Make api.const.*.* typed (#1584)

* Make api.const.*.* typed

* Fix tsc errors

* Remove ConstantCodec

* as any as

* Remove as any

packages/metadata/src/Decorated/consts/fromMetadata/index.ts

@@ -34,8 +34,8 @@ export default function fromMetadata (metadata: Metadata): Constants {
       newModule[stringCamelCase(meta.name.toString())] = codec;
 
       return newModule;
-    }, {});
+    }, {} as ModuleConstants);
 
     return result;
-  }, {});
+  }, {} as Constants);
 }

packages/metadata/src/Decorated/types.ts

@@ -12,7 +12,9 @@ export interface ConstantCodec extends Codec {
 
 export type ModuleConstants = Record<string, Codec>;
 
-export type Constants = Record<string, ModuleConstants>;
+export interface Constants {
+  [index: string]: ModuleConstants;
+}
 
 export interface ModuleStorage {
   [key: string]: StorageEntry;