polkadot/api/rx';
- *
- * // import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
- * import testingPairs from '@polkadot/keyring/testingPairs';
- * const keyring = testingPairs();
- *
- * // get api via Promise
- * const api = await ApiRx.create().toPromise();
- *
- * // retrieve nonce for the account
- * api.query.system
- *   .account(keyring.alice.address)
- *   .pipe(
- *      first(),
- *      // pipe nonce into transfer
- *      switchMap(([nonce]) =>
- *        api.tx.balances
- *          // create transfer
- *          .transfer(keyring.bob.address, 12345)
- *          // sign the transaction
- *          .sign(keyring.alice, { nonce })
- *          // send the transaction
- *          .send()
- *      )
- *   )
- *   // subscribe to overall result
- *   .subscribe(({ status }) => {
- *     if (status.isInBlock) {
- *       console.log('Completed at block hash', status.asFinalized.toHex());
- *     }
- *   });
- * ```
- */
-export class ApiRx extends ApiBase<'rxjs'> {
-  #isReadyRx: Observable<ApiRx>;
-
-  /**
-   * @description Creates an ApiRx instance using the supplied provider. Returns an Observable containing the actual Api instance.
-   * @param options options that is passed to the class constructor. Can be either [[ApiOptions]] or [[WsProvider]]
-   * @example
-   * <BR>
-   *
-   * ```javascript
-   * import { switchMap } from 'rxjs';
-   * import Api from '@polkadot/api/rx';
-   *
-   * Api.create()
-   *   .pipe(
-   *     switchMap((api) =>
-   *       api.rpc.chain.subscribeNewHeads()
-   *   ))
-   *   .subscribe((header) => {
-   *     console.log(`new block #${header.number.toNumber()}`);
-   *   });
-   * ```
-   */
-  public static create (options?: ApiOptions): Observable<ApiRx> {
-    return new ApiRx(options).isReady;
-  }
-
-  /**
-   * @description Create an instance of the ApiRx class
-   * @param options Options to create an instance. Can be either [[ApiOptions]] or [[WsProvider]]
-   * @example
-   * <BR>
-   *
-   * ```javascript
-   * import { switchMap } from 'rxjs';
-   * import Api from '@polkadot/api/rx';
-   *
-   * new Api().isReady
-   *   .pipe(
-   *     switchMap((api) =>
-   *       api.rpc.chain.subscribeNewHeads()
-   *   ))
-   *   .subscribe((header) => {
-   *     console.log(`new block #${header.number.toNumber()}`);
-   *   });
-   * ```
-   */
-  constructor (options?: ApiOptions) {
-    super(options, 'rxjs', decorateMethod);
-
-    this.#isReadyRx = from<Promise<ApiRx>>(
-      // You can create an observable from an event, however my mind groks this form better
-      new Promise((resolve): void => {
-        super.on('ready', () => resolve(this));
-      })
-    );
-  }
-
-  /**
-   * @description Observable that returns the first time we are connected and loaded
-   */
-  public get isReady (): Observable<ApiRx> {
-    return this.#isReadyRx;
-  }
-
-  /**
-   * @description Returns a clone of this ApiRx instance (new underlying provider connection)
-   */
-  public clone (): ApiRx {
-    return new ApiRx(
-      objectSpread({}, this._options, { source: this })
-    );
-  }
-}
+export { ApiRx } from './Api';
+export { toRxMethod } from './decorateMethod';

packages/api/src/types/index.ts

@@ -95,7 +95,7 @@ export interface ApiInterfaceRx {
   runtimeMetadata: Metadata;
   runtimeVersion: RuntimeVersion;
   query: QueryableStorage<'rxjs'>;
-  queryAt: (blockHash: Uint8Array | string) => Observable<QueryableStorage<'rxjs'>>;
+  queryAt: (blockHash: Uint8Array | string, knownVersion?: RuntimeVersion) => Observable<QueryableStorage<'rxjs'>>;
   queryMulti: QueryableStorageMulti<'rxjs'>;
   rpc: DecoratedRpc<'rxjs', RpcInterface>;
   tx: SubmittableExtrinsics<'rxjs'>;

packages/rpc-core/package.json

@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
-    "@polkadot/rpc-provider": "6.7.1",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/rpc-provider": "6.8.1",
+    "@polkadot/types": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "rxjs": "^7.4.0"
   },

packages/rpc-core/src/bundle.ts

@@ -204,7 +204,7 @@ export class RpcCore {
         ? await this.#getBlockRegistry(u8aToU8a(blockHash))
         : { registry: this.#registryDefault };
       const params = this._formatInputs(registry, null, def, values);
-      const result = await this.provider.send<AnyJson>(rpcName, params.map((p) => p.toJSON()));
+      const result = await this.provider.send<AnyJson>(rpcName, params.map((p) => p.toJSON()), !!blockHash);
 
       return this._formatResult(isScale, registry, blockHash, method, def, params, result);
     };

packages/rpc-core/src/methodSend.spec.ts

@@ -62,7 +62,7 @@ describe('methodSend', (): void => {
     // eslint-disable-next-line @typescript-eslint/no-unsafe-call,@typescript-eslint/no-unsafe-member-access
     method(new Uint8Array([2 << 2, 0x12, 0x34])).subscribe((): void => {
       // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-      expect(provider.send).toHaveBeenCalledWith('test_blah', ['0x1234']);
+      expect(provider.send).toHaveBeenCalledWith('test_blah', ['0x1234'], false);
       done();
     });
   });

packages/rpc-core/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/rpc-core', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/rpc-core', version: '6.8.1' };

packages/rpc-provider/package.json

@@ -20,11 +20,11 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/types": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "@polkadot/util-crypto": "^7.8.2",
     "@polkadot/x-fetch": "^7.8.2",
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.8.2",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/types": "6.8.1",
     "mock-socket": "^9.0.7",
     "nock": "^13.1.4"
   }

packages/rpc-provider/src/http/index.ts

@@ -8,6 +8,7 @@ import { fetch } from '@polkadot/x-fetch';
 
 import { RpcCoder } from '../coder';
 import defaults from '../defaults';
+import { LRUCache } from '../lru';
 
 const ERROR_SUBSCRIBE = 'HTTP Provider does not have subscriptions, use WebSockets instead';
 
