diff --git a/.eslintrc.json b/.eslintrc.json
index 403c84d..151d6a9 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -7,5 +7,9 @@
       "no-lonely-if": 0,
       "prefer-destructuring": 0
     },
+    "env": {
+      "es6" : true,
+      "node" : true
+    },
     "extends": ["airbnb-base"]
 }
\ No newline at end of file
diff --git a/app.js b/app.js
index d78a066..dfed5c9 100644
--- a/app.js
+++ b/app.js
@@ -97,7 +97,7 @@ if (process.env.NODE_ENV === 'test') {
 * Account creation/loading based on presets given 
 * @dev : Only create wallets if the user does not supply any load file
 */
-if(!options.load) { 
+if (!options.load) {
   if (options.fixtures) {
     utils.logVerbose(logLabel, `Bootstrapping from account fixture files: ${options.fixtures}`);
     const accountsPath = options.fixtures;
@@ -114,7 +114,6 @@ if(!options.load) {
 
 wallet.printWallet();
 
-
 // cross region settings with Env
 if (process.env.NODE_ENV === 'dev') {
   expressjs.use(cors());
@@ -199,10 +198,12 @@ const handler = async (req, res) => {
       res.status(200).send(makeResponse(body.id, body.jsonrpc, data, false));
       break;
     case 'CreateTransaction':
+      console.log(body.params);
       try {
         const txnId = await logic.processCreateTxn(body.params, options);
         data = txnId;
       } catch (err) {
+        console.log(err);
         data = err.message;
         res.status(200).send(makeResponse(body.id, body.jsonrpc, data, true));
         break;
@@ -248,7 +249,7 @@ process.on('SIGINT', function () {
   // If `save` is enabled, store files under the saved/ directory
   if (options.save) {
     console.log(`Save mode enabled. Extracting data now..`);
-    
+
     const dir = config.savedFilesDir;
     if (!fs.existsSync(dir)) {
       fs.mkdirSync(dir);
@@ -256,7 +257,7 @@ process.on('SIGINT', function () {
 
     // Saved files will be prefixed with the timestamp when the user decides to end the session
     const timestamp = utils.getDateTimeString();
-    
+
     const outputData = `${dir}${timestamp}`;
     const targetFilePath = `${outputData}_data.json`;
     utils.consolePrint(`Files will be saved at ${targetFilePath}`);
@@ -283,7 +284,7 @@ process.on('SIGINT', function () {
   // remove files from the db_path
   rimraf.sync(`${options.dataPath}*`);
   console.log(`Files from ${options.dataPath} removed. Shutting down now.`);
-  process.exit(0);  
+  process.exit(0);
 })
 
 module.exports = {
diff --git a/components/CustomErrors.js b/components/CustomErrors.js
new file mode 100644
index 0000000..98d62fe
--- /dev/null
+++ b/components/CustomErrors.js
@@ -0,0 +1,34 @@
+class InterpreterError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "InterpreterError";
+    }
+}
+
+class BalanceError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "BalanceError";
+    }
+}
+
+class MultiContractError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "MulticontractError";
+    }
+}
+
+class InsufficientGasError extends Error {
+    constructor(message) {
+        super(message);
+        this.name = "InsufficientGasError";
+    }
+}
+
+module.exports = {
+    InterpreterError: InterpreterError,
+    BalanceError : BalanceError,
+    MultiContractError : MultiContractError,
+    InsufficientGasError : InsufficientGasError
+}
\ No newline at end of file
diff --git a/components/scilla/scilla.js b/components/scilla/scilla.js
index 304c24d..671fd62 100644
--- a/components/scilla/scilla.js
+++ b/components/scilla/scilla.js
@@ -18,12 +18,14 @@
 const fs = require("fs");
 const { promisify } = require("util");
 const rp = require("request-promise");
-const { exec } = require("child_process");
+const { execFile } = require("child_process");
 const { paramsCleanup, codeCleanup, logVerbose } = require("../../utilities");
+const { InterpreterError } = require('../CustomErrors');
 const config = require("../../config");
 const logLabel = "Scilla";
 
-const execAsync = promisify(exec);
+const execFileAsync = promisify(execFile);
+
 
 const makeBlockchainJson = (val, blockchainPath) => {
   const blockchainData = [
@@ -47,15 +49,18 @@ const initializeContractState = amt => {
   ];
   return initState;
 };
+/**
+ * Runs the remote interpreter (currently hosted by zilliqa)
+ * @async
+ * @method runRemoteInterpreterAsync
+ * @param {Object} data object containing the code, state, init, message and blockchain filepath
+ * @returns: Output message received from the remote scilla interpreter
+ */
 
-/*
-  Runs the remote interpreter (currently hosted by zilliqa)
-  [DEFAULT] - configurable through the config file
-  @params: data object containing the code, state, init, message and blockchain filepath
-  @returns: Output message received from the remote scilla interpreter
-*/
 const runRemoteInterpreterAsync = async data => {
   logVerbose(logLabel, "Running Remote Interpreter");
+  console.log('throwing interpreter error');
+  throw new InterpreterError('Remote interpreter is currently unavailable');
 
   const reqData = {
     code: fs.readFileSync(data.code, "utf-8"),
@@ -77,6 +82,7 @@ const runRemoteInterpreterAsync = async data => {
     body: reqData,
   };
 
+  logVerbose(logLabel, 'Attempting to run remote interpreter now');
   let response;
   try {
     response = await rp(options);
@@ -84,9 +90,11 @@ const runRemoteInterpreterAsync = async data => {
     console.log(`Interpreter failed to process code. Error message received:`);
     console.log(`${err.message}`);
     console.log("Possible fix: Have your code passed type checking?");
-    throw new Error("KayaRPC-specific: Interpreter error");
+    throw new InterpreterError('Remote interpreter failed to run')
   }
-
+  
+  // FIXME: Change error mechanism once the Scilla versioning is completed
+  // https://github.com/Zilliqa/scilla/issues/291
   if (!response.message.gas_remaining) {
     console.log(
       "WARNING: You are using an outdated scilla interpreter. Please upgrade to the latest version"
@@ -97,17 +105,28 @@ const runRemoteInterpreterAsync = async data => {
   return response.message;
 };
 
-const runLocalInterpreterAsync = async (command, outputPath) => {
+/**
+ * Executes the local interpreter
+ * @async
+ * @method runLocalInterpreterAsync
+ * @param { Object } cmdOptions: Command options required to run the scilla interpreter
+ * @param { String } outputPath : File path to the output file
+ * @returns { Object } - response object
+ */
+
+const runLocalInterpreterAsync = async (cmdOptions, outputPath) => {
   logVerbose(logLabel, "Running local scilla interpreter");
+
+  const SCILLA_BIN_PATH = config.constants.smart_contract.SCILLA_BINARY;
   // Run Scilla Interpreter
-  if (!fs.existsSync(config.scilla.runnerPath)) {
+  if (!fs.existsSync(SCILLA_BIN_PATH)) {
     logVerbose(logLabel, "Scilla runner not found. Hint: Have you compiled the scilla binaries?");
-    throw new Error("Kaya RPC Runtime Error: Scilla-runner not found");
+    throw new InterpreterError("Kaya RPC Runtime Error: Scilla-runner not found");
   }
 
-  const result = await execAsync(command);
+  const result = await execFileAsync(SCILLA_BIN_PATH, cmdOptions);
   if (result.stderr !== "") {
-    throw new Error(`Interpreter error: ${result.stderr}`);
+    throw new InterpreterError(`Interpreter error: ${result.stderr}`);
   }
 
   logVerbose(logLabel, "Scilla execution completed");
@@ -117,25 +136,43 @@ const runLocalInterpreterAsync = async (command, outputPath) => {
 };
 
 module.exports = {
-  executeScillaRun: async (payload, address, dir, currentBnum, gasLimit) => {
+
+  /**
+   * Takes arguments from `logic.js` and runs the scilla interpreter
+   * 
+   * @method executeScillaRun 
+   * @async
+   * @param { Object } payload - payload object from the message
+   * @param { String } contractAddr - Contract address, only applicable if it is a deployment call
+   * @param { String } senderAddress - message sender address
+   * @param { String } directory of the data files
+   * @param { String } current block number
+   * @param { String } gasLimit - gasLimit specified by the caller
+   * @returns { Object } consisting of `gasRemaining and nextAddress`
+   */
+  executeScillaRun: async (payload, contractAddr, senderAddr, dir, currentBnum) => {
     // Get the blocknumber into a json file
-    const blockchainPath = `${dir}/blockchain.json`;
+    const blockchainPath = `${dir}blockchain.json`;
     makeBlockchainJson(currentBnum, blockchainPath);
 
