Add configurable maxFeePerGas and default to it if set

.changeset/eighty-pianos-wait.md

@@ -0,0 +1,6 @@
+---
+"@nomicfoundation/ignition-core": patch
+"@nomicfoundation/hardhat-ignition": patch
+---
+
+Add configurable maxFeePerGas and default to it if set

packages/hardhat-ignition-core/src/deploy.ts

@@ -52,6 +52,7 @@ export async function deploy<
   strategy,
   strategyConfig,
   maxFeePerGasLimit,
+  maxFeePerGas,
   maxPriorityFeePerGas,
   gasPrice,
   disableFeeBumping,
@@ -72,6 +73,7 @@ export async function deploy<
   strategy?: StrategyT;
   strategyConfig?: StrategyConfig[StrategyT];
   maxFeePerGasLimit?: bigint;
+  maxFeePerGas?: bigint;
   maxPriorityFeePerGas?: bigint;
   gasPrice?: bigint;
   disableFeeBumping?: boolean;
@@ -120,6 +122,7 @@ export async function deploy<
 
   const jsonRpcClient = new EIP1193JsonRpcClient(provider, {
     maxFeePerGasLimit,
+    maxFeePerGas,
     maxPriorityFeePerGas,
     gasPrice,
   });

packages/hardhat-ignition-core/src/internal/execution/jsonrpc-client.ts

@@ -193,6 +193,7 @@ export class EIP1193JsonRpcClient implements JsonRpcClient {
     private readonly _provider: EIP1193Provider,
     private readonly _config?: {
       maxFeePerGasLimit?: bigint;
+      maxFeePerGas?: bigint;
       maxPriorityFeePerGas?: bigint;
       gasPrice?: bigint;
     }
@@ -687,6 +688,7 @@ export class EIP1193JsonRpcClient implements JsonRpcClient {
 
       // Logic copied from ethers v6
       const maxFeePerGas =
+        this._config?.maxFeePerGas ??
         latestBlock.baseFeePerGas * 2n + maxPriorityFeePerGas;
 
       return {

packages/hardhat-ignition-core/test-integrations/new-api/internal/new-execution/jsonrpc-client.ts

@@ -121,6 +121,20 @@ describe("JSON-RPC client", function () {
           assert.equal(fees.maxPriorityFeePerGas, 1n);
         });
 
+        it("Should use the configured maxFeePerGas", async function () {
+          const maxFeeClient = new EIP1193JsonRpcClient(
+            this.hre.network.provider,
+            {
+              maxFeePerGas: 1n,
+            }
+          );
+          const fees = await maxFeeClient.getNetworkFees();
+
+          assert("maxFeePerGas" in fees);
+
+          assert.equal(fees.maxFeePerGas, 1n);
+        });
+
         it("Should use return legacy fees when deploying to polygon network (chainId 137)", async function () {
           const polygonClient = new EIP1193JsonRpcClient(
             {

packages/hardhat-ignition/src/index.ts

@@ -49,6 +49,7 @@ extendConfig((config, userConfig) => {
 
     config.networks[networkName].ignition = {
       maxFeePerGasLimit: userNetworkConfig.ignition?.maxFeePerGasLimit,
+      maxFeePerGas: userNetworkConfig.ignition?.maxFeePerGas,
       maxPriorityFeePerGas: userNetworkConfig.ignition?.maxPriorityFeePerGas,
       gasPrice: userNetworkConfig.ignition?.gasPrice,
       disableFeeBumping: userNetworkConfig.ignition?.disableFeeBumping,
@@ -325,6 +326,8 @@ ignitionScope
           strategyConfig,
           maxFeePerGasLimit:
             hre.config.networks[hre.network.name]?.ignition.maxFeePerGasLimit,
+          maxFeePerGas:
+            hre.config.networks[hre.network.name]?.ignition.maxFeePerGas,
           maxPriorityFeePerGas:
             hre.config.networks[hre.network.name]?.ignition
               .maxPriorityFeePerGas,

packages/hardhat-ignition/src/type-extensions.ts

@@ -16,6 +16,7 @@ declare module "hardhat/types/config" {
   export interface HardhatNetworkUserConfig {
     ignition?: {
       maxFeePerGasLimit?: bigint;
+      maxFeePerGas?: bigint;
       maxPriorityFeePerGas?: bigint;
       gasPrice?: bigint;
       disableFeeBumping?: boolean;
@@ -26,6 +27,7 @@ declare module "hardhat/types/config" {
   export interface HardhatNetworkConfig {
     ignition: {
       maxFeePerGasLimit?: bigint;
+      maxFeePerGas?: bigint;
       maxPriorityFeePerGas?: bigint;
       gasPrice?: bigint;
       disableFeeBumping?: boolean;
@@ -36,6 +38,7 @@ declare module "hardhat/types/config" {
   export interface HttpNetworkUserConfig {
     ignition?: {
       maxFeePerGasLimit?: bigint;
+      maxFeePerGas?: bigint;
       maxPriorityFeePerGas?: bigint;
       gasPrice?: bigint;
       disableFeeBumping?: boolean;
@@ -46,6 +49,7 @@ declare module "hardhat/types/config" {
   export interface HttpNetworkConfig {
     ignition: {
       maxFeePerGasLimit?: bigint;
+      maxFeePerGas?: bigint;
       maxPriorityFeePerGas?: bigint;
       gasPrice?: bigint;
       disableFeeBumping?: boolean;