simulator in a web worker

apps/debugger/webpack.config.js

@@ -2,6 +2,7 @@ const nxWebpack = require('@nrwl/react/plugins/webpack')
 
 module.exports = config => {
   const nxWebpackConfig = nxWebpack(config)
+
   const webpackConfig = {
     ...nxWebpackConfig,
     resolve   : {

apps/remix-ide/.babelrc

@@ -2,7 +2,7 @@
   "presets": ["@babel/preset-env", ["@babel/preset-react", 
     {"runtime": "automatic"}
   ]],
-  "plugins": ["@babel/plugin-proposal-class-properties", "@babel/plugin-transform-runtime"],
+  "plugins": ["@babel/plugin-proposal-class-properties", "@babel/plugin-transform-runtime", "@babel/plugin-proposal-nullish-coalescing-operator"],
   "ignore": [
     "**/node_modules/**"
   ]

apps/remix-ide/src/blockchain/providers/vm.js

@@ -1,10 +1,10 @@
 const Web3 = require('web3')
 const { BN, privateToAddress, hashPersonalMessage } = require('ethereumjs-util')
-const { Provider, extend } = require('@remix-project/remix-simulator')
-
+const { extend } = require('@remix-project/remix-simulator')
 class VMProvider {
   constructor (executionContext) {
     this.executionContext = executionContext
+    this.worker = null
   }
 
   getAccounts (cb) {
@@ -17,10 +17,27 @@ class VMProvider {
   }
 
   resetEnvironment () {
+    if (this.worker) this.worker.terminate()
     this.accounts = {}
-    this.RemixSimulatorProvider = new Provider({ fork: this.executionContext.getCurrentFork() })
-    this.RemixSimulatorProvider.init()
-    this.web3 = new Web3(this.RemixSimulatorProvider)
+    this.worker = new Worker(new URL('./worker-vm', import.meta.url))
+    this.worker.postMessage({ cmd: 'init', fork: this.executionContext.getCurrentFork() })
+    
+    let incr = 0
+    const stamps = {}
+    this.worker.addEventListener('message', (msg) => {
+      if (stamps[msg.data.stamp]) {
+        stamps[msg.data.stamp](msg.data.error, msg.data.result)
+      }
+    })
+    const provider = {
+      sendAsync: (query, callback) => {
+        const stamp = Date.now() + incr
+        incr++
+        stamps[stamp] = callback
+        this.worker.postMessage({ cmd: 'sendAsync', query, stamp })
+      }
+    }
+    this.web3 = new Web3(provider)
     extend(this.web3)
     this.accounts = {}
     this.executionContext.setWeb3('vm', this.web3)

apps/remix-ide/src/blockchain/providers/worker-vm.ts

@@ -0,0 +1,37 @@
+import { Provider } from '@remix-project/remix-simulator'
+
+let provider: Provider = null
+self.onmessage = (e: MessageEvent) => {
+  const data = e.data
+  switch (data.cmd) {
+    case 'init': 
+    {
+      provider = new Provider({ fork: data.fork })
+      if (provider) provider.init()
+      break
+    }
+    case 'sendAsync':
+    {
+      if (provider) {
+        provider.sendAsync(data.query, (error, result) => {
+          result = JSON.parse(JSON.stringify(result))
+          self.postMessage({
+              cmd: 'sendAsyncResult',
+              error,
+              result,
+              stamp: data.stamp
+            })
+        })
+      } else {
+        self.postMessage({
+          cmd: 'sendAsyncResult',
+          error: 'Provider not instanciated',
+          result: null,
+          stamp: data.stamp
+        })
+      }
+      
+      break
+    }      
+  }
+}

babel.config.js

@@ -4,6 +4,7 @@ module.exports = {
         "babel-plugin-replace-ts-export-assignment", 
         "@babel/plugin-transform-modules-commonjs", 
         "@babel/plugin-proposal-class-properties",
+        "@babel/plugin-proposal-nullish-coalescing-operator",
     ["@babel/plugin-proposal-private-property-in-object", { "loose": false }],
     ["@babel/plugin-proposal-private-methods", { "loose": false }]]
 }