-    let isCodeDeployment = payload.code && payload.to === "0".repeat(40);
-    const contractAddr = isCodeDeployment ? address : payload.to;
+    let isCodeDeployment = payload.code && payload.toAddr === "0".repeat(40);
+    contractAddr = (isCodeDeployment) ? contractAddr : payload.toAddr;
 
     const initPath = `${dir}${contractAddr}_init.json`;
     const codePath = `${dir}${contractAddr}_code.scilla`;
-    const outputPath = `${dir}/${contractAddr}_out.json`;
+    const outputPath = `${dir}${contractAddr}_out.json`;
     const statePath = `${dir}${contractAddr}_state.json`;
-    let cmd;
+
+    const standardOpt = ['-libdir', config.constants.smart_contract.SCILLA_LIB, '-gaslimit', payload.gasLimit];
+    const initOpt = ['-init', initPath];
+    const outputOpt = ['-o', outputPath];
+    const codeOpt = ['-i', codePath];
+    const blockchainOpt = ['-iblockchain', blockchainPath];
+
+    const cmdOpt = [].concat.apply([], [standardOpt, initOpt, outputOpt, codeOpt, blockchainOpt])
+
     if (isCodeDeployment) {
       logVerbose(logLabel, "Code Deployment");
-      // initialized with standard message template
-      isCodeDeployment = true;
-      cmd = `${config.scilla.runnerPath} -iblockchain ${blockchainPath} -o ${outputPath} -init ${initPath} -i ${codePath} -gaslimit ${gasLimit} -libdir ${
-        config.scilla.localLibDir}`;
 
       // get init data from payload
       const initParams = JSON.stringify(payload.data);
@@ -147,7 +184,7 @@ module.exports = {
       fs.writeFileSync(codePath, cleanedCode);
     } else {
       // Invoke transition
-      logVerbose(logLabel, `Calling transition within contract ${payload.to}`);
+      logVerbose(logLabel, `Calling transition within contract ${payload.toAddr}`);
 
       logVerbose(logLabel, `Code Path: ${codePath}`);
       logVerbose(logLabel, `Init Path: ${initPath}`);
@@ -156,15 +193,18 @@ module.exports = {
         throw new Error("Address does not exist");
       }
 
-      // get message from payload information
-      const msgPath = `${dir}${payload.to}_message.json`;
-
-      const incomingMessage = JSON.stringify(payload.data);
-      const cleanedMsg = paramsCleanup(incomingMessage);
-      fs.writeFileSync(msgPath, cleanedMsg);
-
-      // Invoke contract requires additional message and state paths
-      cmd = `${cmd} -imessage ${msgPath} -istate ${statePath}`;
+      // Create message object from payload
+      const msgPath = `${dir}${payload.toAddr}_message.json`;
+      msgObj = JSON.parse(payload.data);
+      msgObj._amount = payload.amount;
+      msgObj._sender = `0x${senderAddr}`;
+      fs.writeFileSync(msgPath, JSON.stringify(msgObj));
+
+      // Append additional options for transition calls
+      cmdOpt.push('-imessage');
+      cmdOpt.push(msgPath);
+      cmdOpt.push('-istate');
+      cmdOpt.push(statePath);
     }
 
     if (!fs.existsSync(codePath) || !fs.existsSync(initPath)) {
@@ -176,7 +216,7 @@ module.exports = {
 
     if (!config.scilla.remote) {
       // local scilla interpreter
-      retMsg = await runLocalInterpreterAsync(cmd, outputPath);
+      retMsg = await runLocalInterpreterAsync(cmdOpt, outputPath);
     } else {
       const apiReqParams = {
         output: outputPath,
@@ -209,7 +249,7 @@ module.exports = {
       logVerbose(logLabel, `Next address: ${retMsg.message._recipient}`);
       responseData.nextAddress = retMsg.message._recipient;
     }
-    // Contract deployment runs do not have returned message
+    // Contract deployment do not have the next address
     responseData.nextAddress = "0".repeat(40);
 
     return responseData;
diff --git a/components/wallet/wallet.js b/components/wallet/wallet.js
index b3e6c86..3517e54 100644
--- a/components/wallet/wallet.js
+++ b/components/wallet/wallet.js
@@ -17,7 +17,8 @@
 
 /* Wallet Component */
 const assert = require('assert');
-const { Zilliqa } = require('zilliqa-js');
+const zCrypto = require('@zilliqa-js/crypto');
+const zUtils = require('@zilliqa-js/util')
 const BN = require('bn.js');
 const { logVerbose, consolePrint } = require('../../utilities');
 const config = require('../../config');
@@ -29,18 +30,17 @@ const logLabel = 'Wallet';
 // Wallet will store address, private key and balance
 let wallets = {};
 
-/*  Dummy constructor for zilliqajs */
-// @dev: Will be replaced once zilliqa-js exposes utils without constructors
-const zilliqa = new Zilliqa({
-  nodeUrl: 'http://localhost:8888',
-});
+/**
+ * Create a new wallet with the settings registered in `config.js` file
+ * @returns { Object } - wallet containing private key, amount and nonce
+ */
 
 const createNewWallet = () => {
-  const pk = zilliqa.util.generatePrivateKey();
-  const address = zilliqa.util.getAddressFromPrivateKey(pk);
+  const pk = zCrypto.schnorr.generatePrivateKey();
+  const address = zCrypto.getAddressFromPrivateKey(pk);
   const newWallet = {
     privateKey: pk,
-    amount: config.wallet.defaultAmt,
+    amount: new BN(config.wallet.defaultAmt),
     nonce: config.wallet.defaultNonce,
   };
   wallets[address] = newWallet;
@@ -49,7 +49,7 @@ const createNewWallet = () => {
 // validate an accounts object to check validity
 const validateAccounts = (accounts) => {
   Object.keys(accounts).forEach((key) => {
-    if (!zilliqa.util.isAddress(key)) {
+    if (!zUtils.validation.isAddress(key)) {
       throw new Error(`Invalid address ${key}`);
     }
     const account = accounts[key];
@@ -58,15 +58,15 @@ const validateAccounts = (accounts) => {
       throw new Error('Invalid fields');
     }
 
-    const addressFromPK = zilliqa.util.getAddressFromPrivateKey(
+    const addressFromPK = zCrypto.getAddressFromPrivateKey(
       account.privateKey,
     );
     if (addressFromPK !== key) {
       logVerbose(logLabel, 'Validation failure: Invalid Address and Private key-pair');
       throw new Error(`Invalid address for ${key}`);
     }
-    if (Number.isInteger(account.nonce) && Number.isInteger(account.amount)) {
-      if (account.nonce < 0 || account.amount < 0) {
+    if (Number.isInteger(account.nonce)) {
+      if (account.nonce < 0) {
         throw new Error('Invalid nonce or amount');
       }
     } else {
@@ -78,7 +78,7 @@ const validateAccounts = (accounts) => {
 };
 
 module.exports = {
-  
+
   createWallets: (n) => {
     assert(n > 0);
     for (let i = 0; i < n; i += 1) {
@@ -89,7 +89,10 @@ module.exports = {
   // load accounts object into wallets
   loadAccounts: (accounts) => {
     validateAccounts(accounts);
-    logVerbose(logLabel, 
+    Object.keys(accounts).map(addr => {
+      accounts[addr].amount = new BN(accounts[addr].amount);
+    });
+    logVerbose(logLabel,
       `${Object.keys(accounts).length} wallets bootstrapped from file`,
     );
     wallets = accounts;
@@ -101,6 +104,7 @@ module.exports = {
 
   },
 
+  // @fixme: Convert wallet object's amount field into string before exporting out
   getAccounts: () => wallets,
 
   printWallet: () => {
@@ -113,44 +117,58 @@ module.exports = {
       const keys = [];
       accountAddresses.forEach((addr, index) => {
         consolePrint(
-          `(${index+1}) ${addr}\t(Amt: ${wallets[addr].amount})\t(Nonce: ${
-            wallets[addr].nonce
+          `(${index + 1}) ${addr}\t(Amt: ${(wallets[addr].amount).toString()})\t(Nonce: ${
+          wallets[addr].nonce
           })`);
-          keys.push(wallets[addr].privateKey);
+        keys.push(wallets[addr].privateKey);
       });
 
       consolePrint('\n Private Keys ');
       consolePrint('='.repeat(80));
       keys.forEach((key, i) => {
-        consolePrint(`(${i+1}) ${key}`);
+        consolePrint(`(${i + 1}) ${key}`);
       });
       consolePrint('='.repeat(80));
     }
   },
 
