fixed EvmCore.build, Evm20Contract.getDecimals

thepower · Jan 22, 2024 · f8cd666 · f8cd666
1 parent 1c110e9
commit f8cd666
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Showing 3 changed files with 12 additions and 3 deletions.
diff --git a/packages/tssdk/src/contracts/evm20Contract.ts b/packages/tssdk/src/contracts/evm20Contract.ts
@@ -34,7 +34,7 @@ export class Evm20Contract {
     return symbol;
   }
 
-  public async getDecimals(): Promise<number> {
+  public async getDecimals(): Promise<bigint> {
     const decimals = await this.evmContract.scGet('decimals', []);
     return decimals;
   }

diff --git a/packages/tssdk/src/helpers/bnHex.helper.ts b/packages/tssdk/src/helpers/bnHex.helper.ts
@@ -0,0 +1,6 @@
+export function bnToHex(bnParam: any) {
+  const bn = BigInt(bnParam);
+  let hex = bn.toString(16);
+  if (hex.length % 2) { hex = `0${hex}`; }
+  return hex;
+}
diff --git a/packages/tssdk/src/libs/evm-api/evmCore.ts b/packages/tssdk/src/libs/evm-api/evmCore.ts
@@ -1,5 +1,8 @@
 import { VM } from '@ethereumjs/vm';
-import { Address, bytesToHex, hexToBytes } from '@ethereumjs/util';
+import {
+  Address, bytesToHex, hexToBytes,
+} from '@ethereumjs/util';
+import { bnToHex } from '../../helpers/bnHex.helper';
 import { AddressApi, NetworkApi, TransactionsApi } from '../index';
 
 import { AccountKey } from '../../typings';
@@ -106,7 +109,7 @@ export class EvmCore {
     const vm = await VM.create();
 
     vm.stateManager.getContractStorage = async (address: Address, key: Uint8Array) => {
-      const val = bytesToHex(key);
+      const val = bnToHex(bytesToHex(key));
 
       const state = await network.loadScStateByKey(AddressApi.hexToTextAddress(AddressApi.evmAddressToHexAddress(address.toString())), val);
       return Buffer.from(state);