Add handling for hh 2.11.0

.circleci/config.yml

@@ -12,8 +12,8 @@ step_install_nvm: &step_install_nvm
       set +e
       export NVM_DIR="/opt/circleci/.nvm"
       [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
-      nvm install v12.16.0
-      nvm alias default v12.16.0
+      nvm install v14.19.0
+      nvm alias default v14.19.0
       echo 'export NVM_DIR="/opt/circleci/.nvm"' >> $BASH_ENV
       echo "[ -s \"$NVM_DIR/nvm.sh\" ] && . \"$NVM_DIR/nvm.sh\"" >> $BASH_ENV
 

lib/api.js

@@ -282,7 +282,12 @@ class API {
     while (cur._wrapped) {
       cur = Object.assign({}, cur._wrapped)
     }
-    cur._node._vm.on('step', self.collector.step.bind(self.collector))
+
+    if (cur._node._vm.on) {
+      cur._node._vm.on('step', self.collector.step.bind(self.collector))
+    } else {
+      cur._node._vm.evm.events.on('step', self.collector.step.bind(self.collector))
+    }
   }
 
   // Temporarily disabled because some relevant traces aren't available

lib/collector.js

@@ -22,7 +22,13 @@ class DataCollector {
     try {
       if (this.validOpcodes[info.opcode.name] && info.stack.length > 0){
         const idx = info.stack.length - 1;
-        let hash = web3Utils.toHex(info.stack[idx]).toString();
+
+        let hash;
+        if (typeof info.stack[idx] === 'bigint') {
+          hash = '0x' + info.stack[idx].toString(16);
+        } else {
+          hash = web3Utils.toHex(info.stack[idx]).toString();
+        }
         this._registerHash(hash)
       }
     } catch (err) { /*Ignore*/ };

scripts/run-zeppelin.sh

@@ -28,6 +28,9 @@ cd openzeppelin-contracts
 echo ">>>>> npm install"
 npm install
 
+# Use HH Merge version to test dual vm patch
+npm install hardhat@latest
+
 echo ">>>>> npm uninstall solidity-coverage --save-dev"
 npm uninstall solidity-coverage --save-dev