+  /**
+   * sufficientFunds : Checks if a given address has sufficient zils
+   * @param { String } : address
+   * @param { BN } : amount of zils
+   * @returns { Boolean } : True if there is sufficient zils, False if otherwise
+   */
+
   sufficientFunds: (address, amount) => {
+    if(!BN.isBN(amount)) {
+      throw new Error('Type error');
+    };
     // checking if an address has sufficient funds for deduction
     const userBalance = module.exports.getBalance(address);
     logVerbose(logLabel, `Checking if ${address} has ${amount}`);
-    if (userBalance.balance < amount) {
-      logVerbose(logLabel, 'Insufficient funds.');
-      return false;
+    const bnCurrentBalance = new BN(userBalance.balance);
+    if(amount.lte(bnCurrentBalance)) {
+      logVerbose(logLabel, 'Sufficient Funds.');
+      return true;
     }
-    logVerbose(logLabel, 'Sufficient Funds.');
-    return true;
+    logVerbose(logLabel, 'Insufficient funds.');
+    return false;
   },
 
   /** 
    * Deduct funds from an account
-   * @param: {string}: Address of an account
-   * @param: {Number} amount: amount to be deducted
+   * @param {string}: Address of an account
+   * @param {Number}: amount to be deducted
    * Does not return any value
    */
 
   deductFunds: (address, amount) => {
+    if(!BN.isBN(amount)) {
+      throw new Error('Type error');
+    };
 
     logVerbose(logLabel, `Deducting ${amount} from ${address}`);
-    if (!zilliqa.util.isAddress(address)) {
+    if (!zUtils.validation.isAddress(address)) {
       throw new Error('Address size not appropriate');
     }
     if (!wallets[address] || !module.exports.sufficientFunds(address, amount)) {
@@ -160,54 +178,56 @@ module.exports = {
     // deduct funds
     let currentBalance = wallets[address].amount;
     logVerbose(logLabel, `Sender's previous Balance: ${currentBalance}`);
-    currentBalance -= amount;
-    if (currentBalance < 0) {
-      throw new Error('Unexpected error, funds went below 0');
-    }
-    wallets[address].amount = currentBalance;
-    logVerbose(logLabel, 
+    const newBalance = currentBalance.sub(amount);
+    wallets[address].amount = newBalance;
+    logVerbose(logLabel,
       `Deduct funds complete. Sender's new balance: ${wallets[address].amount}`,
     );
   },
 
   /** 
    * Add funds to an account address
-   * @param: { string } address - Address of recipient
-   * @param: { Number } amount - amount of zils to transfer
+   * @param { string }: address - Address of recipient
+   * @param { Number }: amount - amount of zils to transfer
    * Does not return any value
    */
   addFunds: (address, amount) => {
     logVerbose(logLabel, `Adding ${amount} to ${address}`);
-    if (!zilliqa.util.isAddress(address)) {
+    if(!BN.isBN(amount)) {
+      throw new Error('Type error');
+    };
+    if (!zUtils.validation.isAddress(address)) {
       throw new Error('Address size not appropriate');
     }
     if (!wallets[address]) {
       // initialize new wallet account
       logVerbose(logLabel, `Creating new wallet account for ${address}`);
       wallets[address] = {};
-      wallets[address].amount = 0;
+      wallets[address].amount = new BN(0);
       wallets[address].nonce = 0;
     }
     let currentBalance = wallets[address].amount;
-    logVerbose(logLabel, `Recipient's previous Balance: ${currentBalance}`);
+    logVerbose(logLabel, `Recipient's previous Balance: ${currentBalance.toString()}`);
 
     // add amount
-    const bnCurrentBalance = new BN(currentBalance);
-    const bnAmount = new BN(amount);
-    const resultBalance = bnCurrentBalance.add(bnAmount);
+    const resultBalance = currentBalance.add(amount);
+    wallets[address].amount = resultBalance;
 
-    // FIXME: Change wallet address amount to BN objects
-    wallets[address].amount = resultBalance.toNumber();
-    logVerbose(logLabel, 
+    logVerbose(logLabel,
       `Adding funds complete. Recipient's new Balance: ${
-        wallets[address].amount
+      wallets[address].amount.toString()
       }`,
     );
   },
 
+  /**
+   * Increases nonce for a given address
+   * @param { String } address 
+   */
+
   increaseNonce: (address) => {
     logVerbose(logLabel, `Increasing nonce for ${address}`);
-    if (!zilliqa.util.isAddress(address)) {
+    if (!zUtils.validation.isAddress(address)) {
       throw new Error('Address size not appropriate');
     }
     if (!wallets[address]) {
@@ -219,22 +239,30 @@ module.exports = {
     }
   },
 
+  /**
+   * GetBalance: Returns the balance for a given address
+   * Throws if the address is not well-formed
+   * @param { String } : value - address
+   * @returns {Object} { balance: {String}, nonce; Number}
+   */
+
   getBalance: (value) => {
-    if (!zilliqa.util.isAddress(value)) {
+    if (!zUtils.validation.isAddress(value)) {
       throw new Error('Address size not appropriate');
     }
-    logVerbose(logLabel, `Getting balance for ${value}`);
-    address = value.toLowerCase();
+
+    const address = value.toLowerCase();
+    logVerbose(logLabel, `Getting balance for ${address}`);
 
     if (!wallets[address]) {
       return {
-        balance: 0,
+        balance: "0",
         nonce: 0,
       };
     }
 
     return {
-      balance: wallets[address].amount,
+      balance: (wallets[address].amount).toString(),
       nonce: wallets[address].nonce,
     };
   },
diff --git a/config.js b/config.js
index 9cb0613..88c0bcd 100644
--- a/config.js
+++ b/config.js
@@ -29,16 +29,29 @@ module.exports = {
     // sets timer for the block confirmation
     blockInterval: 10000, // 10000 : 10 seconds for one block
     blockStart: 0,
-    gasPrice: 1, // ratio of gas to zil (dummy value of 1:1)
+    gasPrice: 100, // Min Gas is now 100
     transferGasCost: 1 // Amount of gas consumed for each transfer
   },
 
   wallet: {
     numAccounts: 10, // number of default accounts
-    defaultAmt: 100000, // default amount of zils assigned to each wallet
+    defaultAmt: "1000000", // default amount of zils assigned to each wallet
     defaultNonce: 0,
   },
 
+  // Relevant constants config copied from core zilliqa repo (constants.xml)
+  constants: {
+    gas: {
+      CONTRACT_CREATE_GAS: 500,
+      CONTRACT_INVOKE_GAS: 100,
+      NORMAL_TRAN_GAS: 10
+    },
+    smart_contract: {
+      SCILLA_BINARY: "./components/scilla/scilla-runner",
+      SCILLA_LIB: "./components/scilla/stdlib"
+    }
+  },
+
   /*
 Settings for the scilla interpreter
 - runner-path: Relative path to your scilla-runner
@@ -46,14 +59,12 @@ Settings for the scilla interpreter
 - url: URL to the remote scilla interpreter
 */
   scilla: {
-    runnerPath: "./components/scilla/scilla-runner",
-    localLibDir: "./components/scilla/stdlib",
-    remote: true,
+    remote: false,
     url: "https://scilla-runner.zilliqa.com/contract/call",
   },
 
   testconfigs: {
-    gasPrice: 1,
+    gasPrice: 100,
     gasLimit: 10,
     transferAmt: 100,
     args: {
diff --git a/logic.js b/logic.js
index 3c93b75..0f18103 100644
--- a/logic.js
+++ b/logic.js
@@ -19,10 +19,13 @@
 const hashjs = require('hash.js');
 const fs = require('fs');
 const BN = require('bn.js');
-const { Zilliqa } = require('zilliqa-js');
+const zCrypto = require('@zilliqa-js/crypto');
+const zUtils = require('@zilliqa-js/util');
+const { bytes } = require('@zilliqa-js/util');
 const scillaCtrl = require('./components/scilla/scilla');
 const walletCtrl = require('./components/wallet/wallet');
 const blockchain = require('./components/blockchain');
+const { InterpreterError, BalanceError, MultiContractError } = require('./components/CustomErrors');
 const { logVerbose, consolePrint } = require('./utilities');
 const config = require('./config');
 
@@ -32,27 +35,53 @@ const logLabel = ('Logic.js');
 let transactions = {};
 let createdContractsByUsers = {}; // address => contract addresses
 
-/*  Dummy constructor for zilliqajs */
-// @dev: Will be replaced once zilliqa-js exposes utils without constructors
-const zilliqa = new Zilliqa({
-  nodeUrl: 'http://localhost:8888',
-});
-
-// check multiplication overflow: Returns true if overflow
-const checkOverflow = (a, b) => {
-  const c = a * b;
-  return a !== c / b || b !== c / a;
-};
-
-// compute contract address from the sender's current nonce
-const computeContractAddr = (sender) => {
-  const userNonce = walletCtrl.getBalance(sender).nonce;
-  const nonceStr = zilliqa.util.intToByteArray(userNonce, 64).join('');
-  const digest = hashjs.sha256().update(sender).update(nonceStr).digest('hex');
-  return digest.slice(24);
+/**
+ * computes the contract address from the sender's address and nonce
+ * @method computeContractAddr
+ * @param { String } senderAddr 
+ * @returns { String } contract address to be deployed
+ */
+const computeContractAddr = (senderAddr) => {
+  const userNonce = walletCtrl.getBalance(senderAddr).nonce;
+  return hashjs.sha256().
+    update(senderAddr, 'hex').
+    update(bytes.intToHexArray(userNonce, 16).join(''), 'hex')
+    .digest('hex')
+    .slice(24);
 };
 
