From 9c85edf7286f16b4ec619e90372c36ee5c844db6 Mon Sep 17 00:00:00 2001
From: emizzle <eric.mastro@gmail.com>
Date: Mon, 10 Jun 2019 22:11:29 +1000
Subject: [PATCH 1/4] Removing PK, adding metamask support

WIP
---
 package.json |   1 +
 src/index.js | 110 +++++++++++++++++++++++++++++----------------------
 2 files changed, 63 insertions(+), 48 deletions(-)

diff --git a/package.json b/package.json
index f43ae01..a9c49b7 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "> 0.2%"
   ],
   "files": [
+    "src",
     "dist"
   ],
   "scripts": {
diff --git a/src/index.js b/src/index.js
index 8b0983e..54efecf 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,4 +1,4 @@
-/* global Web3 */
+/* global EmbarkJS */
 import BigNumber from "bn.js";
 import ChildChain from "@omisego/omg-js-childchain";
 import RootChain from "@omisego/omg-js-rootchain";
@@ -19,46 +19,60 @@ export default class BaseEmbarkOmg {
 
     // plugin opts
     this.plasmaContractAddress = pluginConfig.PLASMA_CONTRACT_ADDRESS;
-    this.web3ProviderUrl = pluginConfig.WEB3_PROVIDER_URL;
+    //this.web3ProviderUrl = pluginConfig.WEB3_PROVIDER_URL;
     this.watcherUrl = pluginConfig.WATCHER_URL;
     this.childChainUrl = pluginConfig.CHILDCHAIN_URL;
   }
-  async init(accounts, web3Path) {
+
+  async init(web3) { //}, web3Path) {
+
     try {
       if (this.initing) {
         const message = "Already intializing the Plasma chain, please wait...";
-        this.logger.error(message);
+        //this.logger.error(message);
         throw new Error(message);
       }
       this.initing = true;
 
-      if (!(accounts && accounts.length)) {
-        this.logger.error(ACCOUNT_CONFIG_ERROR);
-        throw new Error(ACCOUNT_CONFIG_ERROR);
-      }
-      const { address, privateKey } = accounts[0];
-      this.address = address;
-      this.addressPrivateKey = privateKey;
+      // if (!(accounts && accounts.length)) {
+      //   //this.logger.error(ACCOUNT_CONFIG_ERROR);
+      //   throw new Error(ACCOUNT_CONFIG_ERROR);
+      // }
+      //const { address, privateKey } = accounts[0];
+      //this.address = address;
+      //this.addressPrivateKey = privateKey;
+
+      // this.address = accounts[0];
 
 
       // init Web3
-      const web3Lib = web3Path ? require(web3Path) : Web3;
-      this.web3 = new web3Lib();
-      const web3Provider = new web3Lib.providers.HttpProvider(this.web3ProviderUrl);
-      this.web3.setProvider(web3Provider);
+      // const web3Lib = web3Path ? require(web3Path) : Web3;
+      // this.web3 = new web3Lib();
+      // if (!web3) {
+      //   web3 = EmbarkJS.Blockchain.providers["web3"];
+      // }
+      this.web3 = web3;
+      let accounts = await this.web3.eth.getAccounts();
+      this.address = accounts.length > 1 ? accounts[1] : accounts[0]; // ignore the first account because it is our deployer account, we want the manually added account
+
+      // if(!this.web3) {
+      //   throw new Error("web3 cannot be found. Please ensure you have the 'embarkjs-connector-web3' plugin installed in your DApp.");
+      // }
+      // const web3Provider = new web3Lib.providers.HttpProvider(this.web3ProviderUrl);
+      //this.web3.setProvider(web3Provider);
 
       // check account balance on the main chain
-      try {
-        this.maxDeposit = await this.web3.eth.getBalance(this.address);
-        if (!this.maxDeposit || new BigNumber(this.maxDeposit).lte(0)) {
-          this.logger.error(ACCOUNT_BALANCE_ERROR);
-          throw new Error(ACCOUNT_BALANCE_ERROR);
-        }
-        this.maxDeposit = new BigNumber(this.maxDeposit);
-      }
-      catch (e) {
-        this.logger.error(`Error getting balance for account ${this.address}: ${e}`);
-      }
+      // try {
+      //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
+      //   if (!this.maxDeposit || new BigNumber(this.maxDeposit).lte(0)) {
+      //     //this.logger.error(ACCOUNT_BALANCE_ERROR);
+      //     throw new Error(ACCOUNT_BALANCE_ERROR);
+      //   }
+      //   this.maxDeposit = new BigNumber(this.maxDeposit);
+      // }
+      // catch (e) {
+      //   this.logger.warn(`Error getting balance for account ${this.address}: ${e}`);
+      // }
 
       // set up the Plasma chain
       this.rootChain = new RootChain(this.web3, this.plasmaContractAddress);
@@ -70,7 +84,7 @@ export default class BaseEmbarkOmg {
     }
     catch (e) {
       const message = `Error initializing Plasma chain: ${e}`;
-      this.logger.error(message);
+      //this.logger.error(message);
       throw new Error(message);
     }
   }
@@ -78,37 +92,37 @@ export default class BaseEmbarkOmg {
   async deposit(amount) {
     if (!this.inited) {
       const message = "Please wait for the Plasma chain to initialize...";
-      this.logger.error(message);
+      // this.logger.error(message);
       throw new Error(message);
     }
     amount = new BigNumber(amount);
     if (!amount || amount.lte(0)) {
       const message = "You must deposit more than 0 wei.";
-      this.logger.error(message);
+      // this.logger.error(message);
       throw new Error(message);
     }
-    if (amount.gt(this.maxDeposit)) {
-      // recheck balance in case it was updated in a recent tx
-      this.maxDeposit = await this.web3.eth.getBalance(this.address);
-      if (amount.gt(this.maxDeposit)) {
-        const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.address} and then try again.`;
-        this.logger.error(message);
-        throw new Error(message);
-      }
-    }
+    // if (amount.gt(this.maxDeposit) && this.maxDeposit.gt(0)) {
+    //   // recheck balance in case it was updated in a recent tx
+    //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
+    //   if (amount.gt(this.maxDeposit)) {
+    //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.address} and then try again.`;
+    //     // this.logger.error(message);
+    //     throw new Error(message);
+    //   }
+    // }
     // const DEPOSIT_AMT = "100000";
     this.logger.info(`Depositing ${amount} wei...`);
     const depositTx = transaction.encodeDeposit(this.address, amount, transaction.ETH_CURRENCY);
     try {
-      const receipt = await this.rootChain.depositEth(depositTx, amount, { from: this.address, privateKey: this.addressPrivateKey });
+      const receipt = await this.rootChain.depositEth(depositTx, amount, { from: this.address });//, privateKey: this.addressPrivateKey });
       this.logger.trace(receipt);
       const message = `Successfully deposited ${amount} wei in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${receipt.transactionHash}`;
-      this.logger.info(message);
+      // this.logger.info(message);
       return message;
     }
     catch (e) {
       const message = `Error depositing ${amount} wei: ${e}`;
-      this.logger.error(message);
+      // this.logger.error(message);
       throw new Error(message);
     }
   }
@@ -119,11 +133,11 @@ export default class BaseEmbarkOmg {
     const utxos = await this.childChain.getUtxos(this.address);
     const utxosToSpend = this.selectUtxos(utxos, val, transaction.ETH_CURRENCY);
     if (!utxosToSpend) {
-      return this.logger.error(`No utxo big enough to cover the amount ${val}`);
+      throw new Error(`No utxo big enough to cover the amount ${val}`);
     }
     val = new BigNumber(val);
     if (!val || val.lte(0)) {
-      return this.logger.error("Transaction value must be more than 0 wei.");
+      throw new Error("Transaction value must be more than 0 wei.");
     }
 
     const txBody = {
@@ -151,7 +165,7 @@ export default class BaseEmbarkOmg {
     try {
       const unsignedTx = await this.childChain.createTransaction(txBody);
 
-      const signatures = await this.childChain.signTransaction(unsignedTx, [this.addressPrivateKey]);
+      const signatures = await this.childChain.signTransaction(unsignedTx);//, [this.addressPrivateKey]);
 
       const signedTx = await this.childChain.buildSignedTransaction(unsignedTx, signatures);
 
@@ -159,11 +173,11 @@ export default class BaseEmbarkOmg {
 
       const message = `Successfully submitted tx on the child chain: ${JSON.stringify(result)}\nView the transaction: http://quest.ari.omg.network/transaction/${result.txhash}`;
 
-      this.logger.info(message);
+      //this.logger.info(message);
       return message;
     }
     catch (e) {
-      this.logger.error(e);
+      // this.logger.error(e);
       throw e;
     }
   }
@@ -191,12 +205,12 @@ export default class BaseEmbarkOmg {
           }
         );
         const message = `Exited UTXO from address ${fromAddress} with value ${utxo.amount}. View the transaction: https://rinkeby.etherscan.io/tx/${receipt.transactionHash}`;
-        this.logger.info(message);
+        // this.logger.info(message);
         return message;
       }
       catch (e) {
         const message = `Error exiting the Plasma chain for UTXO ${JSON.stringify(utxo)}: ${e}`;
-        this.logger.error(message);
+        // this.logger.error(message);
         errors.push(message);
       }
     });

From 07c245dbbb4e2325478713d610dda77fa5cc51b6 Mon Sep 17 00:00:00 2001
From: emizzle <eric.mastro@gmail.com>
Date: Wed, 12 Jun 2019 16:43:03 +1000
Subject: [PATCH 2/4] Migrate to v0.2 Samrong

---
 package.json |  11 +--
 src/index.js | 265 +++++++++++++++++++++++++++++++--------------------
 src/utils.js | 106 +++++++++++++++++++++
 yarn.lock    | 143 ++++-----------------------
 4 files changed, 295 insertions(+), 230 deletions(-)
 create mode 100644 src/utils.js

diff --git a/package.json b/package.json
index a9c49b7..6d49a46 100644
--- a/package.json
+++ b/package.json
@@ -50,13 +50,10 @@
   "dependencies": {
     "@babel/plugin-proposal-optional-chaining": "7.2.0",
     "@babel/runtime-corejs2": "7.3.1",
-    "@omisego/omg-js": "1.2.2",
-    "@omisego/omg-js-childchain": "1.2.1",
-    "@omisego/omg-js-rootchain": "1.2.2",
-    "@omisego/omg-js-util": "1.2.1",
-    "async": "3.0.1",
-    "axios": "0.19.0",
-    "ethers": "4.0.28"
+    "@omisego/omg-js": "2.0.0-v0.2",
+    "@omisego/omg-js-childchain": "2.0.0-v0.2",
+    "@omisego/omg-js-rootchain": "2.0.0-v0.2",
+    "@omisego/omg-js-util": "2.0.0-v0.2"
   },
   "devDependencies": {
     "@babel/cli": "7.2.3",
diff --git a/src/index.js b/src/index.js
index 54efecf..d4a3d33 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,11 +1,16 @@
-/* global EmbarkJS */
+/* global web3, ethereum */
+import {
+  confirmTransaction,
+  normalizeUrl,
+  selectUtxos,
+  signTypedData
+} from "./utils";
 import BigNumber from "bn.js";
 import ChildChain from "@omisego/omg-js-childchain";
 import RootChain from "@omisego/omg-js-rootchain";
 import { transaction } from "@omisego/omg-js-util";
 
-const ACCOUNT_CONFIG_ERROR = "Blockchain accounts configuration is missing. To use the Embark-OMG plugin, you must configure blockchain accounts to use either a private key file, a private key, or a mnemonic.";
-const ACCOUNT_BALANCE_ERROR = "The configured account does not have enough funds. Please make sure this account has Rinkeby ETH.";
+const web3Options = { transactionConfirmationBlocks: 1 };
 
 export default class BaseEmbarkOmg {
   constructor({ pluginConfig, logger }) {
@@ -16,57 +21,61 @@ export default class BaseEmbarkOmg {
     this.addressPrivateKey = "";
     this.maxDeposit = 0;
 
-
     // plugin opts
-    this.plasmaContractAddress = pluginConfig.PLASMA_CONTRACT_ADDRESS;
-    //this.web3ProviderUrl = pluginConfig.WEB3_PROVIDER_URL;
-    this.watcherUrl = pluginConfig.WATCHER_URL;
-    this.childChainUrl = pluginConfig.CHILDCHAIN_URL;
+    this.plasmaContractAddress =
+      pluginConfig.PLASMA_CONTRACT_ADDRESS ||
+      "0x740ecec4c0ee99c285945de8b44e9f5bfb71eea7";
+    this.watcherUrl = normalizeUrl(
+      pluginConfig.WATCHER_URL || "https://watchersamrong.omg.network/"
+    );
+    this.childChainUrl = normalizeUrl(
+      pluginConfig.CHILDCHAIN_URL || "https://samrong.omg.network/"
+    );
+    this.childChainExplorerUrl = normalizeUrl(
+      pluginConfig.CHILDCHAIN_EXPLORER_URL ||
+        "https://quest.samrong.omg.network"
+    );
   }
 
-  async init(web3) { //}, web3Path) {
+  async initWeb3() {
+    if (window.ethereum) {
+      this.web3 = new Web3(window.ethereum, null, web3Options);
+      try {
+        // Request account access
+        await ethereum.enable();
+        return true;
+      } catch (err) {
+        // User denied account access :(
+        console.error(err);
+      }
+    } else if (window.web3) {
+      this.web3 = new Web3(window.web3.currentProvider, null, web3Options);
+      return true;
+    }
+    // No web3...
+    return false;
+  }
+
+  async init(web3) {
+    //}, web3Path) {
 
     try {
       if (this.initing) {
         const message = "Already intializing the Plasma chain, please wait...";
-        //this.logger.error(message);
         throw new Error(message);
       }
       this.initing = true;
 