@@ -34,6 +35,8 @@ const l = logger('api-http');
  * @see [[WsProvider]]
  */
 export class HttpProvider implements ProviderInterface {
+  readonly #callCache = new LRUCache();
+
   readonly #coder: RpcCoder;
 
   readonly #endpoint: string;
@@ -103,8 +106,24 @@ export class HttpProvider implements ProviderInterface {
   /**
    * @summary Send HTTP POST Request with Body to configured HTTP Endpoint.
    */
-  public async send <T> (method: string, params: unknown[]): Promise<T> {
+  public async send <T> (method: string, params: unknown[], isCacheable?: boolean): Promise<T> {
     const body = this.#coder.encodeJson(method, params);
+    let resultPromise: Promise<T> | null = isCacheable
+      ? this.#callCache.get(body) as Promise<T>
+      : null;
+
+    if (!resultPromise) {
+      resultPromise = this.#send(body);
+
+      if (isCacheable) {
+        this.#callCache.set(body, resultPromise);
+      }
+    }
+
+    return resultPromise;
+  }
+
+  async #send <T> (body: string): Promise<T> {
     const response = await fetch(this.#endpoint, {
       body,
       headers: {

packages/rpc-provider/src/lru.spec.ts

@@ -0,0 +1,55 @@
+// Copyright 2017-2021 @polkadot/rpc-provider authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { LRUCache } from './lru';
+
+describe('LRUCache', (): void => {
+  it('allows getting of items below capacity', (): void => {
+    const keys = ['1', '2', '3', '4'];
+    const lru = new LRUCache(4);
+
+    keys.forEach((k) => lru.set(k, `${k}${k}${k}`));
+
+    expect(lru.keys().join(', ')).toEqual(keys.reverse().join(', '));
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+
+    keys.forEach((k) => expect(lru.get(k)).toEqual(`${k}${k}${k}`));
+  });
+
+  it('drops items when at capacity', (): void => {
+    const keys = ['1', '2', '3', '4', '5', '6'];
+    const lru = new LRUCache(4);
+
+    keys.forEach((k) => lru.set(k, `${k}${k}${k}`));
+
+    expect(lru.keys().join(', ')).toEqual(keys.slice(2).reverse().join(', '));
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+
+    keys.slice(2).forEach((k) => expect(lru.get(k)).toEqual(`${k}${k}${k}`));
+  });
+
+  it('adjusts the order as they are used', (): void => {
+    const keys = ['1', '2', '3', '4', '5'];
+    const lru = new LRUCache(4);
+
+    keys.forEach((k) => lru.set(k, `${k}${k}${k}`));
+
+    expect(lru.entries()).toEqual([['5', '555'], ['4', '444'], ['3', '333'], ['2', '222']]);
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+
+    lru.get('3');
+
+    expect(lru.entries()).toEqual([['3', '333'], ['5', '555'], ['4', '444'], ['2', '222']]);
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+
+    lru.set('4', '4433');
+
+    expect(lru.entries()).toEqual([['4', '4433'], ['3', '333'], ['5', '555'], ['2', '222']]);
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+
+    lru.set('6', '666');
+
+    expect(lru.entries()).toEqual([['6', '666'], ['4', '4433'], ['3', '333'], ['5', '555']]);
+    expect(lru.length === lru.lengthData && lru.length === lru.lengthRefs).toBe(true);
+  });
+});

packages/rpc-provider/src/lru.ts

@@ -0,0 +1,128 @@
+// Copyright 2017-2021 @polkadot/rpc-provider authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+const DEFAULT_CAPACITY = 2048;
+
+class LRUNode {
+  public readonly key: string;
+
+  public next: LRUNode;
+  public prev: LRUNode;
+
+  constructor (key: string) {
+    this.key = key;
+    this.next = this.prev = this;
+  }
+}
+
+// https://en.wikipedia.org/wiki/Cache_replacement_policies#LRU
+export class LRUCache {
+  readonly capacity: number;
+  readonly #data: Map<string, unknown> = new Map();
+  readonly #refs: Map<string, LRUNode> = new Map();
+
+  #length = 0;
+  #head: LRUNode;
+  #tail: LRUNode;
+
+  constructor (capacity = DEFAULT_CAPACITY) {
+    this.capacity = capacity;
+    this.#head = this.#tail = new LRUNode('<empty>');
+  }
+
+  get length (): number {
+    return this.#length;
+  }
+
+  get lengthData (): number {
+    return this.#data.size;
+  }
+
+  get lengthRefs (): number {
+    return this.#refs.size;
+  }
+
+  entries (): [string, unknown][] {
+    const keys = this.keys();
+    const entries = new Array<[string, unknown]>(keys.length);
+
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i];
+
+      entries[i] = [key, this.#data.get(key)];
+    }
+
+    return entries;
+  }
+
+  keys (): string[] {
+    const keys: string[] = [];
+
+    if (this.#length) {
+      let curr = this.#head;
+
+      while (curr !== this.#tail) {
+        keys.push(curr.key);
+        curr = curr.next;
+      }
+
+      keys.push(curr.key);
+    }
+
+    return keys;
+  }
+
+  get <T> (key: string): T | null {
+    const data = this.#data.get(key);
+
+    if (data) {
+      this.#toHead(key);
+
+      return data as T;
+    }
+
+    return null;
+  }
+
+  set <T> (key: string, value: T): void {
+    if (this.#data.has(key)) {
+      this.#toHead(key);
+    } else {
+      const node = new LRUNode(key);
+
+      this.#refs.set(node.key, node);
+
+      if (this.length === 0) {
+        this.#head = this.#tail = node;
+      } else {
+        this.#head.prev = node;
+        node.next = this.#head;
+        this.#head = node;
+      }
+
+      if (this.#length === this.capacity) {
+        this.#data.delete(this.#tail.key);
+        this.#refs.delete(this.#tail.key);
+
+        this.#tail = this.#tail.prev;
+      } else {
+        this.#length += 1;
+      }
+    }
+
+    this.#data.set(key, value);
+  }
+
+  #toHead (key: string): void {
+    const ref = this.#refs.get(key);
+
+    if (ref && ref !== this.#head) {
+      ref.prev.next = ref.next;
+      ref.next.prev = ref.prev;
+      ref.next = this.#head;
+
+      this.#head.prev = ref;
+      this.#head = ref;
+    }
+  }
+}

