Allow conversion of v15 metadata (#5631)

* Allow conversion of v15 metadata

* Don't output toCallsOnly in latest known

* Adjust asV* inside metadata conversions

* typo

* CHANGELOG

* CHANGELOG

CHANGELOG.md

@@ -2,9 +2,15 @@
 
 ## master
 
+Contributed:
+
+- Extract runtime details for custom documentation (Thanks to https://github.com/FlorianFranzen)
+
 Changes:
 
 - Apply historic `Scheduled` types for Kusama (as reported, non-comprehensive)
+- Adjust Deno types inside `WsProvider`
+- Allow parsing of (experimental) metadata v15
 
 
 ## 10.5.1 Apr 29, 2023

packages/types-augment/src/registry/interfaces.ts

@@ -41,7 +41,7 @@ import type { AuthorityIndex, AuthorityList, AuthoritySet, AuthoritySetChange, A
 import type { IdentityFields, IdentityInfo, IdentityInfoAdditional, IdentityInfoTo198, IdentityJudgement, RegistrarIndex, RegistrarInfo, Registration, RegistrationJudgement, RegistrationTo198 } from '@polkadot/types/interfaces/identity';
 import type { AuthIndex, AuthoritySignature, Heartbeat, HeartbeatTo244, OpaqueMultiaddr, OpaqueNetworkState, OpaquePeerId } from '@polkadot/types/interfaces/imOnline';
 import type { CallIndex, LotteryConfig } from '@polkadot/types/interfaces/lottery';
-import type { ErrorMetadataLatest, ErrorMetadataV10, ErrorMetadataV11, ErrorMetadataV12, ErrorMetadataV13, ErrorMetadataV14, ErrorMetadataV9, EventMetadataLatest, EventMetadataV10, EventMetadataV11, EventMetadataV12, EventMetadataV13, EventMetadataV14, EventMetadataV9, ExtrinsicMetadataLatest, ExtrinsicMetadataV11, ExtrinsicMetadataV12, ExtrinsicMetadataV13, ExtrinsicMetadataV14, FunctionArgumentMetadataLatest, FunctionArgumentMetadataV10, FunctionArgumentMetadataV11, FunctionArgumentMetadataV12, FunctionArgumentMetadataV13, FunctionArgumentMetadataV14, FunctionArgumentMetadataV9, FunctionMetadataLatest, FunctionMetadataV10, FunctionMetadataV11, FunctionMetadataV12, FunctionMetadataV13, FunctionMetadataV14, FunctionMetadataV9, MetadataAll, MetadataLatest, MetadataV10, MetadataV11, MetadataV12, MetadataV13, MetadataV14, MetadataV9, ModuleConstantMetadataV10, ModuleConstantMetadataV11, ModuleConstantMetadataV12, ModuleConstantMetadataV13, ModuleConstantMetadataV9, ModuleMetadataV10, ModuleMetadataV11, ModuleMetadataV12, ModuleMetadataV13, ModuleMetadataV9, OpaqueMetadata, PalletCallMetadataLatest, PalletCallMetadataV14, PalletConstantMetadataLatest, PalletConstantMetadataV14, PalletErrorMetadataLatest, PalletErrorMetadataV14, PalletEventMetadataLatest, PalletEventMetadataV14, PalletMetadataLatest, PalletMetadataV14, PalletStorageMetadataLatest, PalletStorageMetadataV14, PortableType, PortableTypeV14, SignedExtensionMetadataLatest, SignedExtensionMetadataV14, StorageEntryMetadataLatest, StorageEntryMetadataV10, StorageEntryMetadataV11, StorageEntryMetadataV12, StorageEntryMetadataV13, StorageEntryMetadataV14, StorageEntryMetadataV9, StorageEntryModifierLatest, StorageEntryModifierV10, StorageEntryModifierV11, StorageEntryModifierV12, StorageEntryModifierV13, StorageEntryModifierV14, StorageEntryModifierV9, StorageEntryTypeLatest, StorageEntryTypeV10, StorageEntryTypeV11, StorageEntryTypeV12, StorageEntryTypeV13, StorageEntryTypeV14, StorageEntryTypeV9, StorageHasher, StorageHasherV10, StorageHasherV11, StorageHasherV12, StorageHasherV13, StorageHasherV14, StorageHasherV9, StorageMetadataV10, StorageMetadataV11, StorageMetadataV12, StorageMetadataV13, StorageMetadataV9 } from '@polkadot/types/interfaces/metadata';
