Metadata v7 (#1182)

* Make a start... static is in, code copied as a start.

* Get exports (more-or-less) right

* Well, the v7/* tests pass... now just to tweak storage generation

* Linting is happy, it doesn't mean it will work...

* It compiles... ship it.

packages/api-metadata/src/consts/fromMetadata/index.ts

@@ -14,7 +14,7 @@ import { stringCamelCase } from '@polkadot/util';
  * @param metadata - The metadata
  */
 export default function fromMetadata (metadata: Metadata): Constants {
-  return metadata.asV6.modules.reduce((result, moduleMetadata): Constants => {
+  return metadata.asV7.modules.reduce((result, moduleMetadata): Constants => {
     if (moduleMetadata.constants.isEmpty) {
       return result;
     }

packages/api-metadata/src/consts/types.ts

@@ -3,10 +3,10 @@
 // of the Apache-2.0 license. See the LICENSE file for details.
 
 import { Codec } from '@polkadot/types/types';
-import { ModuleConstantMetadata as MetaV6 } from '@polkadot/types/Metadata/v6/Constants';
+import { ModuleConstantMetadata as MetaV7 } from '@polkadot/types/Metadata/v6/Constants';
 
 export interface ConstantCodec extends Codec {
-  meta: MetaV6;
+  meta: MetaV7;
 }
 
 export type ModuleConstants = Record<string, Codec>;

packages/api-metadata/src/extrinsics/fromMetadata/fromMetadata.spec.ts

@@ -3,13 +3,13 @@
 // of the Apache-2.0 license. See the LICENSE file for details.
 
 import { Extrinsic, Metadata } from '@polkadot/types';
-import json from '@polkadot/types/Metadata/v6/static';
+import json from '@polkadot/types/Metadata/v7/static';
 
-import fromV6 from '.';
+import fromMetadata from '.';
 
 // Use the pre-generated metadata
 const metadata = new Metadata(json);
-const newExtrinsics = fromV6(metadata);
+const newExtrinsics = fromMetadata(metadata);
 
 describe('fromMetadata', (): void => {
   it('should throw if an incorrect number of args is supplied', (): void => {

packages/api-metadata/src/extrinsics/fromMetadata/index.ts

@@ -2,7 +2,7 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
 
-import { ModuleMetadata } from '@polkadot/types/Metadata/v6/Metadata';
+import { ModuleMetadata } from '@polkadot/types/Metadata/v7/Metadata';
 import { Methods, ModulesWithMethods } from '@polkadot/types/primitive/Method';
 import Metadata from '@polkadot/types/Metadata';
 import { stringCamelCase } from '@polkadot/util';
@@ -16,7 +16,7 @@ import createUnchecked from './createUnchecked';
  * @param metadata - The metadata
  */
 export default function fromMetadata (metadata: Metadata): ModulesWithMethods {
-  return metadata.asV6.modules
+  return metadata.asV7.modules
     .filter((modul): boolean => modul.calls.isSome)
     .reduce((result, modul: ModuleMetadata, sectionIndex): ModulesWithMethods => {
       const section = stringCamelCase(modul.name.toString());

packages/api-metadata/src/storage/fromMetadata/index.ts

@@ -16,22 +16,24 @@ import { storage } from './storage';
  * @param metadata - The metadata
  */
 export default function fromMetadata (metadata: Metadata): Storage {
-  return metadata.asV6.modules.reduce((result, moduleMetadata): Storage => {
+  return metadata.asV7.modules.reduce((result, moduleMetadata): Storage => {
     if (moduleMetadata.storage.isNone) {
       return result;
     }
 
-    const { name, prefix } = moduleMetadata;
+    const { name } = moduleMetadata;
     const section = stringCamelCase(name.toString());
+    const unwrapped = moduleMetadata.storage.unwrap();
+    const prefix = unwrapped.prefix.toString();
 
     // For access, we change the index names, i.e. Balances.FreeBalance -> balances.freeBalance
-    result[section] = moduleMetadata.storage.unwrap().reduce((newModule, meta): ModuleStorage => {
+    result[section] = unwrapped.items.reduce((newModule, meta): ModuleStorage => {
       const method = meta.name.toString();
 
       newModule[stringLowerFirst(method)] = createFunction({
         meta,
         method,
-        prefix: prefix.toString(),
+        prefix,
         section
       });