packages/rpc-provider/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/rpc-provider', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/rpc-provider', version: '6.8.1' };

packages/rpc-provider/src/types.ts

@@ -49,7 +49,7 @@ export interface ProviderInterface {
   connect (): Promise<void>;
   disconnect (): Promise<void>;
   on (type: ProviderInterfaceEmitted, sub: ProviderInterfaceEmitCb): () => void;
-  send <T = any> (method: string, params: unknown[]): Promise<T>;
+  send <T = any> (method: string, params: unknown[], isCacheable?: boolean): Promise<T>;
   subscribe (type: string, method: string, params: unknown[], cb: ProviderInterfaceCallback): Promise<number | string>;
   unsubscribe (type: string, method: string, id: number | string): Promise<boolean>;
 }

packages/rpc-provider/src/ws/index.ts

@@ -7,12 +7,13 @@ import type { JsonRpcResponse, ProviderInterface, ProviderInterfaceCallback, Pro
 
 import EventEmitter from 'eventemitter3';
 
-import { assert, isChildClass, isNull, isUndefined, logger } from '@polkadot/util';
+import { assert, isChildClass, isNull, isUndefined, logger, objectSpread } from '@polkadot/util';
 import { xglobal } from '@polkadot/x-global';
 import { WebSocket } from '@polkadot/x-ws';
 
 import { RpcCoder } from '../coder';
 import defaults from '../defaults';
+import { LRUCache } from '../lru';
 import { getWSErrorString } from './errors';
 
 interface SubscriptionHandler {
@@ -75,6 +76,8 @@ function eraseRecord<T> (record: Record<string, T>, cb?: (item: T) => void): voi
  * @see [[HttpProvider]]
  */
 export class WsProvider implements ProviderInterface {
+  readonly #callCache = new LRUCache();
+
   readonly #coder: RpcCoder;
 
   readonly #endpoints: string[];
@@ -260,12 +263,28 @@ export class WsProvider implements ProviderInterface {
    * @param params Encoded parameters as applicable for the method
    * @param subscription Subscription details (internally used)
    */
-  public send <T = any> (method: string, params: unknown[], subscription?: SubscriptionHandler): Promise<T> {
+  public send <T = any> (method: string, params: unknown[], isCacheable?: boolean, subscription?: SubscriptionHandler): Promise<T> {
+    const body = this.#coder.encodeJson(method, params);
+    let resultPromise: Promise<T> | null = isCacheable
+      ? this.#callCache.get(body) as Promise<T>
+      : null;
+
+    if (!resultPromise) {
+      resultPromise = this.#send(body, method, params, subscription);
+
+      if (isCacheable) {
+        this.#callCache.set(body, resultPromise);
+      }
+    }
+
+    return resultPromise;
+  }
+
+  async #send <T> (json: string, method: string, params: unknown[], subscription?: SubscriptionHandler): Promise<T> {
     return new Promise<T>((resolve, reject): void => {
       try {
         assert(this.isConnected && !isNull(this.#websocket), 'WebSocket is not connected');
 
-        const json = this.#coder.encodeJson(method, params);
         const id = this.#coder.getId();
 
         const callback = (error?: Error | null, result?: T): void => {
@@ -309,7 +328,7 @@ export class WsProvider implements ProviderInterface {
    * ```
    */
   public subscribe (type: string, method: string, params: unknown[], callback: ProviderInterfaceCallback): Promise<number | string> {
-    return this.send<number | string>(method, params, { callback, type });
+    return this.send<number | string>(method, params, false, { callback, type });
   }
 
   /**
@@ -410,11 +429,10 @@ export class WsProvider implements ProviderInterface {
       if (subscription) {
         const subId = `${subscription.type}::${result}`;
 
-        this.#subscriptions[subId] = {
-          ...subscription,
+        this.#subscriptions[subId] = objectSpread({}, subscription, {
           method,
           params
-        };
+        });
 
         // if we have a result waiting for this subscription already
         if (this.#waitingForId[subId]) {

packages/typegen/package.json

@@ -20,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "bin": {
     "polkadot-types-chain-info": "./scripts/polkadot-types-chain-info.cjs",
@@ -33,10 +33,10 @@
     "@babel/core": "^7.16.0",
     "@babel/register": "^7.16.0",
     "@babel/runtime": "^7.16.0",
-    "@polkadot/api": "6.7.1",
-    "@polkadot/rpc-provider": "6.7.1",
-    "@polkadot/types": "6.7.1",
-    "@polkadot/types-support": "6.7.1",
+    "@polkadot/api": "6.8.1",
+    "@polkadot/rpc-provider": "6.8.1",
+    "@polkadot/types": "6.8.1",
+    "@polkadot/types-support": "6.8.1",
     "@polkadot/util": "^7.8.2",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",

packages/typegen/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/typegen', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/typegen', version: '6.8.1' };

packages/types-known/package.json

@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
     "@polkadot/networks": "^7.8.2",
-    "@polkadot/types": "6.7.1",
+    "@polkadot/types": "6.8.1",
     "@polkadot/util": "^7.8.2"
   }
 }

packages/types-known/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/types-known', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/types-known', version: '6.8.1' };

packages/types-known/src/spec/kusama.ts

@@ -185,7 +185,7 @@ const versioned: OverrideVersionedType[] = [
   {
     // metadata v14
     minmax: [9106, undefined],
-    types: objectSpread({}, sharedTypes)
+    types: {}
   }
 ];
 

packages/types-known/src/spec/polkadot.ts

@@ -73,7 +73,7 @@ const versioned: OverrideVersionedType[] = [
   {
     // metadata v14
     minmax: [9110, undefined],
-    types: objectSpread({}, sharedTypes)
+    types: {}
   }
 ];
 

packages/types-known/src/spec/rococo.ts

@@ -49,7 +49,7 @@ const versioned: OverrideVersionedType[] = [
   {
     // metadata v14
     minmax: [9106, undefined],
-    types: objectSpread({}, sharedTypes)
+    types: {}
   }
 ];
 