+import type { ErrorMetadataLatest, ErrorMetadataV10, ErrorMetadataV11, ErrorMetadataV12, ErrorMetadataV13, ErrorMetadataV14, ErrorMetadataV9, EventMetadataLatest, EventMetadataV10, EventMetadataV11, EventMetadataV12, EventMetadataV13, EventMetadataV14, EventMetadataV9, ExtrinsicMetadataLatest, ExtrinsicMetadataV11, ExtrinsicMetadataV12, ExtrinsicMetadataV13, ExtrinsicMetadataV14, FunctionArgumentMetadataLatest, FunctionArgumentMetadataV10, FunctionArgumentMetadataV11, FunctionArgumentMetadataV12, FunctionArgumentMetadataV13, FunctionArgumentMetadataV14, FunctionArgumentMetadataV9, FunctionMetadataLatest, FunctionMetadataV10, FunctionMetadataV11, FunctionMetadataV12, FunctionMetadataV13, FunctionMetadataV14, FunctionMetadataV9, MetadataAll, MetadataLatest, MetadataV10, MetadataV11, MetadataV12, MetadataV13, MetadataV14, MetadataV15, MetadataV9, ModuleConstantMetadataV10, ModuleConstantMetadataV11, ModuleConstantMetadataV12, ModuleConstantMetadataV13, ModuleConstantMetadataV9, ModuleMetadataV10, ModuleMetadataV11, ModuleMetadataV12, ModuleMetadataV13, ModuleMetadataV9, OpaqueMetadata, PalletCallMetadataLatest, PalletCallMetadataV14, PalletConstantMetadataLatest, PalletConstantMetadataV14, PalletErrorMetadataLatest, PalletErrorMetadataV14, PalletEventMetadataLatest, PalletEventMetadataV14, PalletMetadataLatest, PalletMetadataV14, PalletMetadataV15, PalletStorageMetadataLatest, PalletStorageMetadataV14, PortableType, PortableTypeV14, RuntimeApiMetadataLatest, RuntimeApiMetadataV15, RuntimeApiMethodMetadataV15, RuntimeApiMethodParamMetadataV15, SignedExtensionMetadataLatest, SignedExtensionMetadataV14, StorageEntryMetadataLatest, StorageEntryMetadataV10, StorageEntryMetadataV11, StorageEntryMetadataV12, StorageEntryMetadataV13, StorageEntryMetadataV14, StorageEntryMetadataV9, StorageEntryModifierLatest, StorageEntryModifierV10, StorageEntryModifierV11, StorageEntryModifierV12, StorageEntryModifierV13, StorageEntryModifierV14, StorageEntryModifierV9, StorageEntryTypeLatest, StorageEntryTypeV10, StorageEntryTypeV11, StorageEntryTypeV12, StorageEntryTypeV13, StorageEntryTypeV14, StorageEntryTypeV9, StorageHasher, StorageHasherV10, StorageHasherV11, StorageHasherV12, StorageHasherV13, StorageHasherV14, StorageHasherV9, StorageMetadataV10, StorageMetadataV11, StorageMetadataV12, StorageMetadataV13, StorageMetadataV9 } from '@polkadot/types/interfaces/metadata';
 import type { MmrBatchProof, MmrEncodableOpaqueLeaf, MmrError, MmrHash, MmrLeafBatchProof, MmrLeafIndex, MmrLeafProof, MmrNodeIndex, MmrProof } from '@polkadot/types/interfaces/mmr';
 import type { NftCollectionId, NftItemId } from '@polkadot/types/interfaces/nfts';
 import type { NpApiError, NpPoolId } from '@polkadot/types/interfaces/nompools';
@@ -648,6 +648,7 @@ declare module '@polkadot/types/types/registry' {
     MetadataV12: MetadataV12;
     MetadataV13: MetadataV13;
     MetadataV14: MetadataV14;
+    MetadataV15: MetadataV15;
     MetadataV9: MetadataV9;
     MigrationStatusResult: MigrationStatusResult;
     MmrBatchProof: MmrBatchProof;
@@ -759,6 +760,7 @@ declare module '@polkadot/types/types/registry' {
     PalletId: PalletId;
     PalletMetadataLatest: PalletMetadataLatest;
     PalletMetadataV14: PalletMetadataV14;
+    PalletMetadataV15: PalletMetadataV15;
     PalletsOrigin: PalletsOrigin;
     PalletStorageMetadataLatest: PalletStorageMetadataLatest;
     PalletStorageMetadataV14: PalletStorageMetadataV14;
@@ -891,6 +893,10 @@ declare module '@polkadot/types/types/registry' {
     RoundSnapshot: RoundSnapshot;
     RoundState: RoundState;
     RpcMethods: RpcMethods;
+    RuntimeApiMetadataLatest: RuntimeApiMetadataLatest;
+    RuntimeApiMetadataV15: RuntimeApiMetadataV15;
+    RuntimeApiMethodMetadataV15: RuntimeApiMethodMetadataV15;
+    RuntimeApiMethodParamMetadataV15: RuntimeApiMethodParamMetadataV15;
     RuntimeCall: RuntimeCall;
     RuntimeDbWeight: RuntimeDbWeight;
     RuntimeDispatchInfo: RuntimeDispatchInfo;

