Merge pull request #302 from curvefi/feat/add-getGasInfoForL2

Feat/add get gas info for l2
curvefi · Apr 2, 2024 · 49aafcf · 49aafcf
2 parents 269003a + 946d058
commit 49aafcf
Show file tree

Hide file tree

Showing 3 changed files with 32 additions and 2 deletions.
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@curvefi/api",
-  "version": "2.56.12",
+  "version": "2.56.13",
   "description": "JavaScript library for curve.fi",
   "main": "lib/index.js",
   "author": "Macket",

diff --git a/src/index.ts b/src/index.ts
@@ -61,6 +61,7 @@ import {
     getUsdRate,
     getGasPriceFromL1,
     getGasPriceFromL2,
+    getGasInfoForL2,
     getTVL,
     getCoinsData,
     getVolume,
@@ -165,6 +166,7 @@ const curve = {
     getUsdRate,
     getGasPriceFromL1,
     getGasPriceFromL2,
+    getGasInfoForL2,
     getTVL,
     getBalances,
     getAllowance,

diff --git a/src/utils.ts b/src/utils.ts
@@ -515,6 +515,21 @@ export const getUsdRate = async (coin: string): Promise<number> => {
     return await _getUsdRate(coinAddress);
 }
 
+export const getBaseFeeByLastBlock = async ()  => {
+    const provider = curve.provider;
+
+    try {
+        const block = await provider.getBlock('latest');
+        if(!block) {
+            return 0.01
+        }
+
+        return Number(block.baseFeePerGas) / (10**9);
+    } catch (error: any) {
+        throw new Error(error)
+    }
+}
+
 export const getGasPriceFromL1 = async (): Promise<number> => {
     if(L2Networks.includes(curve.chainId) && curve.L1WeightedGasPrice) {
         return curve.L1WeightedGasPrice + 1e9; // + 1 gwei
@@ -525,7 +540,7 @@ export const getGasPriceFromL1 = async (): Promise<number> => {
 
 export const getGasPriceFromL2 = async (): Promise<number> => {
     if(curve.chainId === 42161) {
-        return 0.1 * 1e9; // constant 0.1 gwei
+        return await getBaseFeeByLastBlock()
     }
     if(L2Networks.includes(curve.chainId)) {
         const gasPrice = await curve.contracts[curve.constants.ALIASES.gas_oracle_blob].contract.gasPrice({"gasPrice":"0x2000000"});
@@ -535,6 +550,19 @@ export const getGasPriceFromL2 = async (): Promise<number> => {
     }
 }
 
+export const getGasInfoForL2 = async (): Promise<Record<string, number>> => {
+    if(curve.chainId === 42161) {
+        const baseFee = await getBaseFeeByLastBlock()
+
+        return  {
+            maxFeePerGas: (baseFee * 1.1) + 0.01,
+            maxPriorityFeePerGas: 0.01,
+        }
+    } else {
+        throw Error("This method exists only for L2 networks");
+    }
+}
+
 export const getTxCostsUsd = (ethUsdRate: number, gasPrice: number, gas: number | number[], gasPriceL1 = 0): number => {
     if(Array.isArray(gas)) {
         return ethUsdRate * ((gas[0] * gasPrice / 1e18) + (gas[1] * gasPriceL1 / 1e18));