Fixup base fee type

packages/web3-core/CHANGELOG.md

@@ -183,4 +183,5 @@ Documentation:
 
 ### Changed
 
--   defaultTransactionType is now type 0x2 instead of 0x0 (#6282)
+-   defaultTransactionType is now type 0x2 instead of 0x0 (#6282)
+-   Allows formatter to parse large base fee (#6456)

packages/web3-core/src/formatters.ts

@@ -450,7 +450,7 @@ export const outputBlockFormatter = (block: BlockInput): BlockOutput => {
 	}
 
 	if (block.baseFeePerGas) {
-		modifiedBlock.baseFeePerGas = hexToNumber(block.baseFeePerGas);
+		modifiedBlock.baseFeePerGas = outputBigIntegerFormatter(block.baseFeePerGas);
 	}
 
 	return modifiedBlock;

packages/web3-core/test/unit/formatters.test.ts

@@ -537,12 +537,13 @@ describe('formatters', () => {
 		});
 
 		it('should convert "baseFeePerGas" from hex to number', () => {
+			jest.spyOn(formatters, 'outputBigIntegerFormatter').mockReturnValue(123);
 			const result = outputBlockFormatter({
 				...validBlock,
 				baseFeePerGas: 'baseFeePerGas',
 			} as any);
 
-			expect(utils.hexToNumber).toHaveBeenCalledWith('baseFeePerGas');
+			expect(outputBigIntegerFormatter).toHaveBeenCalledWith('baseFeePerGas');
 			expect(result).toEqual(expect.objectContaining({ baseFeePerGas: hexToNumberResult }));
 		});
 	});