Add state_getReadProof (#2196)

Author: jacogr

CHANGELOG.md

@@ -4,11 +4,13 @@
 - Allow user type augmentation to work with different versions of rxjs (Thanks to https://github.com/monitz87)
 - Align augmented generation with camelCase (Thanks to https://github.com/monitz87)
 - Fix bitfield endian encoding (Thanks to investigation by https://github.com/xlc)
+- Add account flag derives via `accounts.flags(accountId)` (Thanks to https://github.com/kwingram25)
 - Fix entries decoding for `Option<Number>` (& simplify, decoding correctly on rpc layer)
-- Add `rpc.system.{localPeerId, localListenAddresses}`
+- Add `system.{localPeerId, localListenAddresses}` & `state.getReadProof` RPCs
 - Ensure proper propagation of `api.runtimeVersion` (used for signing) after upgrade
 - Field ordering fix for deprecated `Linkage` (used in linked maps)
-- `derive.account.info` now returns all field types (not only raw)
+- `derive.account.info` now returns all field enum types decoded (not only raw)
+- Add banner with FAQ entries for node-template to aid with common issues
 - `Digest` has been moved to definitions, removal of `GenericDigest` type
 - Support `Fixed128` type
 - Add `transactionVersion` to `RuntimeVersion` struct

packages/api/src/base/Decorate.ts

@@ -235,7 +235,7 @@ export default abstract class Decorate<ApiType extends ApiTypes> extends Events
     const unknown = exposed.filter((key) => !allKeys.includes(key));
 
     if (unknown.length) {
-      l.warn(`RPC methods not decorated: ${unknown.join(', ')}}`);
+      l.warn(`RPC methods not decorated: ${unknown.join(', ')}`);
     }
 
     // loop through all entries we have (populated in decorate) and filter as required

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

@@ -297,6 +297,21 @@ export default {
       ],
       type: 'Vec<StorageChangeSet>'
     },
+    getReadProof: {
+      description: 'Returns proof of storage entries at a specific block state',
+      params: [
+        {
+          name: 'keys',
+          type: 'Vec<StorageKey>'
+        },
+        {
+          name: 'at',
+          type: 'BlockHash',
+          isOptional: true
+        }
+      ],
+      type: 'ReadProof'
+    },
     subscribeRuntimeVersion: {
       alias: ['chain_subscribeRuntimeVersion', 'chain_unsubscribeRuntimeVersion'],
       description: 'Retrieves the runtime version via subscription',
@@ -327,6 +342,10 @@ export default {
   types: {
     ApiId: '[u8; 8]',
     KeyValueOption: '(StorageKey, Option<StorageData>)',
+    ReadProof: {
+      at: 'Hash',
+      proof: 'Vec<Bytes>'
+    },
     RuntimeVersionApi: '(ApiId, u32)',
     RuntimeVersion: {
       specName: 'Text',