packages/types-known/src/spec/statemint.ts

@@ -37,7 +37,7 @@ const versioned: OverrideVersionedType[] = [
   {
     // metadata V14
     minmax: [500, undefined],
-    types: objectSpread({}, sharedTypes)
+    types: {}
   }
 ];
 

packages/types-known/src/spec/westend.ts

@@ -91,7 +91,7 @@ const versioned: OverrideVersionedType[] = [
   {
     // metadata v14
     minmax: [9106, undefined],
-    types: objectSpread({}, sharedTypes)
+    types: {}
   }
 ];
 

packages/types-known/src/upgrades/polkadot.ts

@@ -9,7 +9,7 @@ const upgrades: ChainUpgradesRaw = [
   [528470, 13], [687751, 14], [746085, 15], [787923, 16], [799302, 17],
   [1205128, 18], [1603423, 23], [1733218, 24], [2005673, 25], [2436698, 26],
   [3613564, 27], [3899547, 28], [4345767, 29], [4876134, 30], [5661442, 9050],
-  [6321619, 9080], [6713249, 9090], [7217907, 9100], [7229126, 9110]
+  [6321619, 9080], [6713249, 9090], [7217907, 9100], [7229126, 9110], [7560558, 9122]
 ];
 
 export default upgrades;

packages/types-support/package.json

@@ -20,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",

packages/types-support/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/types-support', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/types-support', version: '6.8.1' };

packages/types/package.json

@@ -20,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.7.1",
+  "version": "6.8.1",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.0",
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^7.8.2",
-    "@polkadot/types-support": "6.7.1",
+    "@polkadot/types-support": "6.8.1",
     "@types/bn.js": "^4.11.6",
     "bn.js": "^4.12.0"
   }

packages/types/src/augment/lookup/polkadot.ts

@@ -214,7 +214,7 @@ export default {
     bitfields: 'Vec<PolkadotPrimitivesV1SignedUncheckedSigned>',
     backedCandidates: 'Vec<PolkadotPrimitivesV1BackedCandidate>',
     disputes: 'Vec<PolkadotPrimitivesV1DisputeStatementSet>',
-    parentHeader: 'SpRuntimeGenericHeader'
+    parentHeader: 'SpRuntimeHeader'
   },
   /**
    * Lookup325: polkadot_primitives::v1::signed::UncheckedSigned<polkadot_primitives::v1::AvailabilityBitfield, polkadot_primitives::v1::AvailabilityBitfield>

packages/types/src/augment/lookup/substrate.ts

@@ -36,13 +36,13 @@ export default {
   /**
    * Lookup11: sp_runtime::generic::digest::Digest<primitive_types::H256>
    **/
-  SpRuntimeGenericDigest: {
-    logs: 'Vec<SpRuntimeGenericDigestDigestItem>'
+  SpRuntimeDigest: {
+    logs: 'Vec<SpRuntimeDigestDigestItem>'
   },
   /**
    * Lookup13: sp_runtime::generic::digest::DigestItem<primitive_types::H256>
    **/
-  SpRuntimeGenericDigestDigestItem: {
+  SpRuntimeDigestDigestItem: {
     _enum: {
       Other: 'Bytes',
       __Unused1: 'Null',
@@ -51,14 +51,14 @@ export default {
       Consensus: '([u8;4],Bytes)',
       Seal: '([u8;4],Bytes)',
       PreRuntime: '([u8;4],Bytes)',
-      ChangesTrieSignal: 'SpRuntimeGenericDigestChangesTrieSignal',
+      ChangesTrieSignal: 'SpRuntimeDigestChangesTrieSignal',
       RuntimeEnvironmentUpdated: 'Null'
     }
   },
   /**
    * Lookup15: sp_runtime::generic::digest::ChangesTrieSignal
    **/
-  SpRuntimeGenericDigestChangesTrieSignal: {
+  SpRuntimeDigestChangesTrieSignal: {
     _enum: {
       NewConfiguration: 'Option<SpCoreChangesTrieChangesTrieConfiguration>'
     }
@@ -271,18 +271,18 @@ export default {
   SpConsensusSlotsEquivocationProof: {
     offender: 'SpConsensusBabeAppPublic',
     slot: 'u64',
-    firstHeader: 'SpRuntimeGenericHeader',
-    secondHeader: 'SpRuntimeGenericHeader'
+    firstHeader: 'SpRuntimeHeader',
+    secondHeader: 'SpRuntimeHeader'
   },
   /**
    * Lookup123: sp_runtime::generic::header::Header<Number, sp_runtime::traits::BlakeTwo256>
    **/
-  SpRuntimeGenericHeader: {
+  SpRuntimeHeader: {
     parentHash: 'H256',
     number: 'Compact<u32>',
     stateRoot: 'H256',
     extrinsicsRoot: 'H256',
-    digest: 'SpRuntimeGenericDigest'
+    digest: 'SpRuntimeDigest'
   },
   /**
    * Lookup124: sp_runtime::traits::BlakeTwo256

packages/types/src/augment/lookup/types-polkadot.ts

@@ -160,7 +160,7 @@ declare module '@polkadot/types/lookup' {
     readonly bitfields: Vec<PolkadotPrimitivesV1SignedUncheckedSigned>;
     readonly backedCandidates: Vec<PolkadotPrimitivesV1BackedCandidate>;
     readonly disputes: Vec<PolkadotPrimitivesV1DisputeStatementSet>;
-    readonly parentHeader: SpRuntimeGenericHeader;
+    readonly parentHeader: SpRuntimeHeader;
   }
 
   /** @name PolkadotPrimitivesV1SignedUncheckedSigned (325) */

packages/types/src/augment/lookup/types-substrate.ts

@@ -33,13 +33,13 @@ declare module '@polkadot/types/lookup' {
     readonly mandatory: u64;
   }
 
-  /** @name SpRuntimeGenericDigest (11) */
-  export interface SpRuntimeGenericDigest extends Struct {
-    readonly logs: Vec<SpRuntimeGenericDigestDigestItem>;
+  /** @name SpRuntimeDigest (11) */
+  export interface SpRuntimeDigest extends Struct {
+    readonly logs: Vec<SpRuntimeDigestDigestItem>;
   }
 