-      // if (!(accounts && accounts.length)) {
-      //   //this.logger.error(ACCOUNT_CONFIG_ERROR);
-      //   throw new Error(ACCOUNT_CONFIG_ERROR);
+      // if (!(await this.initWeb3())) {
+        this.web3 = web3;
       // }
-      //const { address, privateKey } = accounts[0];
-      //this.address = address;
-      //this.addressPrivateKey = privateKey;
-
-      // this.address = accounts[0];
-
-
-      // init Web3
-      // const web3Lib = web3Path ? require(web3Path) : Web3;
-      // this.web3 = new web3Lib();
-      // if (!web3) {
-      //   web3 = EmbarkJS.Blockchain.providers["web3"];
-      // }
-      this.web3 = web3;
       let accounts = await this.web3.eth.getAccounts();
       this.address = accounts.length > 1 ? accounts[1] : accounts[0]; // ignore the first account because it is our deployer account, we want the manually added account
-
-      // if(!this.web3) {
-      //   throw new Error("web3 cannot be found. Please ensure you have the 'embarkjs-connector-web3' plugin installed in your DApp.");
-      // }
-      // const web3Provider = new web3Lib.providers.HttpProvider(this.web3ProviderUrl);
-      //this.web3.setProvider(web3Provider);
-
       // check account balance on the main chain
       // try {
       //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
       //   if (!this.maxDeposit || new BigNumber(this.maxDeposit).lte(0)) {
-      //     //this.logger.error(ACCOUNT_BALANCE_ERROR);
-      //     throw new Error(ACCOUNT_BALANCE_ERROR);
+      //     throw new Error("The configured account does not have enough funds. Please make sure this account has Rinkeby ETH.");
       //   }
       //   this.maxDeposit = new BigNumber(this.maxDeposit);
       // }
@@ -76,29 +85,30 @@ export default class BaseEmbarkOmg {
 
       // set up the Plasma chain
       this.rootChain = new RootChain(this.web3, this.plasmaContractAddress);
-      this.childChain = new ChildChain(this.watcherUrl, this.childChainUrl);
+      this.childChain = new ChildChain(this.watcherUrl); //, this.childChainUrl);
 
       // set lifecycle state vars
       this.initing = false;
       this.inited = true;
-    }
-    catch (e) {
+    } catch (e) {
       const message = `Error initializing Plasma chain: ${e}`;
-      //this.logger.error(message);
       throw new Error(message);
     }
   }
 
   async deposit(amount) {
+    // TODO: Update this to support ERC-20's
+    const currency = transaction.ETH_CURRENCY;
+    const approveDeposit = false;
+    const erc20abi = {};
+
     if (!this.inited) {
       const message = "Please wait for the Plasma chain to initialize...";
-      // this.logger.error(message);
       throw new Error(message);
     }
     amount = new BigNumber(amount);
     if (!amount || amount.lte(0)) {
       const message = "You must deposit more than 0 wei.";
-      // this.logger.error(message);
       throw new Error(message);
     }
     // if (amount.gt(this.maxDeposit) && this.maxDeposit.gt(0)) {
@@ -106,38 +116,64 @@ export default class BaseEmbarkOmg {
     //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
     //   if (amount.gt(this.maxDeposit)) {
     //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.address} and then try again.`;
-    //     // this.logger.error(message);
     //     throw new Error(message);
     //   }
     // }
-    // const DEPOSIT_AMT = "100000";
-    this.logger.info(`Depositing ${amount} wei...`);
-    const depositTx = transaction.encodeDeposit(this.address, amount, transaction.ETH_CURRENCY);
-    try {
-      const receipt = await this.rootChain.depositEth(depositTx, amount, { from: this.address });//, privateKey: this.addressPrivateKey });
-      this.logger.trace(receipt);
-      const message = `Successfully deposited ${amount} wei in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${receipt.transactionHash}`;
-      // this.logger.info(message);
-      return message;
+    // Create the deposit transaction
+    const depositTx = transaction.encodeDeposit(this.address, amount, currency);
+
+    if (currency === transaction.ETH_CURRENCY) {
+      this.logger.info(`Depositing ${amount} wei...`);
+      // ETH deposit
+      try {
+        const receipt = await this.rootChain.depositEth(depositTx, amount, {
+          from: this.address
+        });
+        this.logger.trace(receipt);
+        const message = `Successfully deposited ${amount} wei in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${
+          receipt.transactionHash
+        }`;
+        return message;
+      } catch (e) {
+        const message = `Error depositing ${amount} wei: ${e}`;
+        throw new Error(message);
+      }
     }
-    catch (e) {
-      const message = `Error depositing ${amount} wei: ${e}`;
-      // this.logger.error(message);
-      throw new Error(message);
+
+    // ERC20 token deposit
+    if (approveDeposit) {
+      // First approve the plasma contract on the erc20 contract
+      const erc20 = new this.web3.eth.Contract(erc20abi, currency);
+      // const approvePromise = Promise.promisify(erc20.approve.sendTransaction)
+
+      // TODO
+      const gasPrice = 1000000;
+      const receipt = await erc20.methods
+        .approve(this.rootChain.plasmaContractAddress, amount)
+        .send({ from: this.address, gasPrice, gas: 2000000 });
+      // Wait for the approve tx to be mined
+      this.logger.info(
+        `${amount} erc20 approved: ${
+          receipt.transactionHash
+        }. Waiting for confirmation...`
+      );
+      await confirmTransaction(this.web3, receipt.transactionHash);
+      this.logger.info(`... ${receipt.transactionHash} confirmed.`);
     }
+
+    return this.rootChain.depositToken(depositTx, { from: this.address });
   }
 
-  async send(toAddress, val) {
-    //const val = "555";
-    // const toAddress = "0x38d5beb778b6e62d82e3ba4633e08987e6d0f990";
+  async transfer(toAddress, amount) {
+    // TODO: Update this to support ERC20's
+    const currency = transaction.ETH_CURRENCY;
+    const verifyingContract = this.plasmaContractAddress;
+
+    const transferZeroFee = currency !== transaction.ETH_CURRENCY;
     const utxos = await this.childChain.getUtxos(this.address);
-    const utxosToSpend = this.selectUtxos(utxos, val, transaction.ETH_CURRENCY);
+    const utxosToSpend = selectUtxos(utxos, amount, currency, transferZeroFee);
     if (!utxosToSpend) {
-      throw new Error(`No utxo big enough to cover the amount ${val}`);
-    }
-    val = new BigNumber(val);
-    if (!val || val.lte(0)) {
-      throw new Error("Transaction value must be more than 0 wei.");
+      throw new Error(`No utxo big enough to cover the amount ${amount}`);
     }
 
     const txBody = {
@@ -145,72 +181,97 @@ export default class BaseEmbarkOmg {
       outputs: [
         {
           owner: toAddress,
-          currency: transaction.ETH_CURRENCY,
-          amount: val
+          currency,
+          amount: amount.toString()
         }
       ]
     };
 
-    const utxoAmnt = new BigNumber(utxosToSpend[0].amount);
-    if (utxoAmnt.gt(val)) {
-      // specify the change amount back to yourself
-      const changeAmnt = utxoAmnt.sub(val);
+    const bnAmount = new BigNumber(utxosToSpend[0].amount);
+    if (bnAmount.gt(new BigNumber(amount))) {
+      // Need to add a 'change' output
+      const CHANGE_AMOUNT = bnAmount.sub(new BigNumber(amount));
       txBody.outputs.push({
         owner: this.address,
-        currency: transaction.ETH_CURRENCY,
-        amount: changeAmnt
+        currency,
+        amount: CHANGE_AMOUNT
       });
     }
 
-    try {
-      const unsignedTx = await this.childChain.createTransaction(txBody);
-
-      const signatures = await this.childChain.signTransaction(unsignedTx);//, [this.addressPrivateKey]);
-
-      const signedTx = await this.childChain.buildSignedTransaction(unsignedTx, signatures);
-
-      const result = await this.childChain.submitTransaction(signedTx);
-
-      const message = `Successfully submitted tx on the child chain: ${JSON.stringify(result)}\nView the transaction: http://quest.ari.omg.network/transaction/${result.txhash}`;
-
-      //this.logger.info(message);
-      return message;
-    }
-    catch (e) {
-      // this.logger.error(e);
-      throw e;
+    if (transferZeroFee && utxosToSpend.length > 1) {
+      // The fee input can be returned
+      txBody.outputs.push({
+        owner: this.address,
+        currency: utxosToSpend[utxosToSpend.length - 1].currency,
+        amount: utxosToSpend[utxosToSpend.length - 1].amount
+      });
     }
+
+    // Get the transaction data
+    const typedData = transaction.getTypedData(txBody, verifyingContract);
+
+    // We should really sign each input separately but in this we know that they're all
+    // from the same address, so we can sign once and use that signature for each input.
+    //
+    // const sigs = await Promise.all(utxosToSpend.map(input => signTypedData(web3, web3.utils.toChecksumAddress(from), typedData)))
+    //
+    const signature = await signTypedData(
+      this.web3,
+      this.web3.utils.toChecksumAddress(this.address),
+      JSON.stringify(typedData)
+    );
+    // const signer = this.web3.utils.toChecksumAddress(this.address);
+    // const data = JSON.stringify(typedData);
+    // const signature = this.web3.currentProvider.send("eth_signTypedData_v3", [
+    //   signer,
+    //   data
+    // ]);
+    const sigs = new Array(utxosToSpend.length).fill(signature);
+
+    // Build the signed transaction
+    const signedTx = this.childChain.buildSignedTransaction(typedData, sigs);
+    // Submit the signed transaction to the childchain
+    const result = await this.childChain.submitTransaction(signedTx);
+
+    const message = `Successfully submitted tx on the child chain: ${JSON.stringify(
+      result
+    )}\nView the transaction: ${this.childChainExplorerUrl}transaction/${
+      result.txhash
+    }`;
+
+    return message;
   }
 
   async exit(fromAddress) {
     const utxos = await this.childChain.getUtxos(fromAddress);
     if (utxos.length <= 0) {
       const message = `No UTXOs found on the Plasma chain for ${fromAddress}.`;
-      this.logger.error(message);
       throw new Error(message);
     }
     // NB This only exits the first UTXO.
     // Selecting _which_ UTXO to exit is left as an exercise for the reader...
     const errors = [];
-    utxos.forEach(async (utxo) => {
+    utxos.forEach(async utxo => {
       const exitData = await this.childChain.getExitData(utxo);
 
       try {
         let receipt = await this.rootChain.startStandardExit(
-          exitData.utxo_pos.toString(),
+          Number(exitData.utxo_pos.toString()),
           exitData.txbytes,
           exitData.proof,
           {
             from: fromAddress
           }
         );
-        const message = `Exited UTXO from address ${fromAddress} with value ${utxo.amount}. View the transaction: https://rinkeby.etherscan.io/tx/${receipt.transactionHash}`;
-        // this.logger.info(message);
-        return message;
-      }
-      catch (e) {
-        const message = `Error exiting the Plasma chain for UTXO ${JSON.stringify(utxo)}: ${e}`;
-        // this.logger.error(message);
+        return `Exited UTXO from address ${fromAddress} with value ${
+          utxo.amount
+        }. View the transaction: https://rinkeby.etherscan.io/tx/${
+          receipt.transactionHash
+        }`;
+      } catch (e) {
+        const message = `Error exiting the Plasma chain for UTXO ${JSON.stringify(
+          utxo
+        )}: ${e}`;
         errors.push(message);
       }
     });
@@ -222,7 +283,9 @@ export default class BaseEmbarkOmg {
   selectUtxos(utxos, amount, currency) {
     const correctCurrency = utxos.filter(utxo => utxo.currency === currency);
     // Just find the first utxo that can fulfill the amount
-    const selected = correctCurrency.find(utxo => new BigNumber(utxo.amount).gte(new BigNumber(amount)));
+    const selected = correctCurrency.find(utxo =>
+      new BigNumber(utxo.amount).gte(new BigNumber(amount))
+    );
     if (selected) {
       return [selected];
     }
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..76c14c3
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,106 @@
+import BigNumber from "bn.js";
+import { transaction } from "@omisego/omg-js-util";
+
+const DEFAULT_INTERVAL = 1000;
+const DEFAULT_BLOCKS_TO_WAIT = 1;
+
+export function confirmTransaction(web3, txnHash, options) {
+  const interval = options && options.interval ? options.interval : DEFAULT_INTERVAL;
+  const blocksToWait = options && options.blocksToWait ? options.blocksToWait : DEFAULT_BLOCKS_TO_WAIT;
+  const transactionReceiptAsync = async function (txnHash, resolve, reject) {
+    try {
+      const receipt = await web3.eth.getTransactionReceipt(txnHash);
+      if (!receipt) {
+        return setTimeout(function () {
+          transactionReceiptAsync(txnHash, resolve, reject);
+        }, interval);
+      }
+      if (blocksToWait > 0) {
+        const resolvedReceipt = await receipt;
+        if (!resolvedReceipt || !resolvedReceipt.blockNumber) {
+          return setTimeout(function () {
+            transactionReceiptAsync(txnHash, resolve, reject);
+          }, interval);
+        }
+        try {
+          const block = await web3.eth.getBlock(resolvedReceipt.blockNumber);
+          const current = await web3.eth.getBlock('latest');
+          if (current.number - block.number >= blocksToWait) {
+            const txn = await web3.eth.getTransaction(txnHash);
+            // eslint-disable-next-line max-depth
+            if (txn.blockNumber !== null) {
+              return resolve(resolvedReceipt);
+            }
+            return reject(new Error('Transaction with hash: ' + txnHash + ' ended up in an uncle block.'));
+          }
+          return setTimeout(function () {
+            transactionReceiptAsync(txnHash, resolve, reject);
+          }, interval);
+        } catch (e) {
+          setTimeout(function () {
+            transactionReceiptAsync(txnHash, resolve, reject);
+          }, interval);
+        }
+      } else resolve(receipt);
+
+    } catch (e) {
+      reject(e);
+    }
+  };
+  if (Array.isArray(txnHash)) {
+    const promises = [];
+    txnHash.forEach(function (oneTxHash) {
+      promises.push(confirmTransaction(web3, oneTxHash, options));
+    });
+    return Promise.all(promises);
+  }
+  return new Promise(function (resolve, reject) {
+    transactionReceiptAsync(txnHash, resolve, reject);
+  });
+}
+
+export function selectUtxos(utxos, amount, currency, includeFee) {
+  // Filter by desired currency and sort in descending order
+  const sorted = utxos
+    .filter(utxo => utxo.currency === currency)
+    .sort((a, b) => new BigNumber(b.amount).sub(new BigNumber(a.amount)));
+
+  if (sorted) {
+    const selected = [];
+    let currentBalance = new BigNumber(0);
+    for (let i = 0; i < Math.min(sorted.length, 4); i++) {
+      selected.push(sorted[i]);
+      currentBalance.iadd(new BigNumber(sorted[i].amount));
+      if (currentBalance.gte(new BigNumber(amount))) {
+        break;
+      }
+    }
+
+    if (currentBalance.gte(new BigNumber(amount))) {
+      if (includeFee) {
+        // Find the first ETH utxo (that's not selected)
+        const ethUtxos = utxos.filter(
+          utxo => utxo.currency === transaction.ETH_CURRENCY
+        );
+        const feeUtxo = ethUtxos.find(utxo => utxo !== selected);
+        if (!feeUtxo) {
+          throw new Error(`Can't find a fee utxo for transaction`);
+        } else {
+          selected.push(feeUtxo);
+        }
+      }
+      return selected;
+    }
+  }
+}
+
+export function signTypedData (web3, signer, data) {
+  return web3.currentProvider.send('eth_signTypedData_v3', [signer, data]);
+}
+
+export function normalizeUrl (url) {
+  if(!url.endsWith("/")) {
+    url += "/";
+  }
+  return url;
+}
diff --git a/yarn.lock b/yarn.lock
index 2bc6a2a..6a66c73 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -694,29 +694,29 @@
     lodash "^4.17.11"
     to-fast-properties "^2.0.0"
 