-// compute transactionHash from the payload
+/**
+ * Confirms the transaction by logging it
+ * @method logTransaction
+ * @param { Object } payload - payload of the incoming message
+ * @param { String } transactionID - transaction ID
+ * @param { Object } receiptInfo - information about gas and if the transaction is confirmed
+ * Does not return any message
+ */
+
+const logTransaction = (payload, transactionID, receiptInfo) => {
+
+  const txnDetails = {
+    ID: transactionID,
+    amount: payload.amount,
+    nonce: payload.nonce,
+    receipt: receiptInfo,
+    senderPubKey: payload.pubKey,
+    signature: payload.signature,
+    toAddr: payload.toAddr,
+    version: payload.version,
+  };
+  transactions[transactionID] = txnDetails;
+  logVerbose(logLabel, `Transaction logged: ${transactionID}`)
+
+}
+
+/**
+ * 
+ * Computes the transaction hash from a given payload
+ * @method computeTransactionHash
+ * @param { Object } payload : Payload of the message
+ */
 const computeTransactionHash = (payload) => {
   // transactionID is a sha256 digest of txndetails
   const copyPayload = JSON.parse(JSON.stringify(payload));
@@ -68,7 +97,13 @@ const computeTransactionHash = (payload) => {
 // check for common elements within the list
 const intersect = (a, b) => [...new Set(a)].filter(x => new Set(b).has(x));
 
-// checks if the transactionJson is well-formed
+/**
+ * Checks the transaction payload to make sure that it is well-formed
+ * @method checkTransactionJson
+ * @param { Object} data : Payload retrieved from message
+ * @returns { Boolean } : True if the payload is valid, false if it is not
+ */
+
 const checkTransactionJson = (data) => {
   if (data !== null && typeof data !== 'object') return false;
   const payload = data[0];
@@ -76,7 +111,7 @@ const checkTransactionJson = (data) => {
   const expectedFields = [
     'version',
     'nonce',
-    'to',
+    'toAddr',
     'amount',
     'pubKey',
     'gasPrice',
@@ -90,18 +125,23 @@ const checkTransactionJson = (data) => {
   const payloadKeys = Object.keys(payload);
   const expected = intersect(payloadKeys, expectedFields).length;
   const actual = Object.keys(expectedFields).length;
-
-  // `amount` must be a string after zilliqa-js 0.2.0
-  // FIXME: Enable checks after release of zilliqa-js 0.2.0
-  // if(typeof(payload['amount']) === 'number') {
-  //   console.log(`[DEPRECATION NOTICE] Please upgrade your zilliqa-js`);
-  //   return false;
-  // }
-
   // number of overlap keys must be the same as the expected keys
   if (expected !== actual) return false;
-  // validate signature - TODO
 
+  // Type checking for the payload
+  Object.keys(payload).map(e => {
+    // Only version and nonce are number
+    if (e === 'version' || e === 'nonce') {
+      if (!Number.isInteger(payload[e])) {
+        return false;
+      }
+    } else {
+      if (typeof (payload[e] !== 'string')) {
+        return false;
+      }
+    }
+  })
+  //FIXME: Add signature verification
   return true;
 };
 
@@ -122,9 +162,11 @@ module.exports = {
 
   /**
   * Function that handles the create transaction requests
-  * @param : data { Object } : Message object passed from client through server.js
-  * @param: options { Object } : List of options passed from server.js
-  * @returns: txnId { String } : Transaction hash
+  * @async
+  * @method processCreateTxn
+  * @param { Object } data : Message object passed from client through server.js
+  * @param { Object } options : List of options passed from server.js
+  * @returns { String } : Transaction hash 
   * Throws in the event of error. Caller should catch or delegate these errors
   */
   processCreateTxn: async (data, options) => {
@@ -136,124 +178,162 @@ module.exports = {
       throw new Error('Invalid Tx Json');
     }
 
+    let responseObj = {};
+
     const currentBNum = blockchain.getBlockNum();
     const dir = options.dataPath;
+
+    // Getting data from payload
     const payload = data[0];
-    const senderAddress = zilliqa.util.getAddressFromPublicKey(payload.pubKey);
+    const bnAmount = new BN(payload.amount);
+    const bnGasLimit = new BN(payload.gasLimit);
+    const bnGasPrice = new BN(payload.gasPrice);
+    const bnInvokeGas = new BN(config.constants.gas.CONTRACT_INVOKE_GAS)
+    const deductableZils = bnInvokeGas.mul(bnGasPrice);
+    const senderAddress = zCrypto.getAddressFromPublicKey(payload.pubKey);
+    const txnId = computeTransactionHash(payload);
 
     logVerbose(logLabel, `Sender: ${senderAddress}`);
     const userNonce = walletCtrl.getBalance(senderAddress).nonce;
     logVerbose(logLabel, `User Nonce: ${userNonce}`);
     logVerbose(logLabel, `Payload Nonce: ${payload.nonce}`);
 
-    // check if payload gasPrice is sufficient
-    const blockchainGasPrice = config.blockchain.gasPrice;
-    if (payload.gasPrice < blockchainGasPrice) {
-      throw new Error(
-        `Payload gas price is insufficient. Current gas price is ${
-        config.blockchain.gasPrice
-        }`,
-      );
-    }
+    let receiptInfo = {};
 
-    const transferTransactionCost = config.blockchain.transferGasCost * config.blockchain.gasPrice;
+    try {
 
-    if (payload.nonce !== userNonce + 1) {
-      // payload.nonce is not valid. Deduct gas anyway
-      // FIXME: Waiting for scilla interpreter to return a structured output
-      // about out of gas errors
-      // https://github.com/Zilliqa/scilla/issues/214
-      walletCtrl.deductFunds(senderAddress, transferTransactionCost);
-      logVerbose(logLabel, 'Invalid Nonce');
-      throw new Error('Invalid Tx Json');
-    }
-
-    if (!payload.code && !payload.data) {
-       // p2p token transfer
-      logVerbose(logLabel, 'p2p token tranfer');
-      const bnAmount = new BN(payload.amount); 
-      const bnTxFee = new BN(transferTransactionCost);
-      const totalSum = bnAmount.add(bnTxFee).toNumber();
-      walletCtrl.deductFunds(senderAddress, totalSum);
-      walletCtrl.increaseNonce(senderAddress);
-      walletCtrl.addFunds(payload.to.toLowerCase(), payload.amount);
-    } else {
-      /* contract generation */
-      logVerbose(logLabel, 'Task: Contract Deployment / Create Transaction');
-      // take the sha256 hash of address+nonce, then extract the rightmost 20 bytes
-      const contractAddr = computeContractAddr(senderAddress);
-
-      if (checkOverflow(payload.gasLimit, payload.gasPrice)) {
-        throw new Error('Overflow detected: Invalid gas limit or gas price');
+      if (payload.nonce !== userNonce + 1) {
+        throw new BalanceError('Nonce incorrect');
       }
-      const gasLimitToZil = payload.gasLimit * payload.gasPrice;
-      const gasAndAmount = payload.amount + gasLimitToZil;
-
-      if (!walletCtrl.sufficientFunds(senderAddress, gasAndAmount)) {
-        logVerbose(logLabel, 'Insufficient funds. Returning error to client.');
-        throw new Error('Insufficient funds');
+      // check if payload gasPrice is sufficient
+      const bnBlockchainGasPrice = new BN(config.blockchain.gasPrice);
+      if (bnBlockchainGasPrice.gt(bnGasPrice)) {
+        throw new BalanceError('Insufficient Gas Price')
       }
-      logVerbose(logLabel, `Contract will be deployed at: ${contractAddr}`);
-
-      const responseData = await scillaCtrl.executeScillaRun(
-        payload,
-        contractAddr,
-        dir,
-        currentBNum,
-        payload.gasLimit,
-      );
-      // Deduct funds
-      const nextAddr = responseData.nextAddress;
-      const gasConsumed = payload.gasLimit - responseData.gasRemaining;
-      if (checkOverflow(gasConsumed, payload.gasPrice)) {
-        throw new Error('Overflow detected: Invalid gas limit or gas price');
-      }
-      const gasConsumedInZil = gasConsumed * payload.gasPrice;
 