-  /** @name SpRuntimeGenericDigestDigestItem (13) */
-  export interface SpRuntimeGenericDigestDigestItem extends Enum {
+  /** @name SpRuntimeDigestDigestItem (13) */
+  export interface SpRuntimeDigestDigestItem extends Enum {
     readonly isOther: boolean;
     readonly asOther: Bytes;
     readonly isChangesTrieRoot: boolean;
@@ -51,12 +51,12 @@ declare module '@polkadot/types/lookup' {
     readonly isPreRuntime: boolean;
     readonly asPreRuntime: ITuple<[U8aFixed, Bytes]>;
     readonly isChangesTrieSignal: boolean;
-    readonly asChangesTrieSignal: SpRuntimeGenericDigestChangesTrieSignal;
+    readonly asChangesTrieSignal: SpRuntimeDigestChangesTrieSignal;
     readonly isRuntimeEnvironmentUpdated: boolean;
   }
 
-  /** @name SpRuntimeGenericDigestChangesTrieSignal (15) */
-  export interface SpRuntimeGenericDigestChangesTrieSignal extends Enum {
+  /** @name SpRuntimeDigestChangesTrieSignal (15) */
+  export interface SpRuntimeDigestChangesTrieSignal extends Enum {
     readonly isNewConfiguration: boolean;
     readonly asNewConfiguration: Option<SpCoreChangesTrieChangesTrieConfiguration>;
   }
@@ -260,17 +260,17 @@ declare module '@polkadot/types/lookup' {
   export interface SpConsensusSlotsEquivocationProof extends Struct {
     readonly offender: SpConsensusBabeAppPublic;
     readonly slot: u64;
-    readonly firstHeader: SpRuntimeGenericHeader;
-    readonly secondHeader: SpRuntimeGenericHeader;
+    readonly firstHeader: SpRuntimeHeader;
+    readonly secondHeader: SpRuntimeHeader;
   }
 
-  /** @name SpRuntimeGenericHeader (123) */
-  export interface SpRuntimeGenericHeader extends Struct {
+  /** @name SpRuntimeHeader (123) */
+  export interface SpRuntimeHeader extends Struct {
     readonly parentHash: H256;
     readonly number: Compact<u32>;
     readonly stateRoot: H256;
     readonly extrinsicsRoot: H256;
-    readonly digest: SpRuntimeGenericDigest;
+    readonly digest: SpRuntimeDigest;
   }
 
   /** @name SpRuntimeBlakeTwo256 (124) */

packages/types/src/extrinsic/v4/ExtrinsicSignature.spec.ts

@@ -68,8 +68,8 @@ describe('ExtrinsicSignatureV4', (): void => {
       '00' + // MultiAddress
       'd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d' +
       '01' +
-      '4242424242424242424242424242424242424242424242424242424242424242' +
-      '4242424242424242424242424242424242424242424242424242424242424242' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
       '00a50100'
     );
   });
@@ -92,13 +92,39 @@ describe('ExtrinsicSignatureV4', (): void => {
       ).toHex()
     ).toEqual(
       '0x' +
-      // Address = AccountId
-      // '00' +
+      // Address = AccountId, no prefix
       'd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d' +
       // This is a prefix-less signature, anySignture as opposed to Multi above
-      // '01' +
-      '4242424242424242424242424242424242424242424242424242424242424242' +
-      '4242424242424242424242424242424242424242424242424242424242424242' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
+      '00a50100'
+    );
+  });
+
+  it('fake signs with non-enum signature', (): void => {
+    const registry = new TypeRegistry();
+    const metadata = new Metadata(registry, metadataStatic);
+
+    registry.setMetadata(metadata);
+    registry.register({
+      Address: 'AccountId',
+      ExtrinsicSignature: '[u8;65]'
+    });
+
+    expect(
+      new ExtrinsicSignature(registry).signFake(
+        registry.createType('Call'),
+        pairs.alice.address,
+        signOptions
+      ).toHex()
+    ).toEqual(
+      '0x' +
+      // Address = AccountId, no prefix
+      'd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d' +
+      // 65 bytes here
+      '01' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
+      '0101010101010101010101010101010101010101010101010101010101010101' +
       '00a50100'
     );
   });

packages/types/src/extrinsic/v4/ExtrinsicSignature.ts

@@ -7,16 +7,15 @@ import type { Address, Balance, Call, Index } from '../../interfaces/runtime';
 import type { ExtrinsicPayloadValue, IExtrinsicSignature, IKeyringPair, Registry, SignatureOptions } from '../../types';
 import type { ExtrinsicSignatureOptions } from '../types';
 
-import { assert, isU8a, isUndefined, objectProperties, objectSpread, stringify, u8aConcat, u8aToHex } from '@polkadot/util';
+import { assert, isU8a, isUndefined, objectProperties, objectSpread, stringify, u8aToHex } from '@polkadot/util';
 
 import { Compact } from '../../codec/Compact';
-import { Enum } from '../../codec/Enum';
 import { Struct } from '../../codec/Struct';
 import { EMPTY_U8A, IMMORTAL_ERA } from '../constants';
 import { GenericExtrinsicPayloadV4 } from './ExtrinsicPayload';
 
-const FAKE_NONE = new Uint8Array();
-const FAKE_SOME = new Uint8Array([1]);
+// Ensure we have enough data for all types of signatures
+const FAKE_SIGNATURE = new Uint8Array(256).fill(1);
 
 function toAddress (registry: Registry, address: Address | Uint8Array | string): Address {
   return registry.createType('Address', isU8a(address) ? u8aToHex(address) : address);
@@ -28,7 +27,6 @@ function toAddress (registry: Registry, address: Address | Uint8Array | string):
  * A container for the [[Signature]] associated with a specific [[Extrinsic]]
  */
 export class GenericExtrinsicSignatureV4 extends Struct implements IExtrinsicSignature {
-  #fakePrefix: Uint8Array;
   #signKeys: string[];
 
   constructor (registry: Registry, value?: GenericExtrinsicSignatureV4 | Uint8Array, { isSigned }: ExtrinsicSignatureOptions = {}) {
@@ -44,9 +42,6 @@ export class GenericExtrinsicSignatureV4 extends Struct implements IExtrinsicSig
       GenericExtrinsicSignatureV4.decodeExtrinsicSignature(value, isSigned)
     );
 
