adds toV5 boilerplate code draft

packages/api-contract/src/Abi/toLatest.ts

@@ -1,17 +1,18 @@
 // Copyright 2017-2024 @polkadot/api-contract authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import type { ContractMetadataLatest, ContractMetadataV4 } from '@polkadot/types/interfaces';
+import type { ContractMetadataLatest,  ContractMetadataV5 } from '@polkadot/types/interfaces';
 import type { Registry } from '@polkadot/types/types';
 
 import { v0ToV1 } from './toV1.js';
 import { v1ToV2 } from './toV2.js';
 import { v2ToV3 } from './toV3.js';
 import { v3ToV4 } from './toV4.js';
+import { v4ToV5 } from './toV5.js';
 
 // The versions where an enum is used, aka V0 is missing
 // (Order from newest, i.e. we expect more on newest vs oldest)
-export const enumVersions = ['V4', 'V3', 'V2', 'V1'] as const;
+export const enumVersions = ['V5', 'V4', 'V3', 'V2', 'V1'] as const;
 
 type Versions = typeof enumVersions[number] | 'V0';
 
@@ -23,16 +24,18 @@ function createConverter <I, O> (next: (registry: Registry, input: O) => Contrac
     next(registry, step(registry, input));
 }
 
-export function v4ToLatest (_registry: Registry, v4: ContractMetadataV4): ContractMetadataLatest {
-  return v4;
+export function v5ToLatest (_registry: Registry, v5: ContractMetadataV5): ContractMetadataLatest {
+  return v5;
 }
 
+export const v4ToLatest = /*#__PURE__*/ createConverter(v5ToLatest, v4ToV5);
 export const v3ToLatest = /*#__PURE__*/ createConverter(v4ToLatest, v3ToV4);
 export const v2ToLatest = /*#__PURE__*/ createConverter(v3ToLatest, v2ToV3);
 export const v1ToLatest = /*#__PURE__*/ createConverter(v2ToLatest, v1ToV2);
 export const v0ToLatest = /*#__PURE__*/ createConverter(v1ToLatest, v0ToV1);
 
 export const convertVersions: [Versions, Converter][] = [
+  ['V5', v5ToLatest],
   ['V4', v4ToLatest],
   ['V3', v3ToLatest],
   ['V2', v2ToLatest],

packages/api-contract/src/Abi/toV5.ts

@@ -0,0 +1,20 @@
+// Copyright 2017-2023 @polkadot/api-contract authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ContractMetadataV4, ContractMetadataV5 } from '@polkadot/types/interfaces';
+import type { Registry } from '@polkadot/types/types';
+
+import { objectSpread } from '@polkadot/util';
+
+export function v4ToV5 (registry: Registry, v4: ContractMetadataV4): ContractMetadataV5 {
+  return registry.createType('ContractMetadataV5', objectSpread({}, v4, {
+    spec: objectSpread({}, v4.spec, {
+      events: v4.spec.events.map((e) =>
+        registry.createType('ContractEventSpecV3', objectSpread({
+          module_path: 'todo::todo',
+          signature_topic: "0xDEADBEEF"
+        }, e))
+      )
+    })
+  }));
+}