packages/types/src/interfaces/metadata/definitions.ts

@@ -14,6 +14,7 @@ import { v11 } from './v11.js';
 import { v12 } from './v12.js';
 import { v13 } from './v13.js';
 import { v14 } from './v14.js';
+import { v15 } from './v15.js';
 
 export { AllHashers };
 
@@ -21,26 +22,32 @@ export default {
   rpc: {},
   runtime,
   types: {
+    // all known
     ...v9,
     ...v10,
     ...v11,
     ...v12,
     ...v13,
     ...v14,
+    ...v15,
+
     // latest mappings
+    // NOTE: For v15, we only added the runtime defintions,
+    // hence latest for most pointing to the previous V14
     ErrorMetadataLatest: 'ErrorMetadataV14',
     EventMetadataLatest: 'EventMetadataV14',
     ExtrinsicMetadataLatest: 'ExtrinsicMetadataV14',
     FunctionArgumentMetadataLatest: 'FunctionArgumentMetadataV14',
     FunctionMetadataLatest: 'FunctionMetadataV14',
-    MetadataLatest: 'MetadataV14',
+    MetadataLatest: 'MetadataV15',
     PalletCallMetadataLatest: 'PalletCallMetadataV14',
     PalletConstantMetadataLatest: 'PalletConstantMetadataV14',
     PalletErrorMetadataLatest: 'PalletErrorMetadataV14',
     PalletEventMetadataLatest: 'PalletEventMetadataV14',
-    PalletMetadataLatest: 'PalletMetadataV14',
+    PalletMetadataLatest: 'PalletMetadataV15',
     PalletStorageMetadataLatest: 'PalletStorageMetadataV14',
     PortableType: 'PortableTypeV14',
+    RuntimeApiMetadataLatest: 'RuntimeApiMetadataV15',
     SignedExtensionMetadataLatest: 'SignedExtensionMetadataV14',
     StorageEntryMetadataLatest: 'StorageEntryMetadataV14',
     StorageEntryModifierLatest: 'StorageEntryModifierV14',
@@ -68,7 +75,8 @@ export default {
         V11: 'MetadataV11',
         V12: 'MetadataV12',
         V13: 'MetadataV13',
-        V14: 'MetadataV14'
+        V14: 'MetadataV14',
+        V15: 'MetadataV15'
       }
     }
   }

packages/types/src/interfaces/metadata/types.ts

@@ -161,11 +161,13 @@ export interface MetadataAll extends Enum {
   readonly asV13: MetadataV13;
   readonly isV14: boolean;
   readonly asV14: MetadataV14;
-  readonly type: 'V0' | 'V1' | 'V2' | 'V3' | 'V4' | 'V5' | 'V6' | 'V7' | 'V8' | 'V9' | 'V10' | 'V11' | 'V12' | 'V13' | 'V14';
+  readonly isV15: boolean;
+  readonly asV15: MetadataV15;
+  readonly type: 'V0' | 'V1' | 'V2' | 'V3' | 'V4' | 'V5' | 'V6' | 'V7' | 'V8' | 'V9' | 'V10' | 'V11' | 'V12' | 'V13' | 'V14' | 'V15';
 }
 