libs/remix-debug/src/code/codeUtils.ts

@@ -1,11 +1,11 @@
 'use strict'
-import Common from '@ethereumjs/common'
-import { getOpcodesForHF } from '@ethereumjs/vm/dist/evm/opcodes'
+import { Common } from '@ethereumjs/common'
+import { getOpcodesForHF, OpcodeList } from '@ethereumjs/evm/dist/opcodes/codes'
 import getOpcodes from './opcodes'
 
 export function nameOpCodes (raw, hardfork) {
   const common = new Common({ chain: 'mainnet', hardfork })
-  const opcodes = getOpcodesForHF(common)
+  const opcodes = getOpcodesForHF(common).opcodes
 
   let pushData = ''
   const codeMap = {}
@@ -47,7 +47,7 @@ type Opcode = {
  */
 export function parseCode (raw) {
   const common = new Common({ chain: 'mainnet', hardfork: 'london' })
-  const opcodes = getOpcodesForHF(common)
+  const opcodes = getOpcodesForHF(common).opcodes
 
   const code = []
   for (let i = 0; i < raw.length; i++) {

libs/remix-lib/src/execution/txRunnerVM.ts

@@ -1,10 +1,21 @@
 'use strict'
+import { RunBlockResult, RunTxResult } from '@ethereumjs/vm'
 import { Transaction, FeeMarketEIP1559Transaction } from '@ethereumjs/tx'
 import { Block } from '@ethereumjs/block'
 import { BN, bufferToHex, Address } from 'ethereumjs-util'
+import type { Account } from '@ethereumjs/util'
 import { EventManager } from '../eventManager'
 import { LogsManager } from './logsManager'
 
+export type VMxecutionResult = {
+  result: RunTxResult,
+  transactionHash: string
+  block: Block,
+  tx: Transaction
+}
+
+export type VMExecutionCallBack = (error: string | Error, result?: VMxecutionResult) => void
+
 export class TxRunnerVM {
   event
   blockNumber
@@ -48,13 +59,13 @@ export class TxRunnerVM {
     }
 
     try {
-      this.runInVm(args.from, args.to, data, args.value, args.gasLimit, args.useCall, args.timestamp, callback)
+      this.runInVm(args.from, args.to, data, args.value, args.gasLimit, args.useCall, callback)
     } catch (e) {
       callback(e, null)
     }
   }
 
-  runInVm (from, to, data, value, gasLimit, useCall, timestamp, callback) {
+  runInVm (from: string, to: string, data: string, value: string, gasLimit: number, useCall: boolean, callback: VMExecutionCallBack) {
     const self = this
     let account
     if (!from && useCall && Object.keys(self.vmaccounts).length) {
@@ -65,30 +76,13 @@ export class TxRunnerVM {
     if (!account) {
       return callback('Invalid account selected')
     }
-    if (Number.isInteger(gasLimit)) {
-      gasLimit = '0x' + gasLimit.toString(16)
-    }
-
-    this.getVMObject().stateManager.getAccount(Address.fromString(from)).then((res) => {
-      // See https://github.com/ethereumjs/ethereumjs-tx/blob/master/docs/classes/transaction.md#constructor
-      // for initialization fields and their types
-      if (!value) value = 0
-      if (typeof value === 'string') {
-        if (value.startsWith('0x')) value = new BN(value.replace('0x', ''), 'hex')
-        else {
-          try {
-            value = new BN(value, 10)
-          } catch (e) {
-            return callback('Unable to parse the value ' + e.message)
-          }
-        }
-      }
-
+    
+    this.getVMObject().stateManager.getAccount(Address.fromString(from)).then((res: Account) => {
       const EIP1559 = this.commonContext.hardfork() !== 'berlin' // berlin is the only pre eip1559 fork that we handle.
       let tx
       if (!EIP1559) {
         tx = Transaction.fromTxData({
-          nonce: useCall ? this.nextNonceForCall : new BN(res.nonce),
+          nonce: useCall ? this.nextNonceForCall : res.nonce,
           gasPrice: '0x1',
           gasLimit: gasLimit,
           to: to,
@@ -97,7 +91,7 @@ export class TxRunnerVM {
         }, { common: this.commonContext }).sign(account.privateKey)
       } else {
         tx = FeeMarketEIP1559Transaction.fromTxData({
-          nonce: useCall ? this.nextNonceForCall : new BN(res.nonce),
+          nonce: useCall ? this.nextNonceForCall : res.nonce,
           maxPriorityFeePerGas: '0x01',
           maxFeePerGas: '0x1',
           gasLimit: gasLimit,
@@ -109,15 +103,15 @@ export class TxRunnerVM {
       if (useCall) this.nextNonceForCall++
 
