Auto-extract Meta* interface types based on version list (#5100)

* Auto-extract Meta* interface types based on version list

* Additional dedupe

* s/ALL_VERSIONS/KNOWN_VERSIONS/

* Restore type addition

* Additional <const> specifiers

* Handle contracts similar to metadata

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

@@ -8,7 +8,11 @@ import { v0ToV1 } from './toV1';
 import { v1ToV2 } from './toV2';
 import { v2ToV3 } from './toV3';
 
-type Versions = 'V3' | 'V2' | 'V1' | 'V0';
+// 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 = <const> ['V3', 'V2', 'V1'];
+
+type Versions = typeof enumVersions[number] | 'V0';
 
 type Converter = (registry: Registry, vx: any) => ContractMetadataLatest;
 
@@ -26,10 +30,6 @@ export const v2ToLatest = createConverter(v3ToLatest, v2ToV3);
 export const v1ToLatest = createConverter(v2ToLatest, v1ToV2);
 export const v0ToLatest = createConverter(v1ToLatest, v0ToV1);
 
-// 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 = ['V3', 'V2', 'V1'];
-
 export const convertVersions: [Versions, Converter][] = [
   ['V3', v3ToLatest],
   ['V2', v2ToLatest],

packages/api-contract/src/Abi/toV2.ts

@@ -23,7 +23,7 @@ interface ArgsEntry <T extends WithArgs> extends NamedEntry {
   args: GetArgsType<T>['args'][0][];
 }
 
-const ARG_TYPES = {
+const ARG_TYPES = <const> {
   ContractConstructorSpec: 'ContractMessageParamSpecV2',
   ContractEventSpec: 'ContractEventParamSpecV2',
   ContractMessageSpec: 'ContractMessageParamSpecV2'