 /** @name MetadataLatest */
-export interface MetadataLatest extends MetadataV14 {}
+export interface MetadataLatest extends MetadataV15 {}
 
 /** @name MetadataV10 */
 export interface MetadataV10 extends Struct {
@@ -198,6 +200,15 @@ export interface MetadataV14 extends Struct {
   readonly type: SiLookupTypeId;
 }
 
+/** @name MetadataV15 */
+export interface MetadataV15 extends Struct {
+  readonly lookup: PortableRegistry;
+  readonly pallets: Vec<PalletMetadataV15>;
+  readonly extrinsic: ExtrinsicMetadataV14;
+  readonly type: SiLookupTypeId;
+  readonly apis: Vec<RuntimeApiMetadataV15>;
+}
+
 /** @name MetadataV9 */
 export interface MetadataV9 extends Struct {
   readonly modules: Vec<ModuleMetadataV9>;
@@ -314,7 +325,7 @@ export interface PalletEventMetadataV14 extends Struct {
 }
 
 /** @name PalletMetadataLatest */
-export interface PalletMetadataLatest extends PalletMetadataV14 {}
+export interface PalletMetadataLatest extends PalletMetadataV15 {}
 
 /** @name PalletMetadataV14 */
 export interface PalletMetadataV14 extends Struct {
@@ -327,6 +338,18 @@ export interface PalletMetadataV14 extends Struct {
   readonly index: u8;
 }
 
+/** @name PalletMetadataV15 */
+export interface PalletMetadataV15 extends Struct {
+  readonly name: Text;
+  readonly storage: Option<PalletStorageMetadataV14>;
+  readonly calls: Option<PalletCallMetadataV14>;
+  readonly events: Option<PalletEventMetadataV14>;
+  readonly constants: Vec<PalletConstantMetadataV14>;
+  readonly errors: Option<PalletErrorMetadataV14>;
+  readonly index: u8;
+  readonly docs: Vec<Text>;
+}
+
 /** @name PalletStorageMetadataLatest */
 export interface PalletStorageMetadataLatest extends PalletStorageMetadataV14 {}
 
@@ -345,6 +368,30 @@ export interface PortableTypeV14 extends Struct {
   readonly type: Si1Type;
 }
 
+/** @name RuntimeApiMetadataLatest */
+export interface RuntimeApiMetadataLatest extends RuntimeApiMetadataV15 {}
+
+/** @name RuntimeApiMetadataV15 */
+export interface RuntimeApiMetadataV15 extends Struct {
+  readonly name: Text;
+  readonly methods: Vec<RuntimeApiMethodMetadataV15>;
+  readonly docs: Vec<Text>;
+}
+
+/** @name RuntimeApiMethodMetadataV15 */
+export interface RuntimeApiMethodMetadataV15 extends Struct {
+  readonly name: Text;
+  readonly inputs: Vec<RuntimeApiMethodParamMetadataV15>;
+  readonly output: SiLookupTypeId;
+  readonly docs: Vec<Text>;
+}
+
+/** @name RuntimeApiMethodParamMetadataV15 */
+export interface RuntimeApiMethodParamMetadataV15 extends Struct {
+  readonly name: Text;
+  readonly type: SiLookupTypeId;
+}
+
 /** @name SignedExtensionMetadataLatest */
 export interface SignedExtensionMetadataLatest extends SignedExtensionMetadataV14 {}
 