-"@omisego/omg-js-childchain@1.2.1", "@omisego/omg-js-childchain@^1.2.1":
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/@omisego/omg-js-childchain/-/omg-js-childchain-1.2.1.tgz#7fd83af2e47ae7936fd9743c5a98244c89f64222"
-  integrity sha512-UuYc0w8xTZPceDUnuWXV46MhPMUmu9+ecTbEh0sd5YSx9N9ie+t2FRikvvTH9g4+GBmQRoI0XCkFBU/pW3SJkA==
+"@omisego/omg-js-childchain@2.0.0-v0.2", "@omisego/omg-js-childchain@^2.0.0-v0.2":
+  version "2.0.0-v0.2"
+  resolved "https://registry.yarnpkg.com/@omisego/omg-js-childchain/-/omg-js-childchain-2.0.0-v0.2.tgz#d2c2e1af48a8c00a68902db6107e1da824701b86"
+  integrity sha512-hz9U2xPg/xFbdBxUIqXfDjfA8JKIegMnG757d6b3h3Ot2kGvPL+0GK59JoMYwOG64J5uaco5HZ7NnnGfjQ5Aqw==
   dependencies:
-    "@omisego/omg-js-util" "^1.2.1"
+    "@omisego/omg-js-util" "^2.0.0-v0.2"
     debug "^4.0.1"
     json-bigint "^0.3.0"
     node-fetch "^2.2.0"
     rlp "^2.1.0"
 
-"@omisego/omg-js-rootchain@1.2.2", "@omisego/omg-js-rootchain@^1.2.2":
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/@omisego/omg-js-rootchain/-/omg-js-rootchain-1.2.2.tgz#630ad267f0ad6b2e44098790be9acb8816413032"
-  integrity sha512-vgyVfUDnyVeoe0XUv7hM13kHXqdJyEghqHEV07GyTr69QfzbFfTe9jzMceLAb5f+4Y/E5gLgU1Vqlt7lNGctUQ==
+"@omisego/omg-js-rootchain@2.0.0-v0.2", "@omisego/omg-js-rootchain@^2.0.0-v0.2":
+  version "2.0.0-v0.2"
+  resolved "https://registry.yarnpkg.com/@omisego/omg-js-rootchain/-/omg-js-rootchain-2.0.0-v0.2.tgz#05ebbe6ee4e583a25f26c041a8d52b1084857b8c"
+  integrity sha512-QRsipPvozaImfO8ifPOh9w/GmOHT9hr9mdBWtRtZ3AqBOru10QG9gHF9vSQTsCDjr0jsAnoqHC/s/wuuDVfvbg==
   dependencies:
-    "@omisego/omg-js-util" "^1.2.1"
+    "@omisego/omg-js-util" "^2.0.0-v0.2"
     debug "^4.0.1"
 
-"@omisego/omg-js-util@1.2.1", "@omisego/omg-js-util@^1.2.1":
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/@omisego/omg-js-util/-/omg-js-util-1.2.1.tgz#7495f6835681a3096cc54dabb8c0495bc37d22ec"
-  integrity sha512-14YTB/hycMSgGnZ/SLKiu0KA9qqwc7mTvyGfO6VE2DonX6uDrYRqmbWX0wDnk3A1hWoVLPiqG7CLBNbkOnhsKg==
+"@omisego/omg-js-util@2.0.0-v0.2", "@omisego/omg-js-util@^2.0.0-v0.2":
+  version "2.0.0-v0.2"
+  resolved "https://registry.yarnpkg.com/@omisego/omg-js-util/-/omg-js-util-2.0.0-v0.2.tgz#30b5882cc8a45446e7206576240caade614c8590"
+  integrity sha512-J5J5Q2XC7ZkpfQJiXJxii/66Tn3x4rhnhky3BmL++XEBoK6I34wgWMs/7dzsejWNHmmhGv/M/OZb+QBI+HlvlA==
   dependencies:
     eth-sig-util "^2.1.1"
     ethereumjs-util "^6.0.0"
@@ -724,19 +724,14 @@
     number-to-bn "^1.7.0"
     rlp "^2.2.2"
 
-"@omisego/omg-js@1.2.2":
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/@omisego/omg-js/-/omg-js-1.2.2.tgz#3d7b8a179953307f1d34a321730572760f21b4e0"
-  integrity sha512-nnaL80FEtv+4yAocXV9qyJr3yNOGKdVNFiB2ehIdHuEx3YTy5yPc7+E4RqQSYcCm3iev7GdxTtSd9bSXGZ2lNQ==
+"@omisego/omg-js@2.0.0-v0.2":
+  version "2.0.0-v0.2"
+  resolved "https://registry.yarnpkg.com/@omisego/omg-js/-/omg-js-2.0.0-v0.2.tgz#cd50f0e2ccc4beca75b0e01b9b1ad2a126ec3103"
+  integrity sha512-eMAjn50+bX2uyzghlyXbSFV/2tcAA5wqD8Q3pZTXvUT9U6QZBcfsu6fUTV56vNJT8KqAdCl2Rma3PKeB80IB9Q==
   dependencies:
-    "@omisego/omg-js-childchain" "^1.2.1"
-    "@omisego/omg-js-rootchain" "^1.2.2"
-    "@omisego/omg-js-util" "^1.2.1"
-
-"@types/node@^10.3.2":
-  version "10.14.7"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.14.7.tgz#1854f0a9aa8d2cd6818d607b3d091346c6730362"
-  integrity sha512-on4MmIDgHXiuJDELPk1NFaKVUxxCFr37tm8E9yN6rAiF5Pzp/9bBfBHkoexqRiY+hk/Z04EJU9kKEb59YqJ82A==
+    "@omisego/omg-js-childchain" "^2.0.0-v0.2"
+    "@omisego/omg-js-rootchain" "^2.0.0-v0.2"
+    "@omisego/omg-js-util" "^2.0.0-v0.2"
 
 abbrev@1:
   version "1.1.1"
@@ -760,11 +755,6 @@ acorn@^5.5.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
   integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
 
-aes-js@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.0.0.tgz#e21df10ad6c2053295bcbb8dab40b09dbea87e4d"
-  integrity sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0=
-
 ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
@@ -880,24 +870,11 @@ async-each@^1.0.1:
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.3.tgz#b727dbf87d7651602f06f4d4ac387f47d91b0cbf"
   integrity sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==
 
-async@3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/async/-/async-3.0.1.tgz#dfeb34657d1e63c94c0eee424297bf8a2c9a8182"
-  integrity sha512-ZswD8vwPtmBZzbn9xyi8XBQWXH3AvOQ43Za1KWYq7JeycrZuUYzx01KvHcVbXltjqH4y0MWrQ33008uLTqXuDw==
-
 atob@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
-axios@0.19.0:
-  version "0.19.0"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.19.0.tgz#8e09bff3d9122e133f7b8101c8fbdd00ed3d2ab8"
-  integrity sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==
-  dependencies:
-    follow-redirects "1.5.10"
-    is-buffer "^2.0.2"
-
 babel-code-frame@^6.22.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
@@ -1348,13 +1325,6 @@ cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-debug@=3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
-  dependencies:
-    ms "2.0.0"
-
 debug@^2.2.0, debug@^2.3.3:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
@@ -1451,16 +1421,6 @@ electron-to-chromium@^1.3.137:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.139.tgz#17a149701d934bbb91d2aa4ae09e5270c38dc0ff"
   integrity sha512-8cR7h6doIC/XLgPdsTM3BXpfWLzqrHS6jWrvWLsdZWZWFvVQQUJTbU/wUZsjRGK33OY5ZIiS1n6JbqowuWrmYg==
 
-elliptic@6.3.3:
-  version "6.3.3"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.3.3.tgz#5482d9646d54bcb89fd7d994fc9e2e9568876e3f"
-  integrity sha1-VILZZG1UvLif19mU/J4ulWiHbj8=
-  dependencies:
-    bn.js "^4.4.0"
-    brorand "^1.0.1"
-    hash.js "^1.0.0"
-    inherits "^2.0.1"
-
 elliptic@^6.4.0, elliptic@^6.4.1:
   version "6.4.1"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.1.tgz#c2d0b7776911b86722c632c3c06c60f2f819939a"
@@ -1658,22 +1618,6 @@ ethereumjs-util@^6.0.0:
     safe-buffer "^5.1.1"
     secp256k1 "^3.0.1"
 
-ethers@4.0.28:
-  version "4.0.28"
-  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.28.tgz#74d9acb57f4ede3337c8d60476b38d0fe646af01"
-  integrity sha512-5JTHrPoFLqf+xCAI3pKwXSOgWBSJJoAUdPtPLr1ZlKbSKiIFMkPlRNovmZS3jhIw5sHW1YoVWOaJ6ZR2gKRbwg==
-  dependencies:
-    "@types/node" "^10.3.2"
-    aes-js "3.0.0"
-    bn.js "^4.4.0"
-    elliptic "6.3.3"
-    hash.js "1.1.3"
-    js-sha3 "0.5.7"
-    scrypt-js "2.0.4"
-    setimmediate "1.0.4"
-    uuid "2.0.1"
-    xmlhttprequest "1.8.0"
-
 ethjs-util@0.1.6, ethjs-util@^0.1.3:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/ethjs-util/-/ethjs-util-0.1.6.tgz#f308b62f185f9fe6237132fb2a9818866a5cd536"
@@ -1796,13 +1740,6 @@ flat-cache@^1.2.1:
     rimraf "~2.6.2"
     write "^0.2.1"
 
-follow-redirects@1.5.10:
-  version "1.5.10"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.5.10.tgz#7b7a9f9aea2fdff36786a94ff643ed07f4ff5e2a"
-  integrity sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==
-  dependencies:
-    debug "=3.1.0"
-
 for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -1967,14 +1904,6 @@ hash-base@^3.0.0:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
-hash.js@1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.3.tgz#340dedbe6290187151c1ea1d777a3448935df846"
-  integrity sha512-/UETyP0W22QILqS+6HowevwhEFJ3MBJnwTf75Qob9Wz9t0DPuisL8kW8YZMK62dHAKE1c1p+gY1TtOLY+USEHA==
-  dependencies:
-    inherits "^2.0.3"
-    minimalistic-assert "^1.0.0"
-
 hash.js@^1.0.0, hash.js@^1.0.3:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
@@ -2110,11 +2039,6 @@ is-buffer@^1.1.5:
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
   integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
 
-is-buffer@^2.0.2:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.3.tgz#4ecf3fcf749cbd1e472689e109ac66261a25e725"
-  integrity sha512-U15Q7MXTuZlrbymiz95PJpZxu8IlipAp4dtS3wOdgPXx3mqBnslrWU14kxfHB+Py/+2PVKSr37dMAgM2A4uArw==
-
 is-callable@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
@@ -2285,11 +2209,6 @@ js-levenshtein@^1.1.3:
   resolved "https://registry.yarnpkg.com/js-levenshtein/-/js-levenshtein-1.1.6.tgz#c6cee58eb3550372df8deb85fad5ce66ce01d59d"
   integrity sha512-X2BB11YZtrRqY4EnQcLX5Rh373zbK4alC1FW7D7MBhL2gtcC17cTnr6DmfHZeS0s2rTHjUTMMHfG7gO8SSdw+g==
 
-js-sha3@0.5.7:
-  version "0.5.7"
-  resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.5.7.tgz#0d4ffd8002d5333aabaf4a23eed2f6374c9f28e7"
-  integrity sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc=
-
 js-sha3@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.6.1.tgz#5b89f77a7477679877f58c4a075240934b1f95c0"
@@ -3158,11 +3077,6 @@ sax@^1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
-scrypt-js@2.0.4:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.4.tgz#32f8c5149f0797672e551c07e230f834b6af5f16"
-  integrity sha512-4KsaGcPnuhtCZQCxFxN3GVYIhKFPTdLd8PLC552XwbMndtD0cjRFAhDuuydXQ0h08ZfPgzqe6EKHozpuH74iDw==
-
 secp256k1@^3.0.1:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.7.0.tgz#e85972f847b586cc4b2acd69497d3f80afaa7505"
@@ -3212,11 +3126,6 @@ set-value@^2.0.0:
     is-plain-object "^2.0.3"
     split-string "^3.0.1"
 
