Added support for eth_createAccessList and sendTransaction support for it

Author: BelfordZ

app/scripts/controllers/permissions/specifications.js

@@ -221,6 +221,7 @@ export const unrestrictedMethods = Object.freeze([
   'eth_coinbase',
   'eth_decrypt',
   'eth_estimateGas',
+  'eth_createAccessList',
   'eth_feeHistory',
   'eth_gasPrice',
   'eth_getBalance',

app/scripts/controllers/transactions/lib/util.js

@@ -9,6 +9,7 @@ import {
 import { isEIP1559Transaction } from '../../../../../shared/modules/transaction.utils';
 import { isValidHexAddress } from '../../../../../shared/modules/hexstring-utils';
 
+const identity = (x) => x;
 const normalizers = {
   from: addHexPrefix,
   to: (to, lowerCase) =>
@@ -21,8 +22,9 @@ const normalizers = {
   maxFeePerGas: addHexPrefix,
   maxPriorityFeePerGas: addHexPrefix,
   type: addHexPrefix,
-  estimateSuggested: (estimate) => estimate,
-  estimateUsed: (estimate) => estimate,
+  estimateSuggested: identity,
+  estimateUsed: identity,
+  accessList: identity,
 };
 
 export function normalizeAndValidateTxParams(txParams, lowerCase = true) {
@@ -224,12 +226,27 @@ export function validateTxParams(txParams, eip1559Compatibility = true) {
         validateInputData(value);
         ensureFieldIsString(txParams, 'data');
         break;
+      case 'accessList':
+        validateAccessList(value);
+        break;
       default:
         ensureFieldIsString(txParams, key);
     }
   });
 }
 
+/**
+ *
+ * @param {*} value
+ */
+export function validateAccessList(value) {
+  if (value instanceof Array === false) {
+    throw ethErrors.rpc.invalidParams(
+      `Invalid transaction params: accessList must be an array of access entries`,
+    );
+  }
+}
+
 /**
  *
  * @param {*} value

app/scripts/controllers/transactions/tx-gas-utils.js

@@ -76,8 +76,27 @@ export default class TxGasUtil {
     delete txParams.maxFeePerGas;
     delete txParams.maxPriorityFeePerGas;
 
-    // estimate tx gas requirements
-    return await this.query.estimateGas(txParams);
+    // dont use ethjs-query here because it will blow up about accessList
+    if (txParams.accessList) {
+      return await new Promise((resolve, reject) => {
+        this.query.rpc.currentProvider.sendAsync(
+          {
+            id: '1',
+            jsonrpc: '2.0',
+            method: 'eth_estimateGas',
+            params: [txParams, 'latest'],
+          },
+          (err, { result, error }) => {
+            if (error || err) {
+              reject(error);
+            } else {
+              resolve(result);
+            }
+          },
+        );
+      });
+    }
+    return this.query.estimateGas(txParams);
   }
 
   /**

app/scripts/controllers/transactions/tx-state-manager.js

@@ -242,6 +242,7 @@ export default class TransactionStateManager extends EventEmitter {
     if (txMeta.txParams) {
       txMeta.txParams = normalizeAndValidateTxParams(txMeta.txParams, false);
     }
+    console.log('add transaction, post normalization', txMeta.txParams);
 
     this.once(`${txMeta.id}:signed`, () => {
       this.removeAllListeners(`${txMeta.id}:rejected`);