packages/types/src/interfaces/metadata/v15.ts

@@ -0,0 +1,45 @@
+// Copyright 2017-2023 @polkadot/types authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// order important in structs... :)
+/* eslint-disable sort-keys */
+
+import type { DefinitionsTypes } from '../../types/index.js';
+
+export const v15: DefinitionsTypes = {
+  // new/adjusted in v15
+  PalletMetadataV15: {
+    name: 'Text',
+    storage: 'Option<PalletStorageMetadataV14>',
+    calls: 'Option<PalletCallMetadataV14>',
+    events: 'Option<PalletEventMetadataV14>',
+    constants: 'Vec<PalletConstantMetadataV14>',
+    errors: 'Option<PalletErrorMetadataV14>',
+    index: 'u8',
+    docs: 'Vec<Text>'
+  },
+  RuntimeApiMetadataV15: {
+    name: 'Text',
+    methods: 'Vec<RuntimeApiMethodMetadataV15>',
+    docs: 'Vec<Text>'
+  },
+  RuntimeApiMethodMetadataV15: {
+    name: 'Text',
+    inputs: 'Vec<RuntimeApiMethodParamMetadataV15>',
+    output: 'SiLookupTypeId',
+    docs: 'Vec<Text>'
+  },
+  RuntimeApiMethodParamMetadataV15: {
+    name: 'Text',
+    type: 'SiLookupTypeId'
+  },
+
+  // actual v15 definition
+  MetadataV15: {
+    lookup: 'PortableRegistry',
+    pallets: 'Vec<PalletMetadataV15>',
+    extrinsic: 'ExtrinsicMetadataV14',
+    type: 'SiLookupTypeId',
+    apis: 'Vec<RuntimeApiMetadataV15>'
+  }
+};

packages/types/src/metadata/Metadata.spec.ts

@@ -29,9 +29,17 @@ for (const type of ['kusama', 'polkadot', 'substrate'] as const) {
     });
 
     it('has a sane toCallsOnly', (): void => {
+      const test = metadata.asCallsOnly;
+
+      // it has a useful length
       expect(
-        metadata.asCallsOnly.toU8a().length > 65536
+        test.toU8a().length > 65536
       ).toBe(true);
+
+      // it sets it to the correct version
+      expect(
+        test.version
+      ).toEqual(14);
     });
   });
 }

packages/types/src/metadata/Metadata.ts

@@ -26,8 +26,6 @@ function decodeU8a (registry: Registry, u8a: Uint8Array): MetadataVersioned | Ui
       return new MetadataVersioned(registry, u8a);
     } catch {
       u8a[VERSION_IDX] = 10;
-
-      return u8a;
     }
   }
 

packages/types/src/metadata/MetadataVersioned.ts

@@ -3,7 +3,7 @@
 
 import type { AnyJson } from '@polkadot/types-codec/types';
 import type { HexString } from '@polkadot/util/types';
-import type { MetadataAll, MetadataLatest, MetadataV9, MetadataV10, MetadataV11, MetadataV12, MetadataV13, MetadataV14 } from '../interfaces/metadata/index.js';
+import type { MetadataAll, MetadataLatest, MetadataV9, MetadataV10, MetadataV11, MetadataV12, MetadataV13, MetadataV14, MetadataV15 } from '../interfaces/metadata/index.js';
 import type { Registry } from '../types/index.js';
 
 import { Struct } from '@polkadot/types-codec';
@@ -14,18 +14,26 @@ import { toV11 } from './v10/toV11.js';
 import { toV12 } from './v11/toV12.js';
 import { toV13 } from './v12/toV13.js';
 import { toV14 } from './v13/toV14.js';
-import { toLatest } from './v14/toLatest.js';
+import { toV15 } from './v14/toV15.js';
+import { toLatest } from './v15/toLatest.js';
 import { MagicNumber } from './MagicNumber.js';
 
 // Use these to generate all the Meta* types below via template keys
 // NOTE: Keep from latest -> earliest, see the LATEST_VERSION 0 index
-const KNOWN_VERSIONS = [14, 13, 12, 11, 10, 9] as const;
+const KNOWN_VERSIONS = [15, 14, 13, 12, 11, 10, 9] as const;
 const LATEST_VERSION = KNOWN_VERSIONS[0];
 
+// This is part of migration. The toCallsOnly would be usede for esxtensions,
+// i.e. they need to be updated. To ensure that they are passed a known version
+// we actually set this to a known-working version
+//
+// NOTE: This would only work on compatible types, i.e. v14 & v15 comply
+const TO_CALLS_VERSION = 14; // LATEST_VERSION;
+
 type MetaAll = typeof KNOWN_VERSIONS[number];
 type MetaAsX = `asV${MetaAll}`;
 type MetaMapped = MetadataAll[MetaAsX];
-type MetaVersions = MetaAll | 'latest';
+type MetaVersions = Exclude<MetaAll, 9> | 'latest';
 
 /**
  * @name MetadataVersioned
@@ -55,16 +63,17 @@ export class MetadataVersioned extends Struct {
   };
 