-      walletCtrl.deductFunds(
-        senderAddress,
-        payload.amount + gasConsumedInZil,
-      );
-      walletCtrl.increaseNonce(senderAddress); // only increase if a contract is successful
+      if (!payload.code && !payload.data) {
+        // p2p token transfer
+        logVerbose(logLabel, 'Transaction Type: P2P Transfer (Type 1)');
+        const bnTransferGas = new BN(config.constants.gas.NORMAL_TRAN_GAS);
+        const bnTransferCostInZils = bnTransferGas.mul(bnGasPrice);
+        const totalSum = bnAmount.add(bnTransferCostInZils);
+        walletCtrl.deductFunds(senderAddress, totalSum);
+        walletCtrl.increaseNonce(senderAddress);
+        walletCtrl.addFunds(payload.toAddr.toLowerCase(), bnAmount);
+        responseObj.Info = 'Non-contract txn, sent to shard';
+        receiptInfo.cumulative_gas = bnTransferGas.toString();
+        receiptInfo.success = true;
+      } else {
+        /* contract creation / invoke transition */
+        logVerbose(logLabel, 'Task: Contract Deployment / Create Transaction');
+        // take the sha256 hash of address+nonce, then extract the rightmost 20 bytes
+        const contractAddr = computeContractAddr(senderAddress);
+
+        // Before the scilla interpreter runs, address should have sufficient zils to pay for gasLimit + amount
+        const bnGasLimitInZils = bnGasLimit.mul(bnGasPrice);
+        const bnAmountRequiredForTx = bnAmount.add(bnGasLimitInZils);
+
+        if (!walletCtrl.sufficientFunds(senderAddress, bnAmountRequiredForTx)) {
+          logVerbose(logLabel, 'Insufficient funds. Returning error to client.');
+          throw new BalanceError('Insufficient balance to process transction');
+        }
 
-      // FIXME: Support multicontract calls
-      if (nextAddr !== '0'.repeat(40) && nextAddr.substring(2) !== senderAddress) {
-        console.log('Multi-contract calls not supported.');
-        throw new Error('Multi-contract calls are not supported yet.');
-      }
+        logVerbose(logLabel, 'Running scilla interpreter now');
+        walletCtrl.increaseNonce(senderAddress);  // Always increase nonce whenever the interpreter is run
+        // Interpreter can throw an InterpreterError
+        const responseData = await scillaCtrl.executeScillaRun(
+          payload,
+          contractAddr,
+          senderAddress,
+          dir,
+          currentBNum
+        );
+        logVerbose(logLabel, 'Scilla interpreter completed');
+
+        const nextAddr = responseData.nextAddress;
+        const bnGasRemaining = new BN(responseData.gasRemaining);
+        const bnGasConsumed = bnGasLimit.sub(bnGasRemaining);
+        const gasConsumedInZil = bnGasPrice.mul(bnGasConsumed);
+        const deductableAmount = gasConsumedInZil.add(bnAmount);
+        logVerbose(logLabel, `Gas Consumed in Zils ${gasConsumedInZil.toString()}`);
+        logVerbose(logLabel, `Gas Consumed: ${bnGasConsumed.toString()}`);
+        walletCtrl.deductFunds(senderAddress, deductableAmount);
+
+        // FIXME: Support multicontract calls
+        if (nextAddr !== '0'.repeat(40) && nextAddr.substring(2) !== senderAddress) {
+          throw new MultiContractError('Multi-contract calls are not supported yet.');
+        }
 
-      // Only update if it is a deployment call
-      if (payload.code && payload.to === '0'.repeat(40)) {
-        // Update address_to_contracts
-        if (senderAddress in createdContractsByUsers) {
-          logVerbose(logLabel, 'User has contracts. Appending to list');
-          createdContractsByUsers[senderAddress].push(contractAddr);
+        // Only update if it is a deployment call
+        if (payload.code && payload.toAddr === '0'.repeat(40)) {
+          logVerbose(logLabel, `Contract deployed at: ${contractAddr}`);
+          responseObj.Info = 'Contract Creation txn, sent to shard';
+          responseObj.ContractAddress = contractAddr;
+
+          // Update address_to_contracts
+          if (senderAddress in createdContractsByUsers) {
+            logVerbose(logLabel, 'User has contracts. Appending to list');
+            createdContractsByUsers[senderAddress].push(contractAddr);
+          } else {
+            logVerbose(logLabel, 'No existing contracts. Creating new entry.');
+            createdContractsByUsers[senderAddress] = [contractAddr];
+          }
         } else {
-          logVerbose(logLabel, 'No existing contracts. Creating new entry.');
-          createdContractsByUsers[senderAddress] = [contractAddr];
+          // Placeholder msg - since there's no shards in Kaya RPC
+          responseObj.Info = 'Contract Txn, Shards Match of the sender and receiver';
         }
-        logVerbose(logLabel, `Addr-to-Contracts: ${createdContractsByUsers}`);
-      }
-    }
 
+        receiptInfo.cumulative_gas = bnGasConsumed.toString();
+        receiptInfo.success = true;
+      }
 
-    /*  Update Transactions */
-    const txnId = computeTransactionHash(payload);
-    logVerbose(logLabel, `Transaction will be logged as ${txnId}`);
-    const txnDetails = {
-      ID: txnId,
-      amount: payload.amount,
-      nonce: payload.nonce,
-      senderPubKey: payload.pubKey,
-      signature: payload.signature,
-      toAddr: payload.to,
-      version: payload.version,
-    };
-    transactions[txnId] = txnDetails;
-
-    return txnId;
+      // Confirms transaction by storing the transaction object in-memory
+      logTransaction(payload, txnId, receiptInfo);
+      logVerbose(logLabel, `Transaction confirmed by the blockchain`);
+
+    } catch (err) {
+      logVerbose(logLabel, 'Transaction is NOT accepted by the blockchain');
+
+      // Incorrect Balance (Amt, Nonce) does NOT increase the nonce value
+      if (err instanceof BalanceError) {
+        console.log(`Balance Error: ${err.message}`);
+        walletCtrl.deductFunds(senderAddress, deductableZils);
+      } else if (err instanceof InterpreterError) {
+        // Note: Core zilliqa current deducts based on the CONSTANT.XML file config
+        console.log('Scilla run is not successful.');
+        // Deducts the amount of gas as specified in the config.constants settings
+        walletCtrl.deductFunds(senderAddress, deductableZils);
+        receiptInfo = {};
+        receiptInfo.cumulative_gas = bnInvokeGas.toString();
+        receiptInfo.success = false;
+        logTransaction(payload, txnId, receiptInfo);
+        logVerbose(logLabel, `Transaction is logged but it is not accepted due to scilla errors.`);
+      } else if (err instanceof MultiContractError) {
+        // Msg: Contract Txn, Sent To Ds
+        console.log('Multi-contract calls not supported.');
+        responseObj.Info = 'Contract Txn, Sent To Ds';
+        // Do not deduct gas for the time being
+      } else {
+        // Propagate uncaught error to client
+        console.log(`Uncaught error`);
+        console.log(err);
+        throw err;
+      }
+    } finally {
+      // Returns output to caller
+      logVerbose(logLabel, `Returning transactionID to user: ${txnId}`);
+      responseObj.TranID = txnId;
+      return responseObj;
+    }
   },
 
+  /**
+   * Given a payload, returns the Transaction object if found
+   * Throws if the payload is invalid
+   * @method processGetTransaction
+   * @param { Object } data - payload object
+   */
+
   processGetTransaction: (data) => {
     if (!data) {
       logVerbose(logLabel, 'Invalid params');
@@ -271,6 +351,12 @@ module.exports = {
     throw new Error('Txn Hash not Present.');
   },
 
+  /**
+   * Retrieves the last 100 transaction hash
+   * @method processGetRecentTransactions
+   * @returns { Object } - 100 transaction hashes
+   */
+
   processGetRecentTransactions: () => {
     logVerbose(logLabel, 'Getting Recent Transactions');
 
@@ -281,10 +367,12 @@ module.exports = {
     return responseObj;
   },
 
-  /*
-  * Function to process GetSmartContract's state, init or code
-  * @params : { String } : enum of either data, init or state
-  */
+  /**
+   * Function to process GetSmartContract's state, init or code
+   * @param { Object } data : data retrieved from payload
+   * @param { String } dataPath : datapath where the state file is stored
+   * @param { String } type - enum of either data, init or state
+   */
   processGetDataFromContract: (data, dataPath, type) => {
 
     const fileType = type.trim().toLowerCase();
@@ -303,11 +391,11 @@ module.exports = {
 
     // checking contract address's validity
     const contractAddress = data[0];
-    if (contractAddress == null || !zilliqa.util.isAddress(contractAddress)) {
+    if (contractAddress == null || !zUtils.validation.isAddress(contractAddress)) {
       consolePrint('Invalid request');
       throw new Error('Address size inappropriate');
     }
-    const filePath = `${dataPath}${contractAddress.toUpperCase()}_${fileType}.${ext}`;
+    const filePath = `${dataPath}${contractAddress.toLowerCase()}_${fileType}.${ext}`;
     logVerbose(logLabel, `Retrieving data from ${filePath}`);
 
     if (!fs.existsSync(filePath)) {
@@ -323,9 +411,14 @@ module.exports = {
     return JSON.parse(responseData);
   },
 