-    this.#fakePrefix = registry.createType('ExtrinsicSignature') instanceof Enum
-      ? FAKE_SOME
-      : FAKE_NONE;
     this.#signKeys = Object.keys(signTypes);
 
     objectProperties(this, this.#signKeys, (k) => this.get(k));
@@ -188,7 +183,7 @@ export class GenericExtrinsicSignatureV4 extends Struct implements IExtrinsicSig
 
     const signer = toAddress(this.registry, address);
     const payload = this.createPayload(method, options);
-    const signature = this.registry.createType('ExtrinsicSignature', u8aConcat(this.#fakePrefix, new Uint8Array(64).fill(0x42)));
+    const signature = this.registry.createType('ExtrinsicSignature', FAKE_SIGNATURE);
 
     return this._injectSignature(signer, signature, payload);
   }

packages/types/src/metadata/PortableRegistry/PortableRegistry.ts

@@ -25,7 +25,7 @@ const PRIMITIVE_ALIAS: Record<string, string> = {
 };
 
 // These are types where we have a specific decoding/encoding override + helpers
-const PATHS_PRIMITIVE = splitNamespace([
+const PATHS_ALIAS = splitNamespace([
   // match {node, polkadot, ...}_runtime
   '*_runtime::Call',
   '*_runtime::Event',
@@ -57,10 +57,17 @@ const WRAPPERS = ['BoundedBTreeMap', 'BoundedVec', 'Box', 'BTreeMap', 'Cow', 'Re
 // These are reserved and/or conflicts with built-in Codec or JS definitions
 const RESERVED = ['entries', 'hash', 'keys', 'new', 'size'];
 
+// Remove these from all paths at index 1
+const PATH_RM_INDEX_1 = ['generic', 'misc', 'pallet', 'traits', 'types'];
+
 function splitNamespace (values: string[]): string[][] {
   return values.map((v) => v.split('::'));
 }
 
+function createNamespace ({ path }: SiType): string {
+  return sanitizeDocs(path).join('::');
+}
+
 function sanitizeDocs (docs: Text[]): string[] {
   return docs.map((d) => d.toString());
 }
@@ -91,25 +98,42 @@ function matchParts (first: string[], second: (string | Text)[]): boolean {
   });
 }
 
-// check if the path matches the PRIMITIVE_SP (with wildcards)
-function getPrimitivePath (path: SiPath): string | null {
+// check if the path matches the PATHS_ALIAS (with wildcards)
+function getAliasPath (path: SiPath): string | null {
   // TODO We need to handle ink! Balance in some way
-  return path.length && PATHS_PRIMITIVE.some((p) => matchParts(p, path))
+  return path.length && PATHS_ALIAS.some((p) => matchParts(p, path))
     ? path[path.length - 1].toString()
     : null;
 }
 
-function removeDuplicateNames (lookup: PortableRegistry, names: [number, string | null, SiTypeParameter[]][]): [number, string][] {
+function hasNoDupes (input: [number, string, SiTypeParameter[]][]): boolean {
+  for (let i = 0; i < input.length; i++) {
+    const [ai, an] = input[i];
+
+    for (let j = 0; j < input.length; j++) {
+      const [bi, bn] = input[j];
+
+      // if the indexes are not the same and the names match, we have a dupe
+      if (ai !== bi && an === bn) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+function removeDuplicateNames (lookup: PortableRegistry, names: [number, string | null, SiTypeParameter[]][]): [number, string, SiTypeParameter[]][] {
   const rewrite: Record<number, string> = {};
 
   return names
-    .map(([lookupIndex, name, params]): [number, string | null] => {
+    .map(([lookupIndex, name, params]): [number, string, SiTypeParameter[]] | null => {
       if (!name) {
-        return [lookupIndex, null];
+        return null;
       }
 
-      // those where the name is matching
-      const allSame = names.filter(([, oName]) => name === oName);
+      // those where the name is matching (since name is filtered, these all do have names)
+      const allSame = names.filter(([, oName]) => name === oName) as [number, string, SiTypeParameter[]][];
 
       // are there among matching names
       const anyDiff = allSame.some(([oIndex,, oParams]) =>
@@ -124,7 +148,7 @@ function removeDuplicateNames (lookup: PortableRegistry, names: [number, string
 
       // everything matches, we can combine these
       if (!anyDiff || !allSame[0][2].length) {
-        return [lookupIndex, name];
+        return [lookupIndex, name, params];
       }
 
       // find the first parameter that yields differences
@@ -138,78 +162,76 @@ function removeDuplicateNames (lookup: PortableRegistry, names: [number, string
 
       // No param found that is different
       if (paramIdx === -1) {
-        return [lookupIndex, name];
+        return [lookupIndex, name, params];
       }
 
       // see if using the param type helps
-      const adjusted = allSame.map(([oIndex, oName, oParams]): [number, string | null] => {
+      const adjusted = new Array<[number, string, SiTypeParameter[]]>(allSame.length);
+
+      for (let i = 0; i < allSame.length; i++) {
+        const [oIndex, oName, oParams] = allSame[i];
         const { def, path } = lookup.getSiType(oParams[paramIdx].type.unwrap());
 
         if (!def.isPrimitive && !path.length) {
-          return [oIndex, null];
+          return null;
         }
 
-        return [
+        adjusted[i] = [
           oIndex,
           def.isPrimitive
-            ? `${oName as string}${def.asPrimitive.toString()}`
-            : `${oName as string}${path[path.length - 1].toString()}`
+            ? `${oName}${def.asPrimitive.toString()}`
+            : `${oName}${path[path.length - 1].toString()}`,
+          params
         ];
-      });
-
-      // any dupes remaining?
-      const noDupes = adjusted.every(([i, n]) =>
-        !!n &&
-        !adjusted.some(([ai, an]) =>
-          i !== ai &&
-          n === an
-        )
-      );
-
-      if (noDupes) {
-        // we filtered above for null names
-        adjusted.forEach(([index, name]): void => {
-          rewrite[index] = name as string;
-        });
       }
 