-setimmediate@1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.4.tgz#20e81de622d4a02588ce0c8da8973cbcf1d3138f"
-  integrity sha1-IOgd5iLUoCWIzgyNqJc8vPHTE48=
-
 sha.js@^2.4.0, sha.js@^2.4.8:
   version "2.4.11"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.11.tgz#37a5cf0b81ecbc6943de109ba2960d1b26584ae7"
@@ -3604,11 +3513,6 @@ util-deprecate@~1.0.1:
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
   integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
 
-uuid@2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.1.tgz#c2a30dedb3e535d72ccf82e343941a50ba8533ac"
-  integrity sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w=
-
 validate-npm-package-license@^3.0.1:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
@@ -3648,11 +3552,6 @@ write@^0.2.1:
   dependencies:
     mkdirp "^0.5.1"
 
-xmlhttprequest@1.8.0:
-  version "1.8.0"
-  resolved "https://registry.yarnpkg.com/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz#67fe075c5c24fef39f9d65f5f7b7fe75171968fc"
-  integrity sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw=
-
 yallist@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"

From 46fb2903b708f482b1c2b0c67fb28f1e5d4995b4 Mon Sep 17 00:00:00 2001
From: emizzle <eric.mastro@gmail.com>
Date: Thu, 13 Jun 2019 18:28:44 +1000
Subject: [PATCH 3/4] Cleanup, start adding helper funcs (WIP)

---
 package.json |   3 +-
 src/index.js | 148 ++++++++++++++++++++++-----------------------------
 yarn.lock    |   5 ++
 3 files changed, 71 insertions(+), 85 deletions(-)

diff --git a/package.json b/package.json
index 6d49a46..306a85c 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,8 @@
     "@omisego/omg-js": "2.0.0-v0.2",
     "@omisego/omg-js-childchain": "2.0.0-v0.2",
     "@omisego/omg-js-rootchain": "2.0.0-v0.2",
-    "@omisego/omg-js-util": "2.0.0-v0.2"
+    "@omisego/omg-js-util": "2.0.0-v0.2",
+    "human-standard-token-abi": "2.0.0"
   },
   "devDependencies": {
     "@babel/cli": "7.2.3",
diff --git a/src/index.js b/src/index.js
index d4a3d33..8d32ebf 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,4 +1,3 @@
-/* global web3, ethereum */
 import {
   confirmTransaction,
   normalizeUrl,
@@ -9,6 +8,7 @@ import BigNumber from "bn.js";
 import ChildChain from "@omisego/omg-js-childchain";
 import RootChain from "@omisego/omg-js-rootchain";
 import { transaction } from "@omisego/omg-js-util";
+const erc20abi = require("human-standard-token-abi");
 
 const web3Options = { transactionConfirmationBlocks: 1 };
 
@@ -17,70 +17,43 @@ export default class BaseEmbarkOmg {
     this.logger = logger;
     this.initing = false;
     this.inited = false;
-    this.address = "";
-    this.addressPrivateKey = "";
+    this.account = {
+      address: "",
+      rootBalance: 0,
+      childBalance: 0
+    };
+    this.account.addressPrivateKey = "";
     this.maxDeposit = 0;
 
     // plugin opts
-    this.plasmaContractAddress =
-      pluginConfig.PLASMA_CONTRACT_ADDRESS ||
-      "0x740ecec4c0ee99c285945de8b44e9f5bfb71eea7";
-    this.watcherUrl = normalizeUrl(
-      pluginConfig.WATCHER_URL || "https://watchersamrong.omg.network/"
-    );
-    this.childChainUrl = normalizeUrl(
-      pluginConfig.CHILDCHAIN_URL || "https://samrong.omg.network/"
-    );
-    this.childChainExplorerUrl = normalizeUrl(
-      pluginConfig.CHILDCHAIN_EXPLORER_URL ||
-        "https://quest.samrong.omg.network"
-    );
-  }
-
-  async initWeb3() {
-    if (window.ethereum) {
-      this.web3 = new Web3(window.ethereum, null, web3Options);
-      try {
-        // Request account access
-        await ethereum.enable();
-        return true;
-      } catch (err) {
-        // User denied account access :(
-        console.error(err);
-      }
-    } else if (window.web3) {
-      this.web3 = new Web3(window.web3.currentProvider, null, web3Options);
-      return true;
-    }
-    // No web3...
-    return false;
+    this.plasmaContractAddress = pluginConfig.PLASMA_CONTRACT_ADDRESS || "0x740ecec4c0ee99c285945de8b44e9f5bfb71eea7";
+    this.watcherUrl = normalizeUrl(pluginConfig.WATCHER_URL || "https://watcher.samrong.omg.network/");
+    this.childChainUrl = normalizeUrl(pluginConfig.CHILDCHAIN_URL || "https://samrong.omg.network/");
+    this.childChainExplorerUrl = normalizeUrl(pluginConfig.CHILDCHAIN_EXPLORER_URL || "https://quest.samrong.omg.network");
   }
 
   async init(web3) {
-    //}, web3Path) {
-
     try {
       if (this.initing) {
         const message = "Already intializing the Plasma chain, please wait...";
         throw new Error(message);
       }
       this.initing = true;
+      this.web3 = web3;
 
-      // if (!(await this.initWeb3())) {
-        this.web3 = web3;
-      // }
       let accounts = await this.web3.eth.getAccounts();
-      this.address = accounts.length > 1 ? accounts[1] : accounts[0]; // ignore the first account because it is our deployer account, we want the manually added account
+      const address = accounts.length > 1 ? accounts[1] : accounts[0]; // ignore the first account because it is our deployer account, we want the manually added account
+      this.account.address = address;
       // check account balance on the main chain
       // try {
-      //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
+      //   this.maxDeposit = await this.web3.eth.getBalance(this.account.address);
       //   if (!this.maxDeposit || new BigNumber(this.maxDeposit).lte(0)) {
       //     throw new Error("The configured account does not have enough funds. Please make sure this account has Rinkeby ETH.");
       //   }
       //   this.maxDeposit = new BigNumber(this.maxDeposit);
       // }
       // catch (e) {
-      //   this.logger.warn(`Error getting balance for account ${this.address}: ${e}`);
+      //   this.logger.warn(`Error getting balance for account ${this.account.address}: ${e}`);
       // }
 
       // set up the Plasma chain
@@ -113,26 +86,24 @@ export default class BaseEmbarkOmg {
     }
     // if (amount.gt(this.maxDeposit) && this.maxDeposit.gt(0)) {
     //   // recheck balance in case it was updated in a recent tx
-    //   this.maxDeposit = await this.web3.eth.getBalance(this.address);
+    //   this.maxDeposit = await this.web3.eth.getBalance(this.account.address);
     //   if (amount.gt(this.maxDeposit)) {
-    //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.address} and then try again.`;
+    //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.account.address} and then try again.`;
     //     throw new Error(message);
     //   }
     // }
     // Create the deposit transaction
-    const depositTx = transaction.encodeDeposit(this.address, amount, currency);
+    const depositTx = transaction.encodeDeposit(this.account.address, amount, currency);
 
     if (currency === transaction.ETH_CURRENCY) {
       this.logger.info(`Depositing ${amount} wei...`);
       // ETH deposit
       try {
-        const receipt = await this.rootChain.depositEth(depositTx, amount, {
-          from: this.address
-        });
+        const receipt = await this.rootChain.depositEth(depositTx, amount, { from: this.account.address });
         this.logger.trace(receipt);
         const message = `Successfully deposited ${amount} wei in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${
           receipt.transactionHash
-        }`;
+          }`;
         return message;
       } catch (e) {
         const message = `Error depositing ${amount} wei: ${e}`;
@@ -150,18 +121,14 @@ export default class BaseEmbarkOmg {
       const gasPrice = 1000000;
       const receipt = await erc20.methods
         .approve(this.rootChain.plasmaContractAddress, amount)
-        .send({ from: this.address, gasPrice, gas: 2000000 });
+        .send({ from: this.account.address, gasPrice, gas: 2000000 });
       // Wait for the approve tx to be mined
-      this.logger.info(
-        `${amount} erc20 approved: ${
-          receipt.transactionHash
-        }. Waiting for confirmation...`
-      );
+      this.logger.info(`${amount} erc20 approved: ${receipt.transactionHash}. Waiting for confirmation...`);
       await confirmTransaction(this.web3, receipt.transactionHash);
       this.logger.info(`... ${receipt.transactionHash} confirmed.`);
     }
 
-    return this.rootChain.depositToken(depositTx, { from: this.address });
+    return this.rootChain.depositToken(depositTx, { from: this.account.address });
   }
 
   async transfer(toAddress, amount) {
@@ -169,9 +136,7 @@ export default class BaseEmbarkOmg {
     const currency = transaction.ETH_CURRENCY;
     const verifyingContract = this.plasmaContractAddress;
 
-    const transferZeroFee = currency !== transaction.ETH_CURRENCY;
-    const utxos = await this.childChain.getUtxos(this.address);
-    const utxosToSpend = selectUtxos(utxos, amount, currency, transferZeroFee);
+    const utxosToSpend = await selectUtxos(amount, currency);
     if (!utxosToSpend) {
       throw new Error(`No utxo big enough to cover the amount ${amount}`);
     }
@@ -192,16 +157,16 @@ export default class BaseEmbarkOmg {
       // Need to add a 'change' output
       const CHANGE_AMOUNT = bnAmount.sub(new BigNumber(amount));
       txBody.outputs.push({
-        owner: this.address,
+        owner: this.account.address,
         currency,
         amount: CHANGE_AMOUNT
       });
     }
 
-    if (transferZeroFee && utxosToSpend.length > 1) {
+    if (currency !== transaction.ETH_CURRENCY && utxosToSpend.length > 1) {
       // The fee input can be returned
       txBody.outputs.push({
-        owner: this.address,
+        owner: this.account.address,
         currency: utxosToSpend[utxosToSpend.length - 1].currency,
         amount: utxosToSpend[utxosToSpend.length - 1].amount
       });
@@ -217,15 +182,10 @@ export default class BaseEmbarkOmg {
     //
     const signature = await signTypedData(
       this.web3,
-      this.web3.utils.toChecksumAddress(this.address),
+      this.web3.utils.toChecksumAddress(this.account.address),
       JSON.stringify(typedData)
     );
-    // const signer = this.web3.utils.toChecksumAddress(this.address);
-    // const data = JSON.stringify(typedData);
-    // const signature = this.web3.currentProvider.send("eth_signTypedData_v3", [
-    //   signer,
-    //   data
-    // ]);
+
     const sigs = new Array(utxosToSpend.length).fill(signature);
 
     // Build the signed transaction
@@ -237,7 +197,7 @@ export default class BaseEmbarkOmg {
       result
     )}\nView the transaction: ${this.childChainExplorerUrl}transaction/${
       result.txhash
-    }`;
+      }`;
 
     return message;
   }
@@ -248,8 +208,6 @@ export default class BaseEmbarkOmg {
       const message = `No UTXOs found on the Plasma chain for ${fromAddress}.`;
       throw new Error(message);
     }
-    // NB This only exits the first UTXO.
-    // Selecting _which_ UTXO to exit is left as an exercise for the reader...
     const errors = [];
     utxos.forEach(async utxo => {
       const exitData = await this.childChain.getExitData(utxo);
@@ -265,9 +223,9 @@ export default class BaseEmbarkOmg {
         );
         return `Exited UTXO from address ${fromAddress} with value ${
           utxo.amount
-        }. View the transaction: https://rinkeby.etherscan.io/tx/${
+          }. View the transaction: https://rinkeby.etherscan.io/tx/${
           receipt.transactionHash
-        }`;
+          }`;
       } catch (e) {
         const message = `Error exiting the Plasma chain for UTXO ${JSON.stringify(
           utxo
@@ -280,14 +238,36 @@ export default class BaseEmbarkOmg {
     }
   }
 
-  selectUtxos(utxos, amount, currency) {
-    const correctCurrency = utxos.filter(utxo => utxo.currency === currency);
-    // Just find the first utxo that can fulfill the amount
-    const selected = correctCurrency.find(utxo =>
-      new BigNumber(utxo.amount).gte(new BigNumber(amount))
-    );
-    if (selected) {
-      return [selected];
-    }
+  async selectUtxos(amount, currency) {
+    const transferZeroFee = currency !== transaction.ETH_CURRENCY;
+    const utxos = await this.childChain.getUtxos(this.account.address);
+    return selectUtxos(utxos, amount, currency, transferZeroFee);
+  }
+
+  async getTransactions() {
+    return this.childChain.getTransactions({
+      address: this.account.address
+    });
+  }
+
+  async getBalances() {
+    this.account.rootBalance = await this.web3.eth.getBalance(this.account.address);
+
+    const childchainBalance = await this.childChain.getBalance(this.account.address);
+    this.account.childBalance = await Promise.all(childchainBalance.map(
+      async (balance) => {
+        if (balance.currency === transaction.ETH_CURRENCY) {
+          balance.symbol = 'wei';
+        } else {
+          const tokenContract = new this.web3.eth.Contract(erc20abi, balance.currency);
+          try {
+            balance.symbol = await tokenContract.methods.symbol().call();
+          } catch (err) {
+            balance.symbol = 'Unknown ERC20';
+          }
+        }
+        return balance;
+      }
+    ))
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 6a66c73..369773a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1926,6 +1926,11 @@ hosted-git-info@^2.1.4:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
   integrity sha512-7T/BxH19zbcCTa8XkMlbK5lTo1WtgkFi3GvdWEyNuc4Vex7/9Dqbnpsf4JMydcfj9HCg4zUWFTL3Za6lapg5/w==
 
+human-standard-token-abi@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/human-standard-token-abi/-/human-standard-token-abi-2.0.0.tgz#e0c2057596d0a1d4a110f91f974a37f4b904f008"
+  integrity sha512-m1f5DiIvqaNmpgphNqx2OziyTCj4Lvmmk28uMSxGWrOc9/lMpAKH8UcMPhvb13DMNZPzxn07WYFhxOGKuPLryg==
+
 iconv-lite@^0.4.17, iconv-lite@^0.4.4:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"

From 7dfe7df6b44b00053dff5fb0dadea0cd2ab58129 Mon Sep 17 00:00:00 2001
From: emizzle <eric.mastro@gmail.com>
Date: Mon, 17 Jun 2019 12:35:55 +1000
Subject: [PATCH 4/4] Refactor to include state and web3

web3 was added as a specific version is needed to support EIP-712.