-  /*
-    Function returns the list of smart contracts created by an account
-  */
+  /**
+   * Retrieves the smart contracts for a given address
+   * @method processGetSmartContracts
+   * @param { Object } data : data retrieved from payload
+   * @param { String } dataPath : datapath where the state file is stored
+   * @returns { Object } : All the state for contracts deployed by the address
+   */
+
   processGetSmartContracts: (data, dataPath) => {
     if (!data) {
       logVerbose(logLabel, 'Invalid params');
@@ -336,8 +429,8 @@ module.exports = {
     }
 
     const addr = data[0].toLowerCase();
-    console.log(`Getting smart contracts created by ${addr}`);
-    if (addr == null || !zilliqa.util.isAddress(addr)) {
+    logVerbose(logLabel, `Getting smart contracts created by ${addr}`);
+    if (addr === null || !zUtils.validation.isAddress(addr)) {
       console.log('Invalid request');
       throw new Error('Address size inappropriate');
     }
@@ -350,7 +443,7 @@ module.exports = {
     const contracts = createdContractsByUsers[addr];
 
     contracts.forEach((contractId) => {
-      const statePath = `${dataPath}${contractId.toUpperCase()}_state.json`;
+      const statePath = `${dataPath}${contractId.toLowerCase()}_state.json`;
       if (!fs.existsSync(statePath)) {
         console.log(`No state file found (Contract: ${contractId}`);
         throw new Error('Address does not exist');
diff --git a/package-lock.json b/package-lock.json
index 6491bea..56855d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,27 +1,27 @@
 {
   "name": "kaya-cli",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.0.0-rc.1",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0-rc.1.tgz",
-      "integrity": "sha512-qhQo3GqwqMUv03SxxjcEkWtlkEDvFYrBKbJUn4Dtd9amC2cLkJ3me4iYUVSBbVXWbfbVRalEeVBHzX4aQYKnBg==",
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
+      "integrity": "sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==",
       "dev": true,
       "requires": {
-        "@babel/highlight": "7.0.0-rc.1"
+        "@babel/highlight": "^7.0.0"
       }
     },
     "@babel/highlight": {
-      "version": "7.0.0-rc.1",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0-rc.1.tgz",
-      "integrity": "sha512-5PgPDV6F5s69XNznTcP0za3qH7qgBkr9DVQTXfZtpF+3iEyuIZB1Mjxu52F5CFxgzQUQJoBYHVxtH4Itdb5MgA==",
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
+      "integrity": "sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==",
       "dev": true,
       "requires": {
         "chalk": "^2.0.0",
         "esutils": "^2.0.2",
-        "js-tokens": "^3.0.0"
+        "js-tokens": "^4.0.0"
       },
       "dependencies": {
         "ansi-styles": {
@@ -44,10 +44,16 @@
             "supports-color": "^5.3.0"
           }
         },
+        "js-tokens": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+          "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+          "dev": true
+        },
         "supports-color": {
-          "version": "5.4.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.4.0.tgz",
-          "integrity": "sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==",
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
           "dev": true,
           "requires": {
             "has-flag": "^3.0.0"
@@ -55,6 +61,190 @@
         }
       }
     },
+    "@protobufjs/aspromise": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
+      "integrity": "sha1-m4sMxmPWaafY9vXQiToU00jzD78="
+    },
+    "@protobufjs/base64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/base64/-/base64-1.1.2.tgz",
+      "integrity": "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg=="
+    },
+    "@protobufjs/codegen": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/@protobufjs/codegen/-/codegen-2.0.4.tgz",
+      "integrity": "sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg=="
+    },
+    "@protobufjs/eventemitter": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz",
+      "integrity": "sha1-NVy8mLr61ZePntCV85diHx0Ga3A="
+    },
+    "@protobufjs/fetch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/fetch/-/fetch-1.1.0.tgz",
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+        "fast-deep-equal": {
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+          "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
+          "dev": true
+        },
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           "requires": {
-            "is-accessor-descriptor": "^1.0.0",
-            "is-data-descriptor": "^1.0.0",
-            "kind-of": "^6.0.2"
+            "has-flag": "^3.0.0"
           }
-        },
-        "is-number": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
-          "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
+        }
+      }
+    },
+    "test-exclude": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-4.2.3.tgz",
+      "integrity": "sha512-SYbXgY64PT+4GAL2ocI3HwPa4Q4TBKm0cwAVeKOt/Aoc0gSpNRjJX8w0pA1LMKZ3LBmd8pYBqApFNQLII9kavA==",
+      "dev": true,
+      "requires": {
+        "arrify": "^1.0.1",
+        "micromatch": "^2.3.11",
+        "object-assign": "^4.1.0",
+        "read-pkg-up": "^1.0.1",
+        "require-main-filename": "^1.0.1"
+      },
+      "dependencies": {
+        "find-up": {
+          "version": "1.1.2",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-1.1.2.tgz",
+          "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
           "requires": {
-            "kind-of": "^3.0.2"
-          },
-          "dependencies": {
-            "kind-of": {
-              "version": "3.2.2",
-              "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
-              "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-              "dev": true,
-              "requires": {
-                "is-buffer": "^1.1.5"
-              }
-            }
+            "path-exists": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
           }
         },
-        "isobject": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
-          "dev": true
-        },
-        "kind-of": {
-          "version": "6.0.2",
-          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
-          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
-          "dev": true
-        },
         "load-json-file": {
           "version": "1.1.0",
-          "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
+          "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
           "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
           "dev": true,
           "requires": {
@@ -7923,27 +7833,6 @@
             "strip-bom": "^2.0.0"
           }
         },
-        "micromatch": {
-          "version": "3.1.10",
-          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
-          "integrity": "sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==",
-          "dev": true,
-          "requires": {
-            "arr-diff": "^4.0.0",
-            "array-unique": "^0.3.2",
-            "braces": "^2.3.1",
-            "define-property": "^2.0.2",
-            "extend-shallow": "^3.0.2",
-            "extglob": "^2.0.4",
-            "fragment-cache": "^0.2.1",
-            "kind-of": "^6.0.2",
-            "nanomatch": "^1.2.9",
-            "object.pick": "^1.3.0",
-            "regex-not": "^1.0.0",
-            "snapdragon": "^0.8.1",
-            "to-regex": "^3.0.2"
-          }
-        },
         "path-exists": {
           "version": "2.1.0",
           "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-2.1.0.tgz",
@@ -8147,72 +8036,32 @@
       }
     },
     "uglify-js": {
-      "version": "2.8.29",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-2.8.29.tgz",
-      "integrity": "sha1-KcVzMUgFe7Th913zW3qcty5qWd0=",
+      "version": "3.4.9",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
+      "integrity": "sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==",
       "dev": true,
       "optional": true,
       "requires": {
-        "source-map": "~0.5.1",
-        "uglify-to-browserify": "~1.0.0",
-        "yargs": "~3.10.0"
+        "commander": "~2.17.1",
+        "source-map": "~0.6.1"
       },
       "dependencies": {
-        "camelcase": {
-          "version": "1.2.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
-          "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
-          "dev": true,
-          "optional": true
-        },
-        "cliui": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-2.1.0.tgz",
-          "integrity": "sha1-S0dXYP+AJkx2LDoXGQMukcf+oNE=",
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "center-align": "^0.1.1",
-            "right-align": "^0.1.1",
-            "wordwrap": "0.0.2"
-          }
-        },
-        "decamelize": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
-          "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=",
+        "commander": {
+          "version": "2.17.1",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