       const coinbases = ['0x0e9281e9c6a0808672eaba6bd1220e144c9bb07a', '0x8945a1288dc78a6d8952a92c77aee6730b414778', '0x94d76e24f818426ae84aa404140e8d5f60e10e7e']
-      const difficulties = [new BN('69762765929000', 10), new BN('70762765929000', 10), new BN('71762765929000', 10)]
+      const difficulties = [69762765929000, 70762765929000, 71762765929000]
 
       const block = Block.fromBlockData({
         header: {
-          timestamp: timestamp || (new Date().getTime() / 1000 | 0),
+          timestamp: new Date().getTime() / 1000 | 0,
           number: self.blockNumber,
           coinbase: coinbases[self.blockNumber % coinbases.length],
           difficulty: difficulties[self.blockNumber % difficulties.length],
-          gasLimit: new BN(gasLimit.replace('0x', ''), 16).imuln(2),
+          gasLimit,
           baseFeePerGas: EIP1559 ? '0x1' : undefined
         },
         transactions: [tx]
@@ -141,14 +135,15 @@ export class TxRunnerVM {
   }
 
   runBlockInVm (tx, block, callback) {
-    this.getVMObject().vm.runBlock({ block: block, generate: true, skipBlockValidation: true, skipBalance: false, skipNonce: true }).then((results) => {
+    this.getVMObject().vm.runBlock({ block: block, generate: true, skipBlockValidation: true, skipBalance: false, skipNonce: true }).then((results: RunBlockResult) => {
       const result = results.results[0]
-      if (result) {
+      /*if (result) {
         const status = result.execResult.exceptionError ? 0 : 1
+        result.receipt.status
         result.status = `0x${status}`
-      }
+      }*/
       callback(null, {
-        result: result,
+        result,
         transactionHash: bufferToHex(Buffer.from(tx.hash())),
         block,
         tx

libs/remix-lib/src/execution/txRunnerWeb3.ts

@@ -47,6 +47,10 @@ export class TxRunnerWeb3 {
   }
 
   _sendTransaction (sendTx, tx, pass, callback) {
+
+    var currentDateTime = new Date();
+    const start = currentDateTime.getTime() / 1000
+    console.log('start', start)
     const cb = (err, resp) => {
       if (err) {
         return callback(err, resp)
@@ -57,6 +61,10 @@ export class TxRunnerWeb3 {
         return new Promise(async (resolve, reject) => {
           const receipt = await tryTillReceiptAvailable(resp, this.getWeb3())
           tx = await tryTillTxAvailable(resp, this.getWeb3())
+          currentDateTime = new Date();
+          const end = currentDateTime.getTime() / 1000
+          console.log('end', end)
+          console.log('stopwatch', end - start)
           resolve({
             receipt,
             tx,

libs/remix-simulator/src/genesis.ts

@@ -1,5 +1,4 @@
 import { Block } from '@ethereumjs/block'
-import { BN } from 'ethereumjs-util'
 