Refactor to include plugin state for consumption on the frontend.
---
 package.json |   9 +-
 src/index.js | 175 ++++++++-----
 src/utils.js |   8 +-
 yarn.lock    | 685 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 4 files changed, 797 insertions(+), 80 deletions(-)

diff --git a/package.json b/package.json
index 306a85c..7201d20 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
-  "name": "embarkjs-omg",
+  "name": "embarkjs-plasma",
   "version": "1.0.0",
-  "description": "EmbarkJS library for the OmiseGO plugin for Embark",
+  "description": "EmbarkJS library for the OmiseGO Plasma plugin for Embark",
   "main": "dist/index.js",
   "browser": {
     "./dist/index.js": "./dist/browser/index.js",
@@ -54,7 +54,8 @@
     "@omisego/omg-js-childchain": "2.0.0-v0.2",
     "@omisego/omg-js-rootchain": "2.0.0-v0.2",
     "@omisego/omg-js-util": "2.0.0-v0.2",
-    "human-standard-token-abi": "2.0.0"
+    "human-standard-token-abi": "2.0.0",
+    "web3": "1.0.0-beta.55"
   },
   "devDependencies": {
     "@babel/cli": "7.2.3",
@@ -77,4 +78,4 @@
     "npm": ">=6.4.1",
     "yarn": ">=1.12.3"
   }
-}
+}
\ No newline at end of file
diff --git a/src/index.js b/src/index.js
index 8d32ebf..5d729e2 100644
--- a/src/index.js
+++ b/src/index.js
@@ -7,73 +7,86 @@ import {
 import BigNumber from "bn.js";
 import ChildChain from "@omisego/omg-js-childchain";
 import RootChain from "@omisego/omg-js-rootchain";
-import { transaction } from "@omisego/omg-js-util";
-const erc20abi = require("human-standard-token-abi");
+import Web3 from "web3";
+import {transaction} from "@omisego/omg-js-util";
+const ERC20_ABI = require("human-standard-token-abi");
 
-const web3Options = { transactionConfirmationBlocks: 1 };
+const web3Options = {transactionConfirmationBlocks: 1};
 
-export default class BaseEmbarkOmg {
-  constructor({ pluginConfig, logger }) {
+export default class EmbarkJSPlasma {
+  constructor({pluginConfig, logger}) {
     this.logger = logger;
     this.initing = false;
     this.inited = false;
-    this.account = {
-      address: "",
-      rootBalance: 0,
-      childBalance: 0
-    };
-    this.account.addressPrivateKey = "";
+    this.currentAddress = "";
     this.maxDeposit = 0;
+    this.state = {
+      account: {
+        address: "",
+        rootBalance: 0,
+        childBalance: 0
+      },
+      transactions: [],
+      utxos: []
+    };
+    this.rootChain = null;
+    this.childChain = null;
 
     // plugin opts
-    this.plasmaContractAddress = pluginConfig.PLASMA_CONTRACT_ADDRESS || "0x740ecec4c0ee99c285945de8b44e9f5bfb71eea7";
-    this.watcherUrl = normalizeUrl(pluginConfig.WATCHER_URL || "https://watcher.samrong.omg.network/");
-    this.childChainUrl = normalizeUrl(pluginConfig.CHILDCHAIN_URL || "https://samrong.omg.network/");
-    this.childChainExplorerUrl = normalizeUrl(pluginConfig.CHILDCHAIN_EXPLORER_URL || "https://quest.samrong.omg.network");
+    this.config = {
+      plasmaContractAddress: pluginConfig.PLASMA_CONTRACT_ADDRESS || "0x740ecec4c0ee99c285945de8b44e9f5bfb71eea7",
+      watcherUrl: normalizeUrl(pluginConfig.WATCHER_URL || "https://watcher.samrong.omg.network/"),
+      childChainUrl: normalizeUrl(pluginConfig.CHILDCHAIN_URL || "https://samrong.omg.network/"),
+      childChainExplorerUrl: normalizeUrl(pluginConfig.CHILDCHAIN_EXPLORER_URL || "https://quest.samrong.omg.network")
+    };
   }
 
-  async init(web3) {
+  async init(web3, useGivenWeb3 = false) {
     try {
       if (this.initing) {
         const message = "Already intializing the Plasma chain, please wait...";
         throw new Error(message);
       }
       this.initing = true;
-      this.web3 = web3;
+      if (useGivenWeb3) {
+        this.web3 = web3;
+      }
+      else {
+        this.web3 = new Web3(web3.currentProvider, null, web3Options);
+      }
+
+      // set up the Plasma chain
+      this.rootChain = new RootChain(this.web3, this.config.plasmaContractAddress);
+      this.childChain = new ChildChain(this.config.watcherUrl); //, this.config.childChainUrl);
 
       let accounts = await this.web3.eth.getAccounts();
       const address = accounts.length > 1 ? accounts[1] : accounts[0]; // ignore the first account because it is our deployer account, we want the manually added account
-      this.account.address = address;
+      this.currentAddress = address;
+
       // check account balance on the main chain
       // try {
-      //   this.maxDeposit = await this.web3.eth.getBalance(this.account.address);
+      //   this.maxDeposit = await this.web3.eth.getBalance(this.currentAddress);
       //   if (!this.maxDeposit || new BigNumber(this.maxDeposit).lte(0)) {
       //     throw new Error("The configured account does not have enough funds. Please make sure this account has Rinkeby ETH.");
       //   }
       //   this.maxDeposit = new BigNumber(this.maxDeposit);
       // }
       // catch (e) {
-      //   this.logger.warn(`Error getting balance for account ${this.account.address}: ${e}`);
+      //   this.logger.warn(`Error getting balance for account ${this.currentAddress}: ${e}`);
       // }
 
-      // set up the Plasma chain
-      this.rootChain = new RootChain(this.web3, this.plasmaContractAddress);
-      this.childChain = new ChildChain(this.watcherUrl); //, this.childChainUrl);
-
       // set lifecycle state vars
       this.initing = false;
       this.inited = true;
+
+      await this.updateState();
     } catch (e) {
       const message = `Error initializing Plasma chain: ${e}`;
       throw new Error(message);
     }
   }
 
-  async deposit(amount) {
-    // TODO: Update this to support ERC-20's
-    const currency = transaction.ETH_CURRENCY;
-    const approveDeposit = false;
-    const erc20abi = {};
+  async deposit(amount, currency = transaction.ETH_CURRENCY, approveDeposit = false) {
 
     if (!this.inited) {
       const message = "Please wait for the Plasma chain to initialize...";
@@ -86,24 +99,22 @@ export default class BaseEmbarkOmg {
     }
     // if (amount.gt(this.maxDeposit) && this.maxDeposit.gt(0)) {
     //   // recheck balance in case it was updated in a recent tx
-    //   this.maxDeposit = await this.web3.eth.getBalance(this.account.address);
+    //   this.maxDeposit = await this.web3.eth.getBalance(this.currentAddress);
     //   if (amount.gt(this.maxDeposit)) {
-    //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.account.address} and then try again.`;
+    //     const message = `You do not have enough funds for this deposit. Please deposit more funds in to ${this.currentAddress} and then try again.`;
     //     throw new Error(message);
     //   }
     // }
     // Create the deposit transaction
-    const depositTx = transaction.encodeDeposit(this.account.address, amount, currency);
+    const depositTx = transaction.encodeDeposit(this.currentAddress, amount, currency);
 
     if (currency === transaction.ETH_CURRENCY) {
       this.logger.info(`Depositing ${amount} wei...`);
       // ETH deposit
       try {
-        const receipt = await this.rootChain.depositEth(depositTx, amount, { from: this.account.address });
+        const receipt = await this.rootChain.depositEth(depositTx, amount, {from: this.currentAddress});
         this.logger.trace(receipt);
-        const message = `Successfully deposited ${amount} wei in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${
-          receipt.transactionHash
-          }`;
+        const message = `Successfully deposited ${amount} ${currency === transaction.ETH_CURRENCY ? "wei" : currency} in to the Plasma chain.\nView the transaction: https://rinkeby.etherscan.io/tx/${receipt.transactionHash}`;
         return message;
       } catch (e) {
         const message = `Error depositing ${amount} wei: ${e}`;
@@ -114,29 +125,31 @@ export default class BaseEmbarkOmg {
     // ERC20 token deposit
     if (approveDeposit) {
       // First approve the plasma contract on the erc20 contract
-      const erc20 = new this.web3.eth.Contract(erc20abi, currency);
+      const erc20 = new this.web3.eth.Contract(ERC20_ABI, currency);
       // const approvePromise = Promise.promisify(erc20.approve.sendTransaction)
 
       // TODO
       const gasPrice = 1000000;
       const receipt = await erc20.methods
         .approve(this.rootChain.plasmaContractAddress, amount)
-        .send({ from: this.account.address, gasPrice, gas: 2000000 });
+        .send({from: this.currentAddress, gasPrice, gas: 2000000});
       // Wait for the approve tx to be mined
       this.logger.info(`${amount} erc20 approved: ${receipt.transactionHash}. Waiting for confirmation...`);
       await confirmTransaction(this.web3, receipt.transactionHash);
       this.logger.info(`... ${receipt.transactionHash} confirmed.`);
     }
 
-    return this.rootChain.depositToken(depositTx, { from: this.account.address });
+    return this.rootChain.depositToken(depositTx, {from: this.currentAddress});
   }
 
-  async transfer(toAddress, amount) {
-    // TODO: Update this to support ERC20's
-    const currency = transaction.ETH_CURRENCY;
-    const verifyingContract = this.plasmaContractAddress;
+  async transfer(toAddress, amount, currency = transaction.ETH_CURRENCY) {
+    if (!this.inited) {
+      const message = "Please wait for the Plasma chain to initialize...";
+      throw new Error(message);
+    }
+    const verifyingContract = this.config.plasmaContractAddress;
 
-    const utxosToSpend = await selectUtxos(amount, currency);
+    const utxosToSpend = await this.selectUtxos(amount, currency);
     if (!utxosToSpend) {
       throw new Error(`No utxo big enough to cover the amount ${amount}`);
     }
@@ -157,7 +170,7 @@ export default class BaseEmbarkOmg {
       // Need to add a 'change' output
       const CHANGE_AMOUNT = bnAmount.sub(new BigNumber(amount));
       txBody.outputs.push({
-        owner: this.account.address,
+        owner: this.currentAddress,
         currency,
         amount: CHANGE_AMOUNT
       });
@@ -166,7 +179,7 @@ export default class BaseEmbarkOmg {
     if (currency !== transaction.ETH_CURRENCY && utxosToSpend.length > 1) {
       // The fee input can be returned
       txBody.outputs.push({
-        owner: this.account.address,
+        owner: this.currentAddress,
         currency: utxosToSpend[utxosToSpend.length - 1].currency,
         amount: utxosToSpend[utxosToSpend.length - 1].amount
       });
@@ -182,7 +195,7 @@ export default class BaseEmbarkOmg {
     //
     const signature = await signTypedData(
       this.web3,
-      this.web3.utils.toChecksumAddress(this.account.address),
+      this.web3.utils.toChecksumAddress(this.currentAddress),
       JSON.stringify(typedData)
     );
 
@@ -195,14 +208,19 @@ export default class BaseEmbarkOmg {
 
     const message = `Successfully submitted tx on the child chain: ${JSON.stringify(
       result
-    )}\nView the transaction: ${this.childChainExplorerUrl}transaction/${
+    )}\nView the transaction: ${this.config.childChainExplorerUrl}transaction/${
       result.txhash
       }`;
 
     return message;
   }
 
-  async exit(fromAddress) {
+  async exitAllUtxos(fromAddress) {
+    if (!this.inited) {
+      const message = "Please wait for the Plasma chain to initialize...";
+      throw new Error(message);
+    }
+
     const utxos = await this.childChain.getUtxos(fromAddress);
     if (utxos.length <= 0) {
       const message = `No UTXOs found on the Plasma chain for ${fromAddress}.`;
@@ -238,28 +256,43 @@ export default class BaseEmbarkOmg {
     }
   }
 
+  async exitUtxo(from, utxoToExit) {
+    if (!this.inited) {
+      const message = "Please wait for the Plasma chain to initialize...";
+      throw new Error(message);
+    }
+
+    const exitData = await this.childChain.getExitData(utxoToExit);
+
+    return this.rootChain.startStandardExit(
+      Number(exitData.utxo_pos.toString()),
+      exitData.txbytes,
+      exitData.proof,
+      {from}
+    );
+  }
+
   async selectUtxos(amount, currency) {
     const transferZeroFee = currency !== transaction.ETH_CURRENCY;
-    const utxos = await this.childChain.getUtxos(this.account.address);
+    const utxos = await this.childChain.getUtxos(this.currentAddress);
     return selectUtxos(utxos, amount, currency, transferZeroFee);
   }
 
-  async getTransactions() {
-    return this.childChain.getTransactions({
-      address: this.account.address
-    });
-  }
+  async balances() {
+    if (!this.inited) {
+      const message = "Please wait for the Plasma chain to initialize...";
+      throw new Error(message);
+    }
 
-  async getBalances() {
-    this.account.rootBalance = await this.web3.eth.getBalance(this.account.address);
+    const rootBalance = await this.web3.eth.getBalance(this.currentAddress);
 
