Merge pull request #6 from Once-Upon/benguyen0214/ou-1664-include-l2-…

…fee-math-in-the-transformations-repo

feat: update transaction fees

src/transformers/ethereum/fees.ts

@@ -4,23 +4,21 @@ export function transform(block: RawBlock): RawBlock {
   block.transactions = block.transactions.map((tx) => {
     let totalL2FeeWei = BigInt(0);
     if (tx.gasPrice) {
-      const l2GasPrice = BigInt(tx.gasPrice);
-      const l2GasUsed = BigInt(tx.receipt?.gasUsed ?? 0);
+      const l2GasPrice = BigInt(tx.gasPrice ?? 0);
+      const l2GasUsed = BigInt(tx.receipt.gasUsed ?? 0);
 
-      const tenToTheEighteenth = BigInt('1000000000000000000');
+      const l2Gas = l2GasPrice * l2GasUsed;
 
-      const l1FeeContribution = !tx.receipt?.l1GasUsed
-        ? BigInt(0)
-        : (BigInt(tx.receipt?.l1GasPrice ?? 0) *
-            BigInt(tx.receipt.l1GasUsed) *
-            BigInt(
-              parseFloat(tx.receipt?.l1FeeScalar ?? '0') * Math.pow(10, 18),
-            )) /
-          tenToTheEighteenth;
+      const l1GasUsed = BigInt(tx.receipt.l1GasUsed ?? 0);
+      const l1GasPrice = BigInt(tx.receipt.l1GasPrice ?? 0);
 
-      const l2FeeContribution = l2GasPrice * l2GasUsed;
+      const l1GasWithoutScalar = l1GasPrice * l1GasUsed;
 
-      totalL2FeeWei = l2FeeContribution + l1FeeContribution;
+      const scalar = Number(tx.receipt.l1FeeScalar ?? 0);
+      const l1GasWithoutScalarAsNumber = Number(l1GasWithoutScalar);
+      const l1GasWithScalar = l1GasWithoutScalarAsNumber * scalar;
+
+      totalL2FeeWei = BigInt(l1GasWithScalar) + l2Gas;
     }
 
     tx.baseFeePerGas = block.baseFeePerGas;