-      return noDupes
-        ? [lookupIndex, name]
-        : [lookupIndex, null];
+      if (hasNoDupes(adjusted)) {
+        for (let i = 0; i < adjusted.length; i++) {
+          const [index, name] = adjusted[i];
+
+          rewrite[index] = name;
+        }
+
+        return [lookupIndex, name, params];
+      }
+
+      return null;
     })
-    .filter((n): n is [number, string] => !!n[1])
-    .map(([lookupIndex, name]) => [
+    .filter((n): n is [number, string, SiTypeParameter[]] => !!n)
+    .map(([lookupIndex, name, params]) => [
       lookupIndex,
-      rewrite[lookupIndex] || name
+      rewrite[lookupIndex] || name,
+      params
     ]);
 }
 
-function extractName (types: PortableType[], { id, type: { params, path } }: PortableType): [number, string | null, SiTypeParameter[]] {
-  const lookupIndex = id.toNumber();
-
+function extractName (types: PortableType[], { id, type: { params, path } }: PortableType): [number, string, SiTypeParameter[]] | null {
+  // if we have no path or determined as a wrapper, we just skip it
   if (!path.length || WRAPPERS.includes(path[path.length - 1].toString())) {
-    return [lookupIndex, null, []];
+    return null;
   }
 
   const parts = path
     .map((p) => stringUpperFirst(stringCamelCase(p)))
-    .filter((p, index) =>
-      (
-        // Remove ::{misc, pallet, traits, types}::
+    .filter((p, index) => {
+      const lower = p.toLowerCase();
+
+      return (
+        // Remove ::{generic, misc, pallet, traits, types}::
         index !== 1 ||
-        !['Misc', 'Pallet', 'Traits', 'Types'].includes(p.toString())
+        !PATH_RM_INDEX_1.includes(lower)
       ) &&
       (
         // sp_runtime::generic::digest::Digest -> sp_runtime::generic::Digest
         // sp_runtime::multiaddress::MultiAddress -> sp_runtime::MultiAddress
         index === path.length - 1 ||
-        p.toLowerCase() !== path[index + 1].toLowerCase()
-      )
-    );
+        lower !== path[index + 1].toLowerCase()
+      );
+    });
   let typeName = parts.join('');
 
-  if (parts.length === 2 && parts[parts.length - 1] === 'RawOrigin' && params.length === 2 && params[1].type.isSome) {
-    // Do magic for RawOrigin lookup
+  // do magic for RawOrigin lookup, e.g. pallet_collective::RawOrigin
+  if (parts.length === 2 && parts[1] === 'RawOrigin' && params.length === 2 && params[1].type.isSome) {
     const instanceType = types[params[1].type.unwrap().toNumber()];
 
     if (instanceType.type.path.length === 2) {
@@ -217,41 +239,76 @@ function extractName (types: PortableType[], { id, type: { params, path } }: Por
     }
   }
 
-  return [lookupIndex, typeName, params];
+  return [id.toNumber(), typeName, params];
 }
 
-function extractNames (lookup: PortableRegistry, types: PortableType[]): Record<number, string> {
-  const dedup = removeDuplicateNames(lookup, types.map((t) =>
-    extractName(types, t)
-  ));
+function registerTypes (lookup: PortableRegistry, lookups: Record<string, string>, names: Record<number, string>, params: Record<string, SiTypeParameter[]>): void {
+  // Register the types we extracted
+  lookup.registry.register(lookups);
 
-  const names: Record<number, string> = {};
+  // Try and extract the AccountId/Address/Signature type from UncheckedExtrinsic
+  if (params.SpRuntimeUncheckedExtrinsic) {
+    // Address, Call, Signature, Extra
+    const [addrParam,, sigParam] = params.SpRuntimeUncheckedExtrinsic;
+    const siAddress = lookup.getSiType(addrParam.type.unwrap());
+    const siSignature = lookup.getSiType(sigParam.type.unwrap());
+    const nsSignature = createNamespace(siSignature);
+    let nsAccountId = createNamespace(siAddress);
+    const isMultiAddress = nsAccountId === 'sp_runtime::multiaddress::MultiAddress';
+
+    // With multiaddress, we check the first type param again
+    if (isMultiAddress) {
+      // AccountId, AccountIndex
+      const [idParam] = siAddress.params;
+
+      nsAccountId = createNamespace(lookup.getSiType(idParam.type.unwrap()));
+    }
+
+    lookup.registry.register({
+      AccountId: ['sp_core::crypto::AccountId32'].includes(nsAccountId)
+        ? 'AccountId32'
+        : ['account::AccountId20', 'primitive_types::H160'].includes(nsAccountId)
+          ? 'AccountId20'
+          : 'AccountId32', // other, default to AccountId32
+      Address: isMultiAddress
+        ? 'MultiAddress'
+        : 'AccountId',
+      ExtrinsicSignature: ['sp_runtime::MultiSignature'].includes(nsSignature)
+        ? 'MultiSignature'
+        : names[sigParam.type.unwrap().toNumber()] || 'MultiSignature'
+    });
+  }
+}
+
+function extractTypeInfo (lookup: PortableRegistry, portable: PortableType[]): [Record<number, PortableType>, Record<string, string>, Record<number, string>, Record<string, SiTypeParameter[]>] {
+  const nameInfo: [number, string, SiTypeParameter[]][] = [];
+  const types: Record<number, PortableType> = {};
+
+  for (let i = 0; i < portable.length; i++) {
+    const type = portable[i];
+    const extracted = extractName(portable, portable[i]);
+
+    if (extracted) {
+      nameInfo.push(extracted);
+    }
+
+    types[type.id.toNumber()] = type;
+  }
+
+  const dedup = removeDuplicateNames(lookup, nameInfo);
   const lookups: Record<string, string> = {};
+  const names: Record<number, string> = {};
+  const params: Record<string, SiTypeParameter[]> = {};
 
   for (let i = 0; i < dedup.length; i++) {
-    const [lookupIndex, name] = dedup[i];
+    const [lookupIndex, name, p] = dedup[i];
 
     names[lookupIndex] = name;
     lookups[name] = lookup.registry.createLookupType(lookupIndex);
+    params[name] = p;
   }
 
-  lookup.registry.register(lookups);
-
-  return names;
-}
-
-// types have an id, which means they are to be named by
-// the specified id - ensure we have a mapping lookup for these
-function extractTypeMap (types: PortableType[]): Record<number, PortableType> {
-  const result: Record<number, PortableType> = {};
-
-  for (let i = 0; i < types.length; i++) {
-    const p = types[i];
-
-    result[p.id.toNumber()] = p;
-  }
-
-  return result;
+  return [types, lookups, names, params];
 }
 
 export class PortableRegistry extends Struct {
@@ -266,8 +323,12 @@ export class PortableRegistry extends Struct {
       types: 'Vec<PortableType>'
     }, value);
 