-    const childchainBalance = await this.childChain.getBalance(this.account.address);
-    this.account.childBalance = await Promise.all(childchainBalance.map(
+    const childchainBalances = await this.childChain.getBalance(this.currentAddress);
+    const childBalances = await Promise.all(childchainBalances.map(
       async (balance) => {
         if (balance.currency === transaction.ETH_CURRENCY) {
           balance.symbol = 'wei';
         } else {
-          const tokenContract = new this.web3.eth.Contract(erc20abi, balance.currency);
+          const tokenContract = new this.web3.eth.Contract(ERC20_ABI, balance.currency);
           try {
             balance.symbol = await tokenContract.methods.symbol().call();
           } catch (err) {
@@ -268,6 +301,26 @@ export default class BaseEmbarkOmg {
         }
         return balance;
       }
-    ))
+    ));
+    return {
+      rootBalance,
+      childBalances
+    };
+  }
+
+  async updateState() {
+    if (!this.inited) {
+      const message = "Please wait for the Plasma chain to initialize...";
+      throw new Error(message);
+    }
+
+    const {rootBalance, childBalances} = await this.balances();
+    this.state.account.address = this.currentAddress;
+    this.state.account.rootBalance = rootBalance;
+    this.state.account.childBalances = childBalances;
+
+    this.state.transactions = await this.childChain.getTransactions({address: this.currentAddress});
+
+    this.state.utxos = await this.childChain.getUtxos(this.currentAddress);
   }
 }
diff --git a/src/utils.js b/src/utils.js
index 76c14c3..67dc769 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -2,7 +2,7 @@ import BigNumber from "bn.js";
 import { transaction } from "@omisego/omg-js-util";
 
 const DEFAULT_INTERVAL = 1000;
-const DEFAULT_BLOCKS_TO_WAIT = 1;
+const DEFAULT_BLOCKS_TO_WAIT = 13;
 
 export function confirmTransaction(web3, txnHash, options) {
   const interval = options && options.interval ? options.interval : DEFAULT_INTERVAL;
@@ -94,12 +94,12 @@ export function selectUtxos(utxos, amount, currency, includeFee) {
   }
 }
 
-export function signTypedData (web3, signer, data) {
+export function signTypedData(web3, signer, data) {
   return web3.currentProvider.send('eth_signTypedData_v3', [signer, data]);
 }
 
-export function normalizeUrl (url) {
-  if(!url.endsWith("/")) {
+export function normalizeUrl(url) {
+  if (!url.endsWith("/")) {
     url += "/";
   }
   return url;
diff --git a/yarn.lock b/yarn.lock
index 369773a..55b4c81 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -654,7 +654,7 @@
     core-js "^2.5.7"
     regenerator-runtime "^0.12.0"
 
-"@babel/runtime@^7.4.2":
+"@babel/runtime@^7.3.1", "@babel/runtime@^7.4.2":
   version "7.4.5"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.4.5.tgz#582bb531f5f9dc67d2fcb682979894f75e253f12"
   integrity sha512-TuI4qpWZP6lGOGIuGWtp9sPluqYICmbk8T/1vpSysqJxRPkudh/ofFWyqdcMsDf2s7KvDL4/YHgKyvcS3g9CJQ==
@@ -733,6 +733,23 @@
     "@omisego/omg-js-rootchain" "^2.0.0-v0.2"
     "@omisego/omg-js-util" "^2.0.0-v0.2"
 
+"@types/bn.js@^4.11.4":
+  version "4.11.5"
+  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.5.tgz#40e36197433f78f807524ec623afcf0169ac81dc"
+  integrity sha512-AEAZcIZga0JgVMHNtl1CprA/hXX7/wPt79AgR4XqaDt7jyj3QWYw6LPoOiznPtugDmlubUnAahMs2PFxGcQrng==
+  dependencies:
+    "@types/node" "*"
+
+"@types/node@*":
+  version "12.0.8"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.0.8.tgz#551466be11b2adc3f3d47156758f610bd9f6b1d8"
+  integrity sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg==
+
+"@types/node@^10.12.18", "@types/node@^10.3.2":
+  version "10.14.9"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.14.9.tgz#2e8d678039d27943ce53a1913386133227fd9066"
+  integrity sha512-NelG/dSahlXYtSoVPErrp06tYFrvzj8XLWmKA+X8x0W//4MqbUyZu++giUG/v0bjAT6/Qxa8IjodrfdACyb0Fg==
+
 abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
@@ -755,6 +772,11 @@ acorn@^5.5.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
   integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
 
+aes-js@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.0.0.tgz#e21df10ad6c2053295bcbb8dab40b09dbea87e4d"
+  integrity sha1-4h3xCtbCBTKVvLuNq0Cwnb6ofk0=
+
 ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
@@ -952,7 +974,7 @@ bn.js@4.11.6:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.6.tgz#53344adb14617a13f6e8dd2ce28905d1c0ba3215"
   integrity sha1-UzRK2xRhehP26N0s4okF0cC6MhU=
 
-bn.js@^4.10.0, bn.js@^4.11.0, bn.js@^4.11.1, bn.js@^4.11.8, bn.js@^4.4.0, bn.js@^4.8.0:
+bn.js@4.11.8, bn.js@^4.10.0, bn.js@^4.11.0, bn.js@^4.11.1, bn.js@^4.11.6, bn.js@^4.11.8, bn.js@^4.4.0, bn.js@^4.8.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
   integrity sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==
@@ -986,7 +1008,7 @@ brorand@^1.0.1:
   resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
   integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
 
-browserify-aes@^1.0.6:
+browserify-aes@^1.0.4, browserify-aes@^1.0.6:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
   integrity sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==
@@ -998,6 +1020,25 @@ browserify-aes@^1.0.6:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+browserify-cipher@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/browserify-cipher/-/browserify-cipher-1.0.1.tgz#8d6474c1b870bfdabcd3bcfcc1934a10e94f15f0"
+  integrity sha512-sPhkz0ARKbf4rRQt2hTpAHqn47X3llLkUGn+xEJzLjwY8LRs2p0v7ljvI5EyoRO/mexrNunNECisZs+gw2zz1w==
+  dependencies:
+    browserify-aes "^1.0.4"
+    browserify-des "^1.0.0"
+    evp_bytestokey "^1.0.0"
+
+browserify-des@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/browserify-des/-/browserify-des-1.0.2.tgz#3af4f1f59839403572f1c66204375f7a7f703e9c"
+  integrity sha512-BioO1xf3hFwz4kc6iBhI3ieDFompMhrMlnDFC4/0/vd5MokpuAc3R+LYbwTA9A5Yc9pq9UYPqffKpW2ObuwX5A==
+  dependencies:
+    cipher-base "^1.0.1"
+    des.js "^1.0.0"
+    inherits "^2.0.1"
+    safe-buffer "^5.1.2"
+
 browserify-sha3@^0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/browserify-sha3/-/browserify-sha3-0.0.4.tgz#086c47b8c82316c9d47022c26185954576dd8e26"
@@ -1020,6 +1061,11 @@ buffer-from@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
 
+buffer-to-arraybuffer@^0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/buffer-to-arraybuffer/-/buffer-to-arraybuffer-0.0.5.tgz#6064a40fa76eb43c723aba9ef8f6e1216d10511a"
+  integrity sha1-YGSkD6dutDxyOrqe+PbhIW0QURo=
+
 buffer-xor@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
@@ -1235,6 +1281,11 @@ convert-source-map@^1.1.0:
   dependencies:
     safe-buffer "~5.1.1"
 
+cookiejar@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.2.tgz#dd8a235530752f988f9a0844f3fc589e3111125c"
+  integrity sha512-Mw+adcfzPxcPeI+0WlvRrr/3lGVO0bD75SxX6811cxSh1Wbxx7xZBGK1eVtDf6si8rg2lhnUjsVLMFMfbRIuwA==
+
 copy-descriptor@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
@@ -1351,6 +1402,13 @@ decode-uri-component@^0.2.0:
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
   integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
 
+decompress-response@^3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/decompress-response/-/decompress-response-3.3.0.tgz#80a4dd323748384bfa248083622aedec982adff3"
+  integrity sha1-gKTdMjdIOEv6JICDYirt7Jgq3/M=
+  dependencies:
+    mimic-response "^1.0.0"
+
 deep-extend@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
@@ -1395,6 +1453,14 @@ delegates@^1.0.0:
   resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
   integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
 
+des.js@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/des.js/-/des.js-1.0.0.tgz#c074d2e2aa6a8a9a07dbd61f9a15c2cd83ec8ecc"
+  integrity sha1-wHTS4qpqipoH29YfmhXCzYPsjsw=
+  dependencies:
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+
 detect-libc@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
@@ -1407,6 +1473,11 @@ doctrine@^2.1.0:
   dependencies:
     esutils "^2.0.2"
 
+dom-walk@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
+  integrity sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg=
+
 drbg.js@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/drbg.js/-/drbg.js-1.0.1.tgz#3e36b6c42b37043823cdbc332d58f31e2445480b"
@@ -1421,6 +1492,16 @@ electron-to-chromium@^1.3.137:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.139.tgz#17a149701d934bbb91d2aa4ae09e5270c38dc0ff"
   integrity sha512-8cR7h6doIC/XLgPdsTM3BXpfWLzqrHS6jWrvWLsdZWZWFvVQQUJTbU/wUZsjRGK33OY5ZIiS1n6JbqowuWrmYg==
 
+elliptic@6.3.3:
+  version "6.3.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.3.3.tgz#5482d9646d54bcb89fd7d994fc9e2e9568876e3f"
+  integrity sha1-VILZZG1UvLif19mU/J4ulWiHbj8=
+  dependencies:
+    bn.js "^4.4.0"
+    brorand "^1.0.1"
+    hash.js "^1.0.0"
+    inherits "^2.0.1"
+
 elliptic@^6.4.0, elliptic@^6.4.1:
   version "6.4.1"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.1.tgz#c2d0b7776911b86722c632c3c06c60f2f819939a"
@@ -1441,7 +1522,7 @@ error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.4.3:
+es-abstract@^1.4.3, es-abstract@^1.5.0:
   version "1.13.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.13.0.tgz#ac86145fdd5099d8dd49558ccba2eaf9b88e24e9"
   integrity sha512-vDZfg/ykNxQVwup/8E1BZhVzFfBxs9NqMzGcvIJrqg5k2/5Za2bWo40dK2J1pgLngZ7c+Shh8lwYtLGyrwPutg==
@@ -1561,6 +1642,23 @@ esutils@^2.0.2:
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
   integrity sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs=
 
+eth-ens-namehash@2.0.8:
+  version "2.0.8"
+  resolved "https://registry.yarnpkg.com/eth-ens-namehash/-/eth-ens-namehash-2.0.8.tgz#229ac46eca86d52e0c991e7cb2aef83ff0f68bcf"
+  integrity sha1-IprEbsqG1S4MmR58sq74P/D2i88=
+  dependencies:
+    idna-uts46-hx "^2.3.1"
+    js-sha3 "^0.5.7"
+
+eth-lib@0.2.8:
+  version "0.2.8"
+  resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.8.tgz#b194058bef4b220ad12ea497431d6cb6aa0623c8"
+  integrity sha512-ArJ7x1WcWOlSpzdoTBX8vkwlkSQ85CjjifSZtV4co64vWxSV8geWfPI9x4SVYu3DSxnX4yWFVTtGL+j9DUFLNw==
+  dependencies:
+    bn.js "^4.11.6"
+    elliptic "^6.4.0"
+    xhr-request-promise "^0.1.2"
+
 eth-sig-util@^2.1.1:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-2.2.0.tgz#769fa3d296b450f6618dedeefe076642c923a16f"
@@ -1573,6 +1671,11 @@ eth-sig-util@^2.1.1:
     tweetnacl "^1.0.0"
     tweetnacl-util "^0.15.0"
 
+ethereum-common@^0.0.18:
+  version "0.0.18"
+  resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.0.18.tgz#2fdc3576f232903358976eb39da783213ff9523f"
+  integrity sha1-L9w1dvIykDNYl26znaeDIT/5Uj8=
+
 ethereumjs-abi@0.6.5:
   version "0.6.5"
   resolved "https://registry.yarnpkg.com/ethereumjs-abi/-/ethereumjs-abi-0.6.5.tgz#5a637ef16ab43473fa72a29ad90871405b3f5241"
@@ -1581,6 +1684,14 @@ ethereumjs-abi@0.6.5:
     bn.js "^4.10.0"
     ethereumjs-util "^4.3.0"
 
+ethereumjs-tx@^1.3.7:
+  version "1.3.7"
+  resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz#88323a2d875b10549b8347e09f4862b546f3d89a"
+  integrity sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==
+  dependencies:
+    ethereum-common "^0.0.18"
+    ethereumjs-util "^5.0.0"
+
 ethereumjs-util@^4.3.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz#3e9428b317eebda3d7260d854fddda954b1f1bc6"
@@ -1592,7 +1703,7 @@ ethereumjs-util@^4.3.0:
     rlp "^2.0.0"
     secp256k1 "^3.0.1"
 
-ethereumjs-util@^5.1.1:
+ethereumjs-util@^5.0.0, ethereumjs-util@^5.1.1:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz#3e0c0d1741471acf1036052d048623dee54ad642"
   integrity sha512-CJAKdI0wgMbQFLlLRtZKGcy/L6pzVRgelIZqRqNbuVFM3K9VEnyfbcvz0ncWMRNCe4kaHWjwRYQcYMucmwsnWA==
@@ -1618,6 +1729,30 @@ ethereumjs-util@^6.0.0:
     safe-buffer "^5.1.1"
     secp256k1 "^3.0.1"
 