 export function generateBlock (vmContext) {
   return new Promise((resolve, reject) => {
@@ -8,8 +7,8 @@ export function generateBlock (vmContext) {
         timestamp: (new Date().getTime() / 1000 | 0),
         number: 0,
         coinbase: '0x0e9281e9c6a0808672eaba6bd1220e144c9bb07a',
-        difficulty: new BN('69762765929000', 10),
-        gasLimit: new BN('8000000').imuln(1)
+        difficulty: 69762765929000,
+        gasLimit: 8000000
       }
     }, { common: vmContext.vmObject().common })
 

libs/remix-simulator/src/methods/blocks.ts

@@ -1,5 +1,7 @@
 import Web3 from 'web3'
 import { VMContext } from '../vm-context'
+import { bigIntToHex } from '@ethereumjs/util'
+
 export class Blocks {
   vmContext: VMContext
   coinbase: string
@@ -47,14 +49,14 @@ export class Blocks {
      if (receipt) {
       return {
         blockHash: '0x' + block.hash().toString('hex'),
-        blockNumber: '0x' + block.header.number.toString('hex'),
+        blockNumber: bigIntToHex(block.header.number),
         from: receipt.from,
         gas: Web3.utils.toHex(receipt.gas),
         chainId: '0xd05',
         gasPrice: '0x4a817c800', // 20000000000
         hash: receipt.transactionHash,
         input: receipt.input,
-        nonce: '0x' + tx.nonce.toString('hex'),
+        nonce: bigIntToHex(tx.nonce),
         transactionIndex: this.TX_INDEX,
         value: receipt.value === '0x' ? '0x0' : receipt.value,
         to: receipt.to ?  receipt.to : null
@@ -101,14 +103,14 @@ export class Blocks {
       if (receipt) {
        return {
          blockHash: '0x' + block.hash().toString('hex'),
-         blockNumber: '0x' + block.header.number.toString('hex'),
+         blockNumber: bigIntToHex(block.header.number),
          from: receipt.from,
          gas: Web3.utils.toHex(receipt.gas),
          chainId: '0xd05',
          gasPrice: '0x4a817c800', // 20000000000
          hash: receipt.transactionHash,
          input: receipt.input,
-         nonce: '0x' + tx.nonce.toString('hex'),
+         nonce: bigIntToHex(tx.nonce),
          transactionIndex: this.TX_INDEX,
          value: receipt.value === '0x' ? '0x0' : receipt.value,
          to: receipt.to ?  receipt.to : null

libs/remix-simulator/src/vm-context.ts

@@ -5,18 +5,19 @@ import { rlp, keccak, bufferToHex } from 'ethereumjs-util'
 import { execution } from '@remix-project/remix-lib'
 const { LogsManager } = execution
 import { VmProxy } from './VmProxy'
-import VM from '@ethereumjs/vm'
-import Common from '@ethereumjs/common'
-import StateManager from '@ethereumjs/vm/dist/state/stateManager'
-import { StorageDump } from '@ethereumjs/vm/dist/state/interface'
+import { VM } from '@ethereumjs/vm'
+import { Common } from '@ethereumjs/common'
+import { DefaultStateManager } from '@ethereumjs/statemanager'
+import { StorageDump } from '@ethereumjs/statemanager/dist/interface'
 import { Block } from '@ethereumjs/block'
 import { Transaction } from '@ethereumjs/tx'
+import { bigIntToHex } from '@ethereumjs/util'
 
 /*
   extend vm state manager and instanciate VM
 */
 
-class StateManagerCommonStorageDump extends StateManager {
+class StateManagerCommonStorageDump extends DefaultStateManager {
   keyHashes: { [key: string]: string }
   constructor () {
     super()
@@ -52,17 +53,19 @@ class StateManagerCommonStorageDump extends StateManager {
     })
   }
 
