Expose findCall/findError on api.at (#4027)

* Expose findCall/findError on api.at

* Move findError/findCall

packages/api/src/base/Decorate.ts

@@ -7,7 +7,7 @@ import type { Option, Raw, StorageKey, Text, u64 } from '@polkadot/types';
 import type { Call, Hash, RuntimeVersion } from '@polkadot/types/interfaces';
 import type { DecoratedMeta } from '@polkadot/types/metadata/decorate/types';
 import type { StorageEntry } from '@polkadot/types/primitive/types';
-import type { AnyFunction, AnyTuple, CallFunction, Codec, DefinitionRpc, DefinitionRpcSub, DetectCodec, IMethod, IStorageKey, Registry, RegistryTypes } from '@polkadot/types/types';
+import type { AnyFunction, AnyTuple, CallFunction, Codec, DefinitionRpc, DefinitionRpcSub, DetectCodec, IMethod, IStorageKey, Registry, RegistryError, RegistryTypes } from '@polkadot/types/types';
 import type { SubmittableExtrinsic } from '../submittable/types';
 import type { ApiDecoration, ApiInterfaceRx, ApiOptions, ApiTypes, DecoratedErrors, DecoratedEvents, DecoratedRpc, DecoratedRpcSection, DecorateMethod, PaginationOptions, QueryableConsts, QueryableModuleStorage, QueryableModuleStorageAt, QueryableStorage, QueryableStorageAt, QueryableStorageEntry, QueryableStorageEntryAt, QueryableStorageMulti, QueryableStorageMultiArg, SubmittableExtrinsicFunction, SubmittableExtrinsics, SubmittableModuleExtrinsics } from '../types';
 import type { VersionedRegistry } from './types';
@@ -18,7 +18,7 @@ import { decorateDerive, ExactDerive } from '@polkadot/api-derive';
 import { memo, RpcCore } from '@polkadot/rpc-core';
 import { WsProvider } from '@polkadot/rpc-provider';
 import { expandMetadata, Metadata, TypeRegistry, unwrapStorageType } from '@polkadot/types';
-import { arrayChunk, arrayFlatten, assert, BN, BN_ZERO, compactStripLength, logger, u8aToHex } from '@polkadot/util';
+import { arrayChunk, arrayFlatten, assert, BN, BN_ZERO, compactStripLength, logger, u8aToHex, u8aToU8a } from '@polkadot/util';
 
 import { createSubmittable } from '../submittable';
 import { augmentObject } from '../util/augmentObject';
@@ -172,6 +172,20 @@ export abstract class Decorate<ApiType extends ApiTypes> extends Events {
     return this.#registry.createType(type, ...params);
   }
 
+  /**
+   * @description Finds the definition for a specific [[CallFunction]] based on the index supplied
+   */
+  public findCall (callIndex: Uint8Array | string): CallFunction {
+    return this.registry.findMetaCall(u8aToU8a(callIndex));
+  }
+
+  /**
+   * @description Finds the definition for a specific [[RegistryError]] based on the index supplied
+   */
+  public findError (errorIndex: Uint8Array | string): RegistryError {
+    return this.registry.findMetaError(u8aToU8a(errorIndex));
+  }
+
   /**
    * @description Register additional user-defined of chain-specific types in the type registry
    */
@@ -226,6 +240,11 @@ export abstract class Decorate<ApiType extends ApiTypes> extends Events {
     augmentObject('query', storage, decoratedApi.query, fromEmpty);
     augmentObject('query', storageRx, decoratedApi.rx.query, fromEmpty);
 
+    decoratedApi.findCall = (callIndex: Uint8Array | string): CallFunction =>
+      registry.registry.findMetaCall(u8aToU8a(callIndex));
+    decoratedApi.findError = (errorIndex: Uint8Array | string): RegistryError =>
+      registry.registry.findMetaError(u8aToU8a(errorIndex));
+
     return {
       decoratedApi,
       decoratedMeta: registry.decoratedMeta

packages/api/src/base/index.ts

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 @polkadot/api authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import type { CallFunction, RegistryError, SignerPayloadRawBase } from '@polkadot/types/types';
+import type { SignerPayloadRawBase } from '@polkadot/types/types';
 import type { ApiOptions, ApiTypes, DecorateMethod, Signer } from '../types';
 
 import { assert, isString, u8aToHex, u8aToU8a } from '@polkadot/util';
@@ -55,20 +55,6 @@ export abstract class ApiBase<ApiType extends ApiTypes> extends Getters<ApiType>
     return this._rpcCore.disconnect();
   }
 
-  /**
-   * @description Finds the definition for a specific [[CallFunction]] based on the index supplied
-   */
-  public findCall (callIndex: Uint8Array | string): CallFunction {
-    return this.registry.findMetaCall(u8aToU8a(callIndex));
-  }
-
-  /**
-   * @description Finds the definition for a specific [[RegistryError]] based on the index supplied
-   */
-  public findError (errorIndex: Uint8Array | string): RegistryError {
-    return this.registry.findMetaError(u8aToU8a(errorIndex));
-  }
-
   /**
    * @description Set an external signer which will be used to sign extrinsic when account passed in is not KeyringPair
    */

packages/api/src/types/index.ts

@@ -11,7 +11,7 @@ import type { ProviderInterface, ProviderInterfaceEmitted } from '@polkadot/rpc-
 import type { ExtDef } from '@polkadot/types/extrinsic/signedExtensions/types';
 import type { Hash, RuntimeVersion } from '@polkadot/types/interfaces';
 import type { Metadata } from '@polkadot/types/metadata';
-import type { DefinitionRpc, DefinitionRpcSub, RegisteredTypes, Registry, SignatureOptions, Signer } from '@polkadot/types/types';
+import type { CallFunction, DefinitionRpc, DefinitionRpcSub, RegisteredTypes, Registry, RegistryError, SignatureOptions, Signer } from '@polkadot/types/types';
 import type { BN } from '@polkadot/util';
 import type { ApiBase } from '../base';
 import type { DeriveAllSections } from '../util/decorate';
@@ -118,4 +118,7 @@ export interface ApiDecoration<ApiType extends ApiTypes> {
   rx: {
     query: QueryableStorage<'rxjs'>;
   }
+
+  findCall (callIndex: Uint8Array | string): CallFunction;
+  findError (errorIndex: Uint8Array | string): RegistryError;
 }