Type for contract call params (#2452)

Author: kwingram25

packages/api-contract/src/base/Contract.ts

@@ -4,7 +4,7 @@
 
 import { ApiTypes, DecorateMethod, ObsInnerType } from '@polkadot/api/types';
 import { AccountId, Address, ContractExecResult } from '@polkadot/types/interfaces';
-import { Codec, IKeyringPair } from '@polkadot/types/types';
+import { Codec, CodecArg, IKeyringPair } from '@polkadot/types/types';
 import { ApiObject, ContractABIMessage, ContractABIPre, ContractCallOutcome } from '../types';
 
 import BN from 'bn.js';
@@ -38,9 +38,9 @@ export default class Contract<ApiType extends ApiTypes> extends BaseWithTxAndRpc
     this.address = this.registry.createType('Address', address);
   }
 
-  public call (as: 'rpc', message: string, value: BN | number, gasLimit: BN | number, ...params: any[]): ContractCall<ApiType, 'rpc'>;
-  public call (as: 'tx', message: string, value: BN | number, gasLimit: BN | number, ...params: any[]): ContractCall<ApiType, 'tx'>;
-  public call<CallType extends ContractCallTypes> (as: CallType, message: string, value: BN | number, gasLimit: BN | number, ...params: any[]): ContractCall<ApiType, CallType> {
+  public call (as: 'rpc', message: string, value: BN | number, gasLimit: BN | number, ...params: CodecArg[]): ContractCall<ApiType, 'rpc'>;
+  public call (as: 'tx', message: string, value: BN | number, gasLimit: BN | number, ...params: CodecArg[]): ContractCall<ApiType, 'tx'>;
+  public call<CallType extends ContractCallTypes> (as: CallType, message: string, value: BN | number, gasLimit: BN | number, ...params: CodecArg[]): ContractCall<ApiType, CallType> {
     const { def, fn } = this.getMessage(message);
 
     return {
@@ -67,7 +67,7 @@ export default class Contract<ApiType extends ApiTypes> extends BaseWithTxAndRpc
     };
   }
 
-  private _createOutcome (result: ContractExecResult, origin: AccountId, message: ContractABIMessage, params: any[]): ContractCallOutcome {
+  private _createOutcome (result: ContractExecResult, origin: AccountId, message: ContractABIMessage, params: CodecArg[]): ContractCallOutcome {
     let output: Codec | null = null;
 
     if (result.isSuccess) {