fix linting issues; missing requires and params

src/blockchain/blockchain.js

@@ -11,8 +11,6 @@ const Personal = require('web3-eth-personal')
 const Web3 = require('web3')
 
 const async = require('async')
-const { BN, privateToAddress, isValidPrivate, stripHexPrefix } = require('ethereumjs-util')
-const crypto = require('crypto')
 const { EventEmitter } = require('events')
 
 const { resultToRemixTx } = require('./txResultHelper')
@@ -375,7 +373,7 @@ class Blockchain {
    * Create a VM Account
    * @param {{privateKey: string, balance: string}} newAccount The new account to create
    */
-  createVMAccount(newAccount) {
+  createVMAccount (newAccount) {
     if (this.executionContext.getProvider() !== 'vm') {
       throw new Error('plugin API does not allow creating a new account through web3 connection. Only vm mode is allowed')
     }

src/blockchain/providers/injected.js

 const Web3 = require('web3')
+const { stripHexPrefix } = require('ethereumjs-util')
 
 class InjectedProvider {
 
@@ -10,7 +11,7 @@ class InjectedProvider {
     return this.executionContext.web3().eth.getAccounts(cb)
   }
 
-  newAccount(passwordPromptCb, cb) {
+  newAccount (passwordPromptCb, cb) {
     passwordPromptCb((passphrase) => {
       this.executionContext.web3().personal.newAccount(passphrase, cb)
     })

src/blockchain/providers/node.js

 const Web3 = require('web3')
+const { stripHexPrefix } = require('ethereumjs-util')
 
 class NodeProvider {
 
@@ -14,7 +15,7 @@ class NodeProvider {
     return this.executionContext.web3().eth.getAccounts(cb)
   }
 
-  newAccount(passwordPromptCb, cb) {
+  newAccount (passwordPromptCb, cb) {
     if (!this.config.get('settings/personal-mode')) {
       return cb('Not running in personal mode')
     }
@@ -26,7 +27,7 @@ class NodeProvider {
   resetEnvironment () {
   }
 
-  getBalanceInEther(address, cb) {
+  getBalanceInEther (address, cb) {
     address = stripHexPrefix(address)
     this.executionContext.web3().eth.getBalance(address, (err, res) => {
       if (err) {

src/blockchain/providers/vm.js

 const Web3 = require('web3')
-const { privateToAddress, toChecksumAddress } = require('ethereumjs-util')
+const { BN, privateToAddress, toChecksumAddress, isValidPrivate, stripHexPrefix } = require('ethereumjs-util')
+const crypto = require('crypto')
 
 class VMProvider {
 
@@ -43,14 +44,14 @@ class VMProvider {
     this.accounts[toChecksumAddress('0x' + address.toString('hex'))] = { privateKey, nonce: 0 }
   }
 
-  createVMAccount (passwordPromptCb, cb) {
+  createVMAccount (newAccount) {
     const { privateKey, balance } = newAccount
     this._addAccount(privateKey, balance)
     const privKey = Buffer.from(privateKey, 'hex')
     return '0x' + privateToAddress(privKey).toString('hex')
   }
 
-  newAccount(_passwordPromptCb, cb) {
+  newAccount (_passwordPromptCb, cb) {
     let privateKey
     do {
       privateKey = crypto.randomBytes(32)