+ethers@^4.0.27:
+  version "4.0.30"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.30.tgz#140653fd08adf2834bb2f3aceefa10d04205b47d"
+  integrity sha512-1a39Y+q5zTfrXCLndV+CHsTHq+T5/TvAx5y0S/PKd700C0lfU70CJnU7q89bd+4pIuWp05TkrEsrTj2dXhkcSA==
+  dependencies:
+    "@types/node" "^10.3.2"
+    aes-js "3.0.0"
+    bn.js "^4.4.0"
+    elliptic "6.3.3"
+    hash.js "1.1.3"
+    js-sha3 "0.5.7"
+    scrypt-js "2.0.4"
+    setimmediate "1.0.4"
+    uuid "2.0.1"
+    xmlhttprequest "1.8.0"
+
+ethjs-unit@^0.1.6:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/ethjs-unit/-/ethjs-unit-0.1.6.tgz#c665921e476e87bce2a9d588a6fe0405b2c41699"
+  integrity sha1-xmWSHkduh7ziqdWIpv4EBbLEFpk=
+  dependencies:
+    bn.js "4.11.6"
+    number-to-bn "1.7.0"
+
 ethjs-util@0.1.6, ethjs-util@^0.1.3:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/ethjs-util/-/ethjs-util-0.1.6.tgz#f308b62f185f9fe6237132fb2a9818866a5cd536"
@@ -1626,7 +1761,17 @@ ethjs-util@0.1.6, ethjs-util@^0.1.3:
     is-hex-prefixed "1.0.0"
     strip-hex-prefix "1.0.0"
 
-evp_bytestokey@^1.0.3:
+eventemitter3@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
+  integrity sha512-ivIvhpq/Y0uSjcHDcOIccjmYjGLcP09MFGE7ysAwkAvkXfpZlC985pH2/ui64DKazbTW/4kN3yqozUxlXzI6cA==
+
+eventemitter3@^3.1.0:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
+  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
+
+evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
   integrity sha512-/f2Go4TognH/KvCISP7OUsHn85hT9nUkxxA9BEWxFn+Oj9o8ZNLm/40hdlgSLyuOimsrTKLUMEorQexp/aPQeA==
@@ -1740,6 +1885,13 @@ flat-cache@^1.2.1:
     rimraf "~2.6.2"
     write "^0.2.1"
 
+for-each@^0.3.3:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"
+  integrity sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==
+  dependencies:
+    is-callable "^1.1.3"
+
 for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -1826,6 +1978,14 @@ glob@^7.0.0, glob@^7.0.5, glob@^7.1.2, glob@^7.1.3:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+global@~4.3.0:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
+  integrity sha1-52mJJopsdMOJCLEwWxD8DjlOnQ8=
+  dependencies:
+    min-document "^2.19.0"
+    process "~0.5.1"
+
 globals@^11.0.1, globals@^11.1.0:
   version "11.12.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-11.12.0.tgz#ab8795338868a0babd8525758018c2a7eb95c42e"
@@ -1904,6 +2064,14 @@ hash-base@^3.0.0:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+hash.js@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.3.tgz#340dedbe6290187151c1ea1d777a3448935df846"
+  integrity sha512-/UETyP0W22QILqS+6HowevwhEFJ3MBJnwTf75Qob9Wz9t0DPuisL8kW8YZMK62dHAKE1c1p+gY1TtOLY+USEHA==
+  dependencies:
+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.0"
+
 hash.js@^1.0.0, hash.js@^1.0.3:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
@@ -1938,6 +2106,13 @@ iconv-lite@^0.4.17, iconv-lite@^0.4.4:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
+idna-uts46-hx@^2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/idna-uts46-hx/-/idna-uts46-hx-2.3.1.tgz#a1dc5c4df37eee522bf66d969cc980e00e8711f9"
+  integrity sha512-PWoF9Keq6laYdIRwwCdhTPl60xRqAloYNMQLiyUnG42VjT53oW07BXIRM+NK7eQjzXjAk2gUvX9caRxlnF9TAA==
+  dependencies:
+    punycode "2.1.0"
+
 ieee754@^1.1.4:
   version "1.1.13"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.13.tgz#ec168558e95aa181fd87d37f55c32bbcb6708b84"
@@ -2044,7 +2219,7 @@ is-buffer@^1.1.5:
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
   integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
 
-is-callable@^1.1.4:
+is-callable@^1.1.3, is-callable@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
   integrity sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==
@@ -2120,6 +2295,11 @@ is-fullwidth-code-point@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
   integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
 
+is-function@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-function/-/is-function-1.0.1.tgz#12cfb98b65b57dd3d193a3121f5f6e2f437602b5"
+  integrity sha1-Es+5i2W1fdPRk6MSH19uL0N2ArU=
+
 is-glob@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-3.1.0.tgz#7ba5ae24217804ac70707b96922567486cc3e84a"
@@ -2182,6 +2362,11 @@ is-symbol@^1.0.2:
   dependencies:
     has-symbols "^1.0.0"
 
+is-typedarray@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
+  integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
+
 is-windows@^1.0.0, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
@@ -2214,6 +2399,11 @@ js-levenshtein@^1.1.3:
   resolved "https://registry.yarnpkg.com/js-levenshtein/-/js-levenshtein-1.1.6.tgz#c6cee58eb3550372df8deb85fad5ce66ce01d59d"
   integrity sha512-X2BB11YZtrRqY4EnQcLX5Rh373zbK4alC1FW7D7MBhL2gtcC17cTnr6DmfHZeS0s2rTHjUTMMHfG7gO8SSdw+g==
 
+js-sha3@0.5.7, js-sha3@^0.5.7:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.5.7.tgz#0d4ffd8002d5333aabaf4a23eed2f6374c9f28e7"
+  integrity sha1-DU/9gALVMzqrr0oj7tL2N0yfKOc=
+
 js-sha3@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.6.1.tgz#5b89f77a7477679877f58c4a075240934b1f95c0"
@@ -2421,6 +2611,18 @@ mimic-fn@^1.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
   integrity sha512-jf84uxzwiuiIVKiOLpfYk7N46TSy8ubTonmneY9vrpHNAnp0QBt2BxWV9dO3/j+BoVAb+a5G6YDPW3M5HOdMWQ==
 
+mimic-response@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
+  integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
+
+min-document@^2.19.0:
+  version "2.19.0"
+  resolved "https://registry.yarnpkg.com/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
+  integrity sha1-e9KC4/WELtKVu3SM3Z8f+iyCRoU=
+  dependencies:
+    dom-walk "^0.1.0"
+
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -2498,7 +2700,7 @@ nan@2.13.2:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.13.2.tgz#f51dc7ae66ba7d5d55e1e6d4d8092e802c9aefe7"
   integrity sha512-TghvYc72wlMGMVMluVo9WRJc0mB8KxxF/gZ4YYFy7V2ZQX9l7rgbPg7vjS9mt6U5HXODVFVI2bOduCzwOMv/lw==
 
-nan@^2.12.1, nan@^2.13.2, nan@^2.2.1:
+nan@^2.0.8, nan@^2.11.0, nan@^2.12.1, nan@^2.13.2, nan@^2.2.1:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
   integrity sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==
@@ -2640,7 +2842,7 @@ number-is-nan@^1.0.0:
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
   integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
 
-number-to-bn@^1.7.0:
+number-to-bn@1.7.0, number-to-bn@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/number-to-bn/-/number-to-bn-1.7.0.tgz#bb3623592f7e5f9e0030b1977bd41a0c53fe1ea0"
   integrity sha1-uzYjWS9+X54AMLGXe9QaDFP+HqA=
@@ -2648,7 +2850,7 @@ number-to-bn@^1.7.0:
     bn.js "4.11.6"
     strip-hex-prefix "1.0.0"
 
-object-assign@^4.0.1, object-assign@^4.1.0:
+object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -2691,7 +2893,7 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-once@^1.3.0:
+once@^1.3.0, once@^1.3.1:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
@@ -2744,6 +2946,14 @@ output-file-sync@^2.0.0:
     is-plain-obj "^1.1.0"
     mkdirp "^0.5.1"
 
+parse-headers@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/parse-headers/-/parse-headers-2.0.2.tgz#9545e8a4c1ae5eaea7d24992bca890281ed26e34"
+  integrity sha512-/LypJhzFmyBIDYP9aDVgeyEb5sQfbfY5mnDq4hVhlQ69js87wXfmEI5V3xI6vvXasqebp0oCytYFLxsBVfCzSg==
+  dependencies:
+    for-each "^0.3.3"
+    string.prototype.trim "^1.1.2"
+
 parse-json@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-4.0.0.tgz#be35f5425be1f7f6c747184f98a788cb99477ee0"
@@ -2789,6 +2999,17 @@ path-type@^3.0.0:
   dependencies:
     pify "^3.0.0"
 
+pbkdf2@^3.0.17, pbkdf2@^3.0.3:
+  version "3.0.17"
+  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.17.tgz#976c206530617b14ebb32114239f7b09336e93a6"
+  integrity sha512-U/il5MsrZp7mGg3mSQfn742na2T+1/vHDCG5/iTI3X9MKUuYUZVLQhyRsg06mCgDBTd57TxzgZt7P+fYfjRLtA==
+  dependencies:
+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+    ripemd160 "^2.0.1"
+    safe-buffer "^5.0.1"
+    sha.js "^2.4.8"
+
 pidtree@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/pidtree/-/pidtree-0.3.0.tgz#f6fada10fccc9f99bf50e90d0b23d72c9ebc2e6b"
@@ -2824,6 +3045,11 @@ process-nextick-args@~2.0.0:
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.0.tgz#a37d732f4271b4ab1ad070d35508e8290788ffaa"
   integrity sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==
 
+process@~0.5.1:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
+  integrity sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8=
+
 progress@^2.0.0:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
@@ -2834,6 +3060,32 @@ pseudomap@^1.0.2:
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
   integrity sha1-8FKijacOYYkX7wqKw0wa5aaChrM=
 
+punycode@2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.0.tgz#5f863edc89b96db09074bad7947bf09056ca4e7d"
+  integrity sha1-X4Y+3Im5bbCQdLrXlHvwkFbKTn0=
+
+query-string@^5.0.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/query-string/-/query-string-5.1.1.tgz#a78c012b71c17e05f2e3fa2319dd330682efb3cb"
+  integrity sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==
+  dependencies:
+    decode-uri-component "^0.2.0"
+    object-assign "^4.1.0"
+    strict-uri-encode "^1.0.0"
+
+querystringify@^2.0.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.1.1.tgz#60e5a5fd64a7f8bfa4d2ab2ed6fdf4c85bad154e"
+  integrity sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA==
+
+randombytes@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
+  integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
+  dependencies:
+    safe-buffer "^5.1.0"
+
 rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -2969,6 +3221,11 @@ require-uncached@^1.0.3:
     caller-path "^0.1.0"
     resolve-from "^1.0.0"
 
+requires-port@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
+  integrity sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8=
+
 resolve-from@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
@@ -3060,6 +3317,13 @@ rx-lite@*, rx-lite@^4.0.8:
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
   integrity sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=
 
+rxjs@^6.4.0:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.5.2.tgz#2e35ce815cd46d84d02a209fb4e5921e051dbec7"
+  integrity sha512-HUb7j3kvb7p7eCUHE3FqjoDsC1xfZQ4AHFWfTKSpZ+sAhhz5X1WX0ZuUqWbzB2QhSLp3DoLUG+hMdEDKqWo2Zg==
+  dependencies:
+    tslib "^1.9.0"
+
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
@@ -3082,6 +3346,34 @@ sax@^1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
+scrypt-js@2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.4.tgz#32f8c5149f0797672e551c07e230f834b6af5f16"
+  integrity sha512-4KsaGcPnuhtCZQCxFxN3GVYIhKFPTdLd8PLC552XwbMndtD0cjRFAhDuuydXQ0h08ZfPgzqe6EKHozpuH74iDw==
+
+scrypt.js@0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.3.0.tgz#6c62d61728ad533c8c376a2e5e3e86d41a95c4c0"
+  integrity sha512-42LTc1nyFsyv/o0gcHtDztrn+aqpkaCNt5Qh7ATBZfhEZU7IC/0oT/qbBH+uRNoAPvs2fwiOId68FDEoSRA8/A==
+  dependencies:
+    scryptsy "^1.2.1"
+  optionalDependencies:
+    scrypt "^6.0.2"
+
+scrypt@^6.0.2:
+  version "6.0.3"
+  resolved "https://registry.yarnpkg.com/scrypt/-/scrypt-6.0.3.tgz#04e014a5682b53fa50c2d5cce167d719c06d870d"
+  integrity sha1-BOAUpWgrU/pQwtXM4WfXGcBthw0=
+  dependencies:
+    nan "^2.0.8"
+
+scryptsy@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/scryptsy/-/scryptsy-1.2.1.tgz#a3225fa4b2524f802700761e2855bdf3b2d92163"
+  integrity sha1-oyJfpLJST4AnAHYeKFW987LZIWM=
+  dependencies:
+    pbkdf2 "^3.0.3"
+
 secp256k1@^3.0.1:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.7.0.tgz#e85972f847b586cc4b2acd69497d3f80afaa7505"
@@ -3131,6 +3423,11 @@ set-value@^2.0.0:
     is-plain-object "^2.0.3"
     split-string "^3.0.1"
 
+setimmediate@1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.4.tgz#20e81de622d4a02588ce0c8da8973cbcf1d3138f"
+  integrity sha1-IOgd5iLUoCWIzgyNqJc8vPHTE48=
+
 sha.js@^2.4.0, sha.js@^2.4.8:
   version "2.4.11"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.11.tgz#37a5cf0b81ecbc6943de109ba2960d1b26584ae7"
@@ -3173,6 +3470,20 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
   integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
 
+simple-concat@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.0.tgz#7344cbb8b6e26fb27d66b2fc86f9f6d5997521c6"
+  integrity sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=
+
+simple-get@^2.7.0:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/simple-get/-/simple-get-2.8.1.tgz#0e22e91d4575d87620620bc91308d57a77f44b5d"
+  integrity sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==
+  dependencies:
+    decompress-response "^3.3.0"
+    once "^1.3.1"
+    simple-concat "^1.0.0"
+
 slash@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-2.0.0.tgz#de552851a1759df3a8f206535442f5ec4ddeab44"
@@ -3282,6 +3593,11 @@ static-extend@^0.1.1:
     define-property "^0.2.5"
     object-copy "^0.1.0"
 
+strict-uri-encode@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
+  integrity sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=
+
 string-width@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
@@ -3308,6 +3624,15 @@ string.prototype.padend@^3.0.0:
     es-abstract "^1.4.3"
     function-bind "^1.0.2"
 
