From e42427afa9a57673576da68cfbbee1356ffb5c0d Mon Sep 17 00:00:00 2001
From: Miguel Palhas <mpalhas@gmail.com>
Date: Fri, 11 Mar 2022 19:21:58 +0000
Subject: [PATCH] feat: add BigInt support within BigNumberish

---
 __tests__/utils/uint256.test.ts | 9 +++++++++
 src/utils/number.ts             | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/__tests__/utils/uint256.test.ts b/__tests__/utils/uint256.test.ts
index eef19f41d..944ccaa13 100644
--- a/__tests__/utils/uint256.test.ts
+++ b/__tests__/utils/uint256.test.ts
@@ -24,6 +24,15 @@ describe('cairo uint256', () => {
       }
     `);
   });
+  test('should convert BigInt to uint256 struct', () => {
+    const uint256 = bnToUint256(BigInt(UINT_128_MAX.add(ONE).toString()));
+    expect(uint256).toMatchInlineSnapshot(`
+      Object {
+        "high": "0x1",
+        "low": "0x0",
+      }
+    `);
+  });
   test('should throw if BN over uint256 range', () => {
     expect(() => bnToUint256(UINT_256_MAX.add(toBN(1)))).toThrowErrorMatchingInlineSnapshot(
       `"Number is too large"`
diff --git a/src/utils/number.ts b/src/utils/number.ts
index 4cb448902..0ddef2c5d 100644
--- a/src/utils/number.ts
+++ b/src/utils/number.ts
@@ -3,7 +3,7 @@ import assert from 'minimalistic-assert';
 
 import { addHexPrefix, removeHexPrefix } from './encode';
 
-export type BigNumberish = string | number | BN;
+export type BigNumberish = string | number | BN | BigInt;
 
 export function isHex(hex: string): boolean {
   return hex.startsWith('0x');