+  /*
   async getStateRoot (force = false) {
     await this._cache.flush()
 
     const stateRoot = this._trie.root
     return stateRoot
   }
+  */
 
   async setStateRoot (stateRoot) {
-    if (this._checkpointCount !== 0) {
+    /*if (this._checkpointCount !== 0) {
       throw new Error('Cannot set state root with uncommitted checkpoints')
-    }
+    }*/
 
     await this._cache.flush()
 
@@ -106,7 +109,7 @@ export class VMContext {
     this.blockGasLimitDefault = 4300000
     this.blockGasLimit = this.blockGasLimitDefault
     this.currentFork = fork || 'london'
-    this.currentVm = this.createVm(this.currentFork)
+    this.createVm(this.currentFork).then((vm) => this.currentVm = vm )
     this.blocks = {}
     this.latestBlockNumber = "0x0"
     this.blockByTxHash = {}
@@ -115,14 +118,14 @@ export class VMContext {
     this.logsManager = new LogsManager()
   }
 
-  createVm (hardfork) {
+  async createVm (hardfork) {
     const stateManager = new StateManagerCommonStorageDump()
     const common = new Common({ chain: 'mainnet', hardfork })
-    const vm = new VM({
+    const vm = await VM.create({
       common,
       activatePrecompiles: true,
-      stateManager,
-      allowUnlimitedContractSize: true
+      stateManager
+      // allowUnlimitedContractSize: true
     })
 
     // VmProxy and VMContext are very intricated.
@@ -153,7 +156,7 @@ export class VMContext {
   }
 
   addBlock (block: Block) {
-    let blockNumber = '0x' + block.header.number.toString('hex')
+    let blockNumber = bigIntToHex(block.header.number)
     if (blockNumber === '0x') {
       blockNumber = '0x0'
     }

package.json

@@ -114,12 +114,16 @@
     "build-contracts": "find ./node_modules/@openzeppelin/contracts | grep -i '.sol' > libs/remix-ui/editor/src/lib/providers/completion/contracts/contracts.txt && find ./node_modules/@uniswap/v3-core/contracts | grep -i '.sol' >> libs/remix-ui/editor/src/lib/providers/completion/contracts/contracts.txt"
   },
   "dependencies": {
-    "@babel/plugin-proposal-class-properties": "^7.18.6",
+    "@babel/plugin-proposal-class-properties": "^7.16.0",
+    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.18.6",
     "@erebos/bzz-node": "^0.13.0",
-    "@ethereumjs/block": "^3.5.1",
-    "@ethereumjs/common": "^2.5.0",
-    "@ethereumjs/tx": "^3.3.2",
-    "@ethereumjs/vm": "^5.5.3",
+    "@ethereumjs/block": "^4.0.0",
+    "@ethereumjs/common": "^3.0.0",
+    "@ethereumjs/evm": "^1.0.0",
+    "@ethereumjs/statemanager": "^1.0.0",
+    "@ethereumjs/tx": "^4.0.0",
+    "@ethereumjs/util": "^8.0.0",
+    "@ethereumjs/vm": "^6.0.0",
     "@ethersphere/bee-js": "^3.2.0",
     "@isomorphic-git/lightning-fs": "^4.4.1",
     "@monaco-editor/react": "4.4.5",
@@ -146,7 +150,6 @@
     "deep-equal": "^1.0.1",
     "document-register-element": "1.13.1",
     "eslint-config-prettier": "^8.5.0",
-    "ethereumjs-util": "^7.0.10",
     "ethers": "^5.4.2",
     "ethjs-util": "^0.1.6",
     "express": "^4.18.2",
@@ -331,7 +334,7 @@
     "style-loader": "^3.3.1",
     "tap-spec": "^5.0.0",
     "tape": "^4.13.3",
-    "terser-webpack-plugin": "^4.2.3",
+    "terser-webpack-plugin": "^5.3.6",
     "timers-browserify": "^2.0.12",
     "ts-jest": "^29.0.3",
     "ts-node": "10.9.1",