+string.prototype.trim@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/string.prototype.trim/-/string.prototype.trim-1.1.2.tgz#d04de2c89e137f4d7d206f086b5ed2fae6be8cea"
+  integrity sha1-0E3iyJ4Tf019IG8Ia17S+ua+jOo=
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.5.0"
+    function-bind "^1.0.2"
+
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -3393,6 +3718,11 @@ through@^2.3.6:
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
   integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
 
+timed-out@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/timed-out/-/timed-out-4.0.1.tgz#f32eacac5a175bea25d7fab565ab3ed8741ef56f"
+  integrity sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=
+
 tmp@^0.0.33:
   version "0.0.33"
   resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
@@ -3435,6 +3765,11 @@ trim-right@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
   integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
 
+tslib@^1.9.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
+  integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+
 tweetnacl-util@^0.15.0:
   version "0.15.0"
   resolved "https://registry.yarnpkg.com/tweetnacl-util/-/tweetnacl-util-0.15.0.tgz#4576c1cee5e2d63d207fee52f1ba02819480bc75"
@@ -3452,6 +3787,13 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
+typedarray-to-buffer@^3.1.5:
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz#a97ee7a9ff42691b9f783ff1bc5112fe3fca9080"
+  integrity sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==
+  dependencies:
+    is-typedarray "^1.0.0"
+
 typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
@@ -3508,16 +3850,44 @@ urix@^0.1.0:
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
   integrity sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=
 
+url-parse@1.4.4:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.4.4.tgz#cac1556e95faa0303691fec5cf9d5a1bc34648f8"
+  integrity sha512-/92DTTorg4JjktLNLe6GPS2/RvAd/RGr6LuktmWSMLEOa6rjnlrFXNgSbSmkNvCoL2T028A0a1JaJLzRMlFoHg==
+  dependencies:
+    querystringify "^2.0.0"
+    requires-port "^1.0.0"
+
+url-set-query@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/url-set-query/-/url-set-query-1.0.0.tgz#016e8cfd7c20ee05cafe7795e892bd0702faa339"
+  integrity sha1-AW6M/Xwg7gXK/neV6JK9BwL6ozk=
+
 use@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
   integrity sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==
 
+utf8@2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/utf8/-/utf8-2.1.1.tgz#2e01db02f7d8d0944f77104f1609eb0c304cf768"
+  integrity sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g=
+
 util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
   integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
 
+uuid@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.1.tgz#c2a30dedb3e535d72ccf82e343941a50ba8533ac"
+  integrity sha1-wqMN7bPlNdcsz4LjQ5QaULqFM6w=
+
+uuid@3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
+  integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
+
 validate-npm-package-license@^3.0.1:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
@@ -3526,6 +3896,247 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
+web3-core-helpers@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.0.0-beta.55.tgz#832b8499889f9f514b1d174f00172fd3683d63de"
+  integrity sha512-suj9Xy/lIqajaYLJTEjr2rlFgu6hGYwChHmf8+qNrC2luZA6kirTamtB9VThWMxbywx7p0bqQFjW6zXogAgWhg==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    lodash "^4.17.11"
+    web3-core "1.0.0-beta.55"
+    web3-eth-iban "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-core-method@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.0.0-beta.55.tgz#0af994295ac2dd64ccd53305b7df8da76e11da49"
+  integrity sha512-w1cW/s2ji9qGELHk2uMJCn1ooay0JJLVoPD1nvmsW6OTRWcVjxa62nJrFQhe6P5lEb83Xk9oHgmCxZoVUHibOw==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    eventemitter3 "3.1.0"
+    lodash "^4.17.11"
+    rxjs "^6.4.0"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-subscriptions "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-core-subscriptions@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.0.0-beta.55.tgz#105902c13db53466fc17d07a981ad3d41c700f76"
+  integrity sha512-pb3oQbUzK7IoyXwag8TYInQddg0rr7BHxKc+Pbs/92hVNQ5ps4iGMVJKezdrjlQ1IJEEUiDIglXl4LZ1hIuMkw==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    eventemitter3 "^3.1.0"
+    lodash "^4.17.11"
+
+web3-core@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.0.0-beta.55.tgz#26b9abbf1bc1837c9cc90f06ecbc4ed714f89b53"
+  integrity sha512-AMMp7TLEtE7u8IJAu/THrRhBTZyZzeo7Y6GiWYNwb5+KStC9hIGLr9cI1KX9R6ZioTOLRHrqT7awDhnJ1ku2mg==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    "@types/bn.js" "^4.11.4"
+    "@types/node" "^10.12.18"
+    lodash "^4.17.11"
+    web3-core-method "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-abi@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.0.0-beta.55.tgz#69250420039346105a3d0f899c0a8a53be926f97"
+  integrity sha512-3h1xnm/vYmKUXTOYAOP0OsB5uijQV76pNNRGKOB6Dq6GR1pbcbD3WrB/4I643YA8l91t5FRzFzUiA3S77R2iqw==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    ethers "^4.0.27"
+    lodash "^4.17.11"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-accounts@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.0.0-beta.55.tgz#ba734ffdc1e3cc8ac0ea01de5241323a0c2f69f3"
+  integrity sha512-VfzvwpSDHXqRVelIxsBVhgbV9BkFvhJ/q+bKhnVUUXV0JAhMK/7uC92TsqKk4EBYuqpHyZ1jjqrL4n03fMU7zw==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    browserify-cipher "^1.0.1"
+    eth-lib "0.2.8"
+    lodash "^4.17.11"
+    pbkdf2 "^3.0.17"
+    randombytes "^2.1.0"
+    scrypt.js "0.3.0"
+    uuid "3.3.2"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-contract@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.0.0-beta.55.tgz#cd9e6727ff73d648ebe7cae17516e8aec5873c65"
+  integrity sha512-v6oB1wfH039/A5sTb4ZTKX++fcBTHEkuQGpq50ATIDoxP/UTz2+6S+iL+3sCJTsByPw2/Bni/HM7NmLkXqzg/Q==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    "@types/bn.js" "^4.11.4"
+    lodash "^4.17.11"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-core-subscriptions "1.0.0-beta.55"
+    web3-eth-abi "1.0.0-beta.55"
+    web3-eth-accounts "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-ens@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.0.0-beta.55.tgz#4341434a3406728212d411ae7f22d4cf5b8642fe"
+  integrity sha512-jEL17coO0FJXb7KYq4+7DhVXj0Rh+wHfZ86jOvFUvJsRaUHfqK2TlMatuhD2mbrmxpBYb6oMPnXVnNK9bnD5Rg==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    eth-ens-namehash "2.0.8"
+    lodash "^4.17.11"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-eth-abi "1.0.0-beta.55"
+    web3-eth-accounts "1.0.0-beta.55"
+    web3-eth-contract "1.0.0-beta.55"
+    web3-net "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-iban@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.0.0-beta.55.tgz#15146a69de21addc99e7dbfb2920555b1e729637"
+  integrity sha512-a2Fxsb5Mssa+jiXgjUdIzJipE0175IcQXJbZLpKft2+zeSJWNTbaa3PQD2vPPpIM4W789q06N+f9Zc0Fyls+1g==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    bn.js "4.11.8"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth-personal@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.0.0-beta.55.tgz#76e9d2da1501ee3c686751e7c7df63cc11793a1d"
+  integrity sha512-H0mahLQx6Oj7lpgTamKAswr3rHChRUZijeWAar2Hj7BABQlLRKwx8n09nYhxggvvLYQNQS90JjvQue7rAo2LQQ==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-eth-accounts "1.0.0-beta.55"
+    web3-net "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-eth@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.0.0-beta.55.tgz#bb52150df0a77bd13511449a53793d4eb23ade6e"
+  integrity sha512-F3zJ9I1gOgQdNGfi2Dy2lmj6OqCMJoRN01XHhQZagq0HY1JYMfObtfMi5E3L+qsegsSddHbqp4YY57tKx6uxpA==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    ethereumjs-tx "^1.3.7"
+    rxjs "^6.4.0"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-core-subscriptions "1.0.0-beta.55"
+    web3-eth-abi "1.0.0-beta.55"
+    web3-eth-accounts "1.0.0-beta.55"
+    web3-eth-contract "1.0.0-beta.55"
+    web3-eth-ens "1.0.0-beta.55"
+    web3-eth-iban "1.0.0-beta.55"
+    web3-eth-personal "1.0.0-beta.55"
+    web3-net "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-net@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.0.0-beta.55.tgz#daf24323df16a890a0bac6c6eda48b6e8c7e96ef"
+  integrity sha512-do2WY8+/GArJSWX7k/zZ7nBnV9Y3n6LhPYkwT3LeFqDzD515bKwlomaNC8hOaTc6UQyXIoPprYTK2FevL7jrZw==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    lodash "^4.17.11"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-providers@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-providers/-/web3-providers-1.0.0-beta.55.tgz#639503517741b69baaa82f1f940630df6a25992b"
+  integrity sha512-MNifc7W+iF6rykpbDR1MuX152jshWdZXHAU9Dk0Ja2/23elhIs4nCWs7wOX9FHrKgdrQbscPoq0uy+0aGzyWVQ==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    "@types/node" "^10.12.18"
+    eventemitter3 "3.1.0"
+    lodash "^4.17.11"
+    url-parse "1.4.4"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+    websocket "^1.0.28"
+    xhr2-cookies "1.1.0"
+
+web3-shh@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.0.0-beta.55.tgz#56f152ebcefb791dab86d2e6f1c296f8c1553644"
+  integrity sha512-lGP2HQ/1ThNnfoU8677aL48KsTx4Ht+2KQIn39dGpxVZqysQmovQIltbymVnAr4h8wofwcEz46iNHGa+PAyNzA==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    web3-core "1.0.0-beta.55"
+    web3-core-helpers "1.0.0-beta.55"
+    web3-core-method "1.0.0-beta.55"
+    web3-core-subscriptions "1.0.0-beta.55"
+    web3-net "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+web3-utils@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.0.0-beta.55.tgz#beb40926b7c04208b752d36a9bc959d27a04b308"
+  integrity sha512-ASWqUi8gtWK02Tp8ZtcoAbHenMpQXNvHrakgzvqTNNZn26wgpv+Q4mdPi0KOR6ZgHFL8R/9b5BBoUTglS1WPpg==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    "@types/bn.js" "^4.11.4"
+    "@types/node" "^10.12.18"
+    bn.js "4.11.8"
+    eth-lib "0.2.8"
+    ethjs-unit "^0.1.6"
+    lodash "^4.17.11"
+    number-to-bn "1.7.0"
+    randombytes "^2.1.0"
+    utf8 "2.1.1"
+
+web3@1.0.0-beta.55:
+  version "1.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/web3/-/web3-1.0.0-beta.55.tgz#8845075129299da172c2eb41a748c8a87c2a2b5a"
+  integrity sha512-yJpwy4IUA3T/F9hWzYQVn0GbJCrAaZ0KTIO3iuqkhaYH0Y09KV7k4GzFi4hN7hT4cFTj4yIKaeVCwQ5kzvi2Vg==
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    "@types/node" "^10.12.18"
+    web3-core "1.0.0-beta.55"
+    web3-eth "1.0.0-beta.55"
+    web3-eth-personal "1.0.0-beta.55"
+    web3-net "1.0.0-beta.55"
+    web3-providers "1.0.0-beta.55"
+    web3-shh "1.0.0-beta.55"
+    web3-utils "1.0.0-beta.55"
+
+websocket@^1.0.28:
+  version "1.0.28"
+  resolved "https://registry.yarnpkg.com/websocket/-/websocket-1.0.28.tgz#9e5f6fdc8a3fe01d4422647ef93abdd8d45a78d3"
+  integrity sha512-00y/20/80P7H4bCYkzuuvvfDvh+dgtXi5kzDf3UcZwN6boTYaKvsrtZ5lIYm1Gsg48siMErd9M4zjSYfYFHTrA==
+  dependencies:
+    debug "^2.2.0"
+    nan "^2.11.0"
+    typedarray-to-buffer "^3.1.5"
+    yaeti "^0.0.6"
+
 which@^1.2.9:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
@@ -3557,6 +4168,58 @@ write@^0.2.1:
   dependencies:
     mkdirp "^0.5.1"
 
+xhr-request-promise@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz#343c44d1ee7726b8648069682d0f840c83b4261d"
+  integrity sha1-NDxE0e53JrhkgGloLQ+EDIO0Jh0=
+  dependencies:
+    xhr-request "^1.0.1"
+
+xhr-request@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/xhr-request/-/xhr-request-1.1.0.tgz#f4a7c1868b9f198723444d82dcae317643f2e2ed"
+  integrity sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==
+  dependencies:
+    buffer-to-arraybuffer "^0.0.5"
+    object-assign "^4.1.1"
+    query-string "^5.0.1"
+    simple-get "^2.7.0"
+    timed-out "^4.0.1"
+    url-set-query "^1.0.0"
+    xhr "^2.0.4"
+
+xhr2-cookies@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz#7d77449d0999197f155cb73b23df72505ed89d48"
+  integrity sha1-fXdEnQmZGX8VXLc7I99yUF7YnUg=
+  dependencies:
+    cookiejar "^2.1.1"
+
+xhr@^2.0.4:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.5.0.tgz#bed8d1676d5ca36108667692b74b316c496e49dd"
+  integrity sha512-4nlO/14t3BNUZRXIXfXe+3N6w3s1KoxcJUUURctd64BLRe67E4gRwp4PjywtDY72fXpZ1y6Ch0VZQRY/gMPzzQ==
+  dependencies:
+    global "~4.3.0"
+    is-function "^1.0.1"
+    parse-headers "^2.0.0"
+    xtend "^4.0.0"
+
+xmlhttprequest@1.8.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz#67fe075c5c24fef39f9d65f5f7b7fe75171968fc"
+  integrity sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw=
+
+xtend@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
+  integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=
+
+yaeti@^0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/yaeti/-/yaeti-0.0.6.tgz#f26f484d72684cf42bedfb76970aa1608fbf9577"
+  integrity sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc=
+
 yallist@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"