+          "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
           "dev": true,
           "optional": true
         },
-        "wordwrap": {
-          "version": "0.0.2",
-          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-          "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
           "dev": true,
           "optional": true
-        },
-        "yargs": {
-          "version": "3.10.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
-          "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
-          "dev": true,
-          "optional": true,
-          "requires": {
-            "camelcase": "^1.0.2",
-            "cliui": "^2.1.0",
-            "decamelize": "^1.0.0",
-            "window-size": "0.1.0"
-          }
         }
       }
     },
-    "uglify-to-browserify": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
-      "integrity": "sha1-bgkk1r2mta/jSeOabWMoUKD4grc=",
-      "dev": true,
-      "optional": true
-    },
     "union-value": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
@@ -8248,6 +8097,11 @@
         }
       }
     },
+    "unorm": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/unorm/-/unorm-1.4.1.tgz",
+      "integrity": "sha1-NkIA1fE2RsqLzURJAnEzVhR5IwA="
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
@@ -8361,11 +8215,6 @@
         "user-home": "^1.1.1"
       }
     },
-    "valid-url": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/valid-url/-/valid-url-1.0.9.tgz",
-      "integrity": "sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA="
-    },
     "validate-npm-package-license": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.3.tgz",
@@ -8421,7 +8270,7 @@
       "dependencies": {
         "minimist": {
           "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
           "dev": true
         }
@@ -8434,12 +8283,23 @@
       "dev": true
     },
     "whatwg-encoding": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.4.tgz",
-      "integrity": "sha512-vM9KWN6MP2mIHZ86ytcyIv7e8Cj3KTfO2nd2c8PFDqcI4bxFmQp83ibq4wadq7rL9l9sZV6o9B0LTt8ygGAAXg==",
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-1.0.5.tgz",
+      "integrity": "sha512-b5lim54JOPN9HtzvK9HFXvBma/rnfFeqsic0hSpjtDbVxR3dJKLc+KB4V6GgiGOvl7CY/KNh8rxSo9DKQrnUEw==",
       "dev": true,
       "requires": {
-        "iconv-lite": "0.4.23"
+        "iconv-lite": "0.4.24"
+      },
+      "dependencies": {
+        "iconv-lite": {
+          "version": "0.4.24",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+          "dev": true,
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        }
       }
     },
     "whatwg-fetch": {
@@ -8448,9 +8308,9 @@
       "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng=="
     },
     "whatwg-mimetype": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.1.0.tgz",
-      "integrity": "sha512-FKxhYLytBQiUKjkYteN71fAUA3g6KpNXoho1isLiLSB3N1G4F35Q5vUxWfKFhBwi5IWF27VE6WxhrnnC+m0Mew==",
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz",
+      "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==",
       "dev": true
     },
     "whatwg-url": {
@@ -8477,13 +8337,6 @@
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho="
     },
-    "window-size": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
-      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
-      "dev": true,
-      "optional": true
-    },
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
@@ -8595,23 +8448,6 @@
       "requires": {
         "camelcase": "^4.1.0"
       }
-    },
-    "zilliqa-js": {
-      "version": "0.1.19",
-      "resolved": "https://registry.npmjs.org/zilliqa-js/-/zilliqa-js-0.1.19.tgz",
-      "integrity": "sha512-V1F57WNDfshexD3/4CI1+pegXF/vWNSeC/PnKyaBGNG0OzeRStsMa/vpCImS8hLIX7kPZXj7NLmZrR7eMjhQmA==",
-      "requires": {
-        "bn.js": "^4.11.8",
-        "bsert": "^0.0.3",
-        "cross-fetch": "^2.2.2",
-        "elliptic": "^6.4.0",
-        "encoding": "^0.1.12",
-        "hash.js": "^1.1.5",
-        "hmac-drbg": "^1.0.1",
-        "randombytes": "^2.0.6",
-        "valid-url": "^1.0.9",
-        "whatwg-fetch": "^2.0.4"
-      }
     }
   }
 }
diff --git a/package.json b/package.json
index b739e15..85c9232 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kaya-cli",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "Zilliqa's RPC Server",
   "main": "server.js",
   "scripts": {
@@ -35,6 +35,7 @@
     "supertest": "^3.1.0"
   },
   "dependencies": {
+    "@zilliqa-js/zilliqa": "^0.2.9",
     "bn.js": "^4.11.8",
     "body-parser": "^1.18.3",
     "colors": "^1.3.0",
@@ -49,7 +50,6 @@
     "request": "^2.88.0",
     "request-promise": "^4.2.2",
     "rimraf": "^2.6.2",
-    "yargs": "^11.0.0",
-    "zilliqa-js": "^0.1.19"
+    "yargs": "^11.0.0"
   }
 }
diff --git a/test/account-fixtures.json b/test/account-fixtures.json
index 6831f7e..ea31d44 100644
--- a/test/account-fixtures.json
+++ b/test/account-fixtures.json
@@ -1,52 +1,52 @@
 {
     "7bb3b0e8a59f3f61d9bff038f4aeb42cae2ecce8": {
         "privateKey": "db11cfa086b92497c8ed5a4cc6edb3a5bfe3a640c43ffb9fc6aa0873c56f2ee3",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "d90f2e538ce0df89c8273cad3b63ec44a3c4ed82": {
         "privateKey": "e53d1c3edaffc7a7bab5418eb836cf75819a82872b4a1a0f1c7fcf5c3e020b89",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "381f4008505e940ad7681ec3468a719060caf796": {
         "privateKey": "d96e9eb5b782a80ea153c937fa83e5948485fbfc8b7e7c069d7b914dbc350aba",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "b028055ea3bc78d759d10663da40d171dec992aa": {
         "privateKey": "e7f59a4beb997a02a13e0d5e025b39a6f0adc64d37bb1e6a849a4863b4680411",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "f6dad9e193fa2959a849b81caf9cb6ecde466771": {
         "privateKey": "589417286a3213dceb37f8f89bd164c3505a4cec9200c61f7c6db13a30a71b45",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "10200e3da08ee88729469d6eabc055cb225821e7": {
         "privateKey": "5430365143ce0154b682301d0ab731897221906a7054bbf5bd83c7663a6cbc40",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "ac941274c3b6a50203cc5e7939b7dad9f32a0c12": {
         "privateKey": "1080d2cca18ace8225354ac021f9977404cee46f1d12e9981af8c36322eac1a4",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "ec902fe17d90203d0bddd943d97b29576ece3177": {
         "privateKey": "254d9924fc1dcdca44ce92d80255c6a0bb690f867abde80e626fbfef4d357004",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "c2035715831ab100ec42e562ce341b834bed1f4c": {
         "privateKey": "b8fc4e270594d87d3f728d0873a38fb0896ea83bd6f96b4f3c9ff0a29122efe4",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     },
     "6cd3667ba79310837e33f0aecbe13688a6cbca32": {
         "privateKey": "b87f4ba7dcd6e60f2cca8352c89904e3993c5b2b0b608d255002edcda6374de4",
-        "amount": 100000,
+        "amount": "1000000",
         "nonce": 0
     }
 }
\ No newline at end of file
diff --git a/test/scripts/CreateTransaction.js b/test/scripts/CreateTransaction.js
deleted file mode 100644
index 2de960a..0000000
--- a/test/scripts/CreateTransaction.js
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- This file is part of kaya.
-  Copyright (c) 2018 - present Zilliqa Research Pvt. Ltd.
-
-  kaya is free software: you can redistribute it and/or modify it under the
-  terms of the GNU General Public License as published by the Free Software
-  Foundation, either version 3 of the License, or (at your option) any later
-  version.
-
-  kaya is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along with
-  kaya.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-require("isomorphic-fetch");
-const BN = require("bn.js");
-const { Zilliqa } = require("zilliqa-js");
-const { promisify } = require("util");
-const url = "http://localhost:4200";
-const { argv } = require("yargs");
-
-const zilliqa = new Zilliqa({
-  nodeUrl: url,
-});
-
-const makeTxnDetails = (nonceVal) => {
-    txnDetails = {
-        version: 0,
-        nonce: nonceVal,
-        to: recipient,
-        amount: new BN(0),
-        gasPrice: 1,
-        gasLimit: 2000,
-        data: JSON.stringify(msg).replace(/\\"/g, '"'),
-    };
-    return txnDetails;
-};
-
-const getNonceAsync = addr => {
-  return new Promise((resolve, reject) => {
-    zilliqa.node.getBalance({ address: addr }, (err, data) => {
-      if (err || data.error) {
-        reject(err);
-      } else {
-        resolve(data.result.nonce);
-      }
-    });
-  });
-};
-
-let privateKey;
-let recipient;
-
-if (argv.test) {
-  // test mode uses keys from the account fixtures
-  privateKey = "db11cfa086b92497c8ed5a4cc6edb3a5bfe3a640c43ffb9fc6aa0873c56f2ee3";
-  recipient = "cef48d2ec4086bd5799b659261948daab02b760d";
-} else {
-  // User supplies the private key through `--key`
-  if (argv.key) {
-    privateKey = argv.key;
-    console.log(`Your Private Key: ${privateKey} \n`);
-  } else {
-    console.log("No private key given! Generating random privatekey.".green);
-    privateKey = zilliqa.util.generatePrivateKey();