-    this.#names = extractNames(this, this.types);
-    this.#types = extractTypeMap(this.types);
+    const [types, lookups, names, params] = extractTypeInfo(this, this.types);
+
+    this.#names = names;
+    this.#types = types;
+
+    registerTypes(this, lookups, names, params);
 
     // console.timeEnd('PortableRegistry')
   }
@@ -378,11 +439,11 @@ export class PortableRegistry extends Struct {
   #extract (type: SiType, lookupIndex: number): TypeDef {
     const namespace = [...type.path].join('::');
     let typeDef: TypeDef;
-    const primType = getPrimitivePath(type.path);
+    const aliasType = getAliasPath(type.path);
 
     try {
-      if (primType) {
-        typeDef = this.#extractPrimitivePath(lookupIndex, primType);
+      if (aliasType) {
+        typeDef = this.#extractAliasPath(lookupIndex, aliasType);
       } else if (type.def.isArray) {
         typeDef = this.#extractArray(lookupIndex, type.def.asArray);
       } else if (type.def.isBitSequence) {
@@ -624,7 +685,7 @@ export class PortableRegistry extends Struct {
     };
   }
 
-  #extractPrimitivePath (_: number, type: string): TypeDef {
+  #extractAliasPath (_: number, type: string): TypeDef {
     return {
       info: TypeDefInfo.Plain,
       type

packages/types/src/packageInfo.ts

@@ -3,4 +3,4 @@
 
 // Auto-generated by @polkadot/dev, do not edit
 
-export const packageInfo = { name: '@polkadot/types', version: '6.7.1' };
+export const packageInfo = { name: '@polkadot/types', version: '6.8.1' };

yarn.lock

@@ -1845,40 +1845,40 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.16.0
-    "@polkadot/api": 6.7.1
-    "@polkadot/types": 6.7.1
+    "@polkadot/api": 6.8.1
+    "@polkadot/types": 6.8.1
     "@polkadot/util": ^7.8.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@6.7.1, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@6.8.1, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.16.0
-    "@polkadot/api": 6.7.1
+    "@polkadot/api": 6.8.1
     "@polkadot/keyring": ^7.8.2
-    "@polkadot/rpc-core": 6.7.1
-    "@polkadot/rpc-provider": 6.7.1
-    "@polkadot/types": 6.7.1
+    "@polkadot/rpc-core": 6.8.1
+    "@polkadot/rpc-provider": 6.8.1
+    "@polkadot/types": 6.8.1
     "@polkadot/util": ^7.8.2
     "@polkadot/util-crypto": ^7.8.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@6.7.1, @polkadot/api@workspace:packages/api":
+"@polkadot/api@6.8.1, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.16.0
-    "@polkadot/api-derive": 6.7.1
+    "@polkadot/api-derive": 6.8.1
     "@polkadot/keyring": ^7.8.2
-    "@polkadot/rpc-core": 6.7.1
-    "@polkadot/rpc-provider": 6.7.1
-    "@polkadot/types": 6.7.1
-    "@polkadot/types-known": 6.7.1
+    "@polkadot/rpc-core": 6.8.1
+    "@polkadot/rpc-provider": 6.8.1
+    "@polkadot/types": 6.8.1
+    "@polkadot/types-known": 6.8.1
     "@polkadot/util": ^7.8.2
     "@polkadot/util-crypto": ^7.8.2
     eventemitter3: ^4.0.7
@@ -2000,26 +2000,26 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/rpc-core@6.7.1, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@6.8.1, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.16.0
     "@polkadot/keyring": ^7.8.2
-    "@polkadot/rpc-provider": 6.7.1
-    "@polkadot/types": 6.7.1
+    "@polkadot/rpc-provider": 6.8.1
+    "@polkadot/types": 6.8.1
     "@polkadot/util": ^7.8.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@6.7.1, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@6.8.1, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.16.0
     "@polkadot/keyring": ^7.8.2
-    "@polkadot/types": 6.7.1
+    "@polkadot/types": 6.8.1
     "@polkadot/util": ^7.8.2
     "@polkadot/util-crypto": ^7.8.2
     "@polkadot/x-fetch": ^7.8.2
@@ -2047,10 +2047,10 @@ __metadata:
     "@babel/core": ^7.16.0
     "@babel/register": ^7.16.0
     "@babel/runtime": ^7.16.0
-    "@polkadot/api": 6.7.1
-    "@polkadot/rpc-provider": 6.7.1
-    "@polkadot/types": 6.7.1
-    "@polkadot/types-support": 6.7.1
+    "@polkadot/api": 6.8.1
+    "@polkadot/rpc-provider": 6.8.1
+    "@polkadot/types": 6.8.1
+    "@polkadot/types-support": 6.8.1
     "@polkadot/util": ^7.8.2
     "@types/websocket": ^1.0.4
     "@types/yargs": ^17.0.5
@@ -2066,18 +2066,18 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-known@6.7.1, @polkadot/types-known@workspace:packages/types-known":
+"@polkadot/types-known@6.8.1, @polkadot/types-known@workspace:packages/types-known":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.16.0
     "@polkadot/networks": ^7.8.2
-    "@polkadot/types": 6.7.1
+    "@polkadot/types": 6.8.1
     "@polkadot/util": ^7.8.2
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-support@6.7.1, @polkadot/types-support@workspace:packages/types-support":
+"@polkadot/types-support@6.8.1, @polkadot/types-support@workspace:packages/types-support":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-support@workspace:packages/types-support"
   dependencies:
@@ -2086,13 +2086,13 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@6.7.1, @polkadot/types@workspace:packages/types":
+"@polkadot/types@6.8.1, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.16.0
     "@polkadot/keyring": ^7.8.2
-    "@polkadot/types-support": 6.7.1
+    "@polkadot/types-support": 6.8.1
     "@polkadot/util": ^7.8.2
     "@polkadot/util-crypto": ^7.8.2
     "@types/bn.js": ^4.11.6