   #getVersion = <T extends MetaMapped, F extends MetaMapped>(version: MetaVersions, fromPrev: (registry: Registry, input: F, metaVersion: number) => T): T => {
-    const asCurr = `asV${version}` as MetaAsX;
-    const asPrev = version === 'latest'
-      ? `asV${LATEST_VERSION}` as MetaAsX
-      : `asV${version - 1}` as MetaAsX;
-
     if (version !== 'latest' && this.#assertVersion(version)) {
+      const asCurr: MetaAsX = `asV${version}`;
+
       return this.#metadata()[asCurr] as T;
     }
 
     if (!this.#converted.has(version)) {
+      const asPrev: MetaAsX = version === 'latest'
+        ? `asV${LATEST_VERSION}`
+        : `asV${(version - 1) as MetaAll}`;
+
       this.#converted.set(version, fromPrev(this.registry, this[asPrev] as F, this.version));
     }
 
@@ -84,7 +93,7 @@ export class MetadataVersioned extends Struct {
   public get asCallsOnly (): MetadataVersioned {
     return new MetadataVersioned(this.registry, {
       magicNumber: this.magicNumber,
-      metadata: this.registry.createTypeUnsafe('MetadataAll', [toCallsOnly(this.registry, this.asLatest), LATEST_VERSION])
+      metadata: this.registry.createTypeUnsafe('MetadataAll', [toCallsOnly(this.registry, this.asLatest), TO_CALLS_VERSION])
     });
   }
 
@@ -132,6 +141,13 @@ export class MetadataVersioned extends Struct {
     return this.#getVersion(14, toV14);
   }
 
+  /**
+   * @description Returns the wrapped values as a V14 object
+   */
+  public get asV15 (): MetadataV15 {
+    return this.#getVersion(15, toV15);
+  }
+
   /**
    * @description Returns the wrapped values as a latest version object
    */

packages/types/src/metadata/v12/toV13.ts

@@ -7,6 +7,6 @@ import type { MetadataV12, MetadataV13 } from '../../interfaces/metadata/index.j
 /**
  * @internal
  **/
-export function toV13 (registry: Registry, metadata: MetadataV12): MetadataV13 {
-  return registry.createTypeUnsafe('MetadataV13', [metadata]);
+export function toV13 (registry: Registry, v12: MetadataV12): MetadataV13 {
+  return registry.createTypeUnsafe('MetadataV13', [v12]);
 }

packages/types/src/metadata/v14/toV15.ts

@@ -0,0 +1,20 @@
+// Copyright 2017-2023 @polkadot/types authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { MetadataV14, MetadataV15 } from '../../interfaces/metadata/index.js';
+import type { Registry } from '../../types/index.js';
+
+/**
+ * Convert the Metadata to v15
+ * @internal
+ **/
+export function toV15 (registry: Registry, v14: MetadataV14, _: number): MetadataV15 {
+  // V15 is mostly equivalent to v14 however it does add
+  //
+  // 1. The top-level apis entry - it is assumed that in usage we would
+  //    just check for all-empty (like this would construct)
+  // 2. A docs param on the pallet itself
+  //
+  // A straight conversion with createTypeUndafe magic fills in details
+  return registry.createTypeUnsafe('MetadataV15', [v14]);
+}

packages/types/src/metadata/v15/Metadata.spec.ts

@@ -0,0 +1,12 @@
+// Copyright 2017-2023 @polkadot/types authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import substrateData from '@polkadot/types-support/metadata/v15/substrate-hex';
+
+import { testMeta } from '../util/testUtil.js';
+
+testMeta(15, {
+  substrate: {
+    data: substrateData
+  }
+});

packages/types/src/metadata/v15/toLatest.ts

@@ -2,12 +2,12 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Registry } from '@polkadot/types-codec/types';
-import type { MetadataLatest, MetadataV14 } from '../../interfaces/metadata/index.js';
+import type { MetadataLatest, MetadataV15 } from '../../interfaces/metadata/index.js';
 
 /**
  * Convert the Metadata (which is an alias) to latest
  * @internal
  **/
-export function toLatest (_registry: Registry, v14: MetadataV14, _metaVersion: number): MetadataLatest {
-  return v14;
+export function toLatest (_registry: Registry, v15: MetadataV15, _metaVersion: number): MetadataLatest {
+  return v15;
 }