-    console.info(`Your Private Key: ${privateKey.toString("hex")}`);
-  }
-
-  if (!argv.to) {
-    console.log("To address required");
-    process.exit(0);
-  }
-  recipient = argv.to;
-}
-
-const senderAddr = zilliqa.util.getAddressFromPrivateKey(privateKey);
-console.log(senderAddr);
-const msg = {
-  _tag: "setHello",
-  _amount: "0",
-  _sender: `0x${senderAddr}`,
-  params: [
-    {
-      vname: "msg",
-      type: "String",
-      value: "Morning",
-    },
-  ],
-};
-
-
-/*
-*   Main Logic
-*/
-
-// Get user's nonce and increment it by one before sending transaction
-getNonceAsync(senderAddr)
-  .then(nonce => {
-    console.log(`User's current nonce: ${nonce}`);
-    const nonceVal = nonce + 1;
-    console.log(`Payload's Nonce is ${nonceVal}`);
-    const xnDetails = makeTxnDetails(nonceVal);
-    const txn = zilliqa.util.createTransactionJson(privateKey, txnDetails);
-    zilliqa.node.createTransaction(txn, (err, data) => {
-        if (err || data.error) {
-          console.log(err);
-        } else {
-          console.log(data);
-        }
-      });
-  })
-  .catch(err => console.log(err));
diff --git a/test/scripts/DeployContract.js b/test/scripts/DeployContract.js
deleted file mode 100644
index 3e03d4c..0000000
--- a/test/scripts/DeployContract.js
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- This file is part of kaya.
-  Copyright (c) 2018 - present Zilliqa Research Pvt. Ltd.
-
-  kaya is free software: you can redistribute it and/or modify it under the
-  terms of the GNU General Public License as published by the Free Software
-  Foundation, either version 3 of the License, or (at your option) any later
-  version.
-
-  kaya is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along with
-  kaya.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-require("isomorphic-fetch");
-const { Zilliqa } = require("zilliqa-js");
-const fs = require("fs");
-const { argv } = require("yargs");
-const BN = require("bn.js");
-
-const url = "http://localhost:4200";
-const zilliqa = new Zilliqa({
-  nodeUrl: url,
-});
-
-const getNonceAsync = addr => {
-  return new Promise((resolve, reject) => {
-    zilliqa.node.getBalance({ address: addr }, (err, data) => {
-      if (err || data.error) {
-        reject(err);
-      } else {
-        resolve(data.result.nonce);
-      }
-    });
-  });
-};
-
-let privateKey;
-let nonceVal;
-if (argv.test) {
-  privateKey = "db11cfa086b92497c8ed5a4cc6edb3a5bfe3a640c43ffb9fc6aa0873c56f2ee3";
-} else {
-  // User supplies the private key through `--key`
-  if (argv.key) {
-    privateKey = argv.key;
-    console.log(`Your Private Key: ${privateKey} \n`);
-  } else {
-    console.log("No private key given! Generating random privatekey.");
-    privateKey = zilliqa.util.generatePrivateKey();
-    console.info(`Your Private Key: ${privateKey.toString("hex")}`);
-  }
-}
-
-console.log("Zilliqa Testing Script");
-console.log(`Connected to ${url}`);
-const address = zilliqa.util.getAddressFromPrivateKey(privateKey);
-const node = zilliqa.getNode();
-
-getNonceAsync(address)
-  .then(currentNonce => {
-    nonceVal = currentNonce + 1;
-
-    console.log(`Address: ${address} User's current nonce: ${currentNonce}`);
-    console.log(`Deploying contract. Nonce of payload: ${nonceVal}`);
-
-    /* Contract specific Parameters */
-
-    const codeStr = fs.readFileSync("contract.scilla", "utf-8");
-    // the immutable initialisation variables
-    const initParams = [
-      {
-        vname: "owner",
-        type: "ByStr20",
-        value: `0x${address}`,
-      },
-      {
-        vname: "_creation_block",
-        type: "BNum",
-        value: "100",
-      },
-    ];
-
-    // transaction details
-    const txnDetails = {
-      version: 0,
-      nonce: nonceVal,
-      to: "0000000000000000000000000000000000000000",
-      amount: new BN(0),
-      gasPrice: 1,
-      gasLimit: 2000,
-      code: codeStr,
-      data: JSON.stringify(initParams).replace(/\\' /g, '"'),
-    };
-    
-    // sign the transaction using util methods
-    const txn = zilliqa.util.createTransactionJson(privateKey, txnDetails);
-
-    // send the transaction to the node
-    node.createTransaction(txn, (err, data) => {
-      if (err || data.error) {
-        console.log(err);
-      } else {
-        console.log(data);
-      }
-    });
-  })
-  .catch(err => console.log(err));
diff --git a/test/scripts/GetState.js b/test/scripts/GetState.js
deleted file mode 100644
index a8652ce..0000000
--- a/test/scripts/GetState.js
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- This file is part of kaya.
-  Copyright (c) 2018 - present Zilliqa Research Pvt. Ltd.
-
-  kaya is free software: you can redistribute it and/or modify it under the
-  terms of the GNU General Public License as published by the Free Software
-  Foundation, either version 3 of the License, or (at your option) any later
-  version.
-
-  kaya is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along with
-  kaya.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-
-// @note: Query calls are best done using simple post requests since no signing
-// mechanism is required
-// Link: https://apidocs.zilliqa.com/#introduction
-
-require('isomorphic-fetch');
-const { Zilliqa } = require('zilliqa-js');
-const { argv } = require('yargs');
-
-const zilliqa = new Zilliqa({
-  nodeUrl: 'http://localhost:4200',
-});
-
-console.log('Zilliqa Testing Script');
-const node = zilliqa.getNode();
-
-let contractAddr;
-if (argv.contract) {
-    contractAddr = argv.contract;
-}
-console.log(`Getting state for ${contractAddr}`);
-node.getSmartContractState({ address: contractAddr }, (err, data) => {
-  if (err || (data.result && data.result.Error)) {
-    console.log(err);
-  } else {
-    console.log(data);
-  }
-});
diff --git a/test/scripts/TransferValue.js b/test/scripts/TransferValue.js
deleted file mode 100644
index 8c03978..0000000
--- a/test/scripts/TransferValue.js
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- This file is part of kaya.
-  Copyright (c) 2018 - present Zilliqa Research Pvt. Ltd.
-
-  kaya is free software: you can redistribute it and/or modify it under the
-  terms of the GNU General Public License as published by the Free Software
-  Foundation, either version 3 of the License, or (at your option) any later
-  version.
-
-  kaya is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along with
-  kaya.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-require('isomorphic-fetch');
-const BN = require('bn.js');
-const { Zilliqa } = require('zilliqa-js');
-const { argv } = require('yargs');
-
-const url = 'http://localhost:4200';
-
-const zilliqa = new Zilliqa({
-  nodeUrl: url
-});
-const node = zilliqa.getNode();
-
-const getNonceAsync = addr => {
-  return new Promise((resolve, reject) => {
-    zilliqa.node.getBalance({ address: addr }, (err, data) => {
-      if (err || data.error) {
-        reject(err);
-      } else {
-        resolve(data.result.nonce);
-      }
-    });
-  });
-};
-
-/*
-  usage: node TransferToken.js --from [private_key] --to [wallet_address]
-*/
-if (argv.help) {
-  console.log(`Usage: node TransferValue --key [private_key] --to
-  [address] --amt [0]`);
-  process.exit(0);
-}
-
-let privateKey, recipientAddress, amount;
-if (argv.test) {
-  // Use test values
-  privateKey = 'db11cfa086b92497c8ed5a4cc6edb3a5bfe3a640c43ffb9fc6aa0873c56f2ee3';
-  recipientAddress = 'd90f2e538ce0df89c8273cad3b63ec44a3c4ed82';
-  amount = 100;
-} else {
-
-  // User supplies the private key through `--key`
-  if (!argv.key) {
-    console.log('Private key must be given');
-    process.exit(1);
-  }
-
-  if (!argv.to) {
-    console.log('Recipient wallet address required');
-    process.exit(1);
-  }
-
-  if (argv.amt && !Number.isNaN(argv.amt)) {
-    if (argv.amt < 0) {
-      console.log('Amount cannot be negative');
-      process.exit(1);
-    }
-    amount = Number(argv.amt);
-  } else {
-    console.log('Invalid amount');
-    process.exit(1);
-  }
-
-  recipientAddress = argv.to;
-  privateKey = argv.key;
-}
-const senderAddress = zilliqa.util.getAddressFromPrivateKey(privateKey);
-
-getNonceAsync(senderAddress)
-  .then(nonceVal => {
-    console.log('Zilliqa Testing Script');
-    console.log(`Connected to ${url}`);
-
-    let currNonce = nonceVal + 1;
-    console.log(`From:  ${senderAddress}`);
-    console.log(`Recipient: ${recipientAddress}`);
-
-    // transaction details - update the nonce yourself.
-    const txnDetails = {
-      version: 0,
-      nonce: currNonce,
-      to: recipientAddress,
-      amount: new BN(amount),
-      gasPrice: 1,
-      gasLimit: 10
-    };
-
-    // sign the transaction using util methods
-    const txn = zilliqa.util.createTransactionJson(privateKey, txnDetails);
-    console.log(txn);
-
-    // send the transaction to the node
-    node.createTransaction(txn, callback);
-
-
-
-  })
-
-
-
-
-function callback(err, data) {
-  if (err || data.error) {
-    console.log(err);
-  } else {
-    console.log(data);
-  }
-}
-
-
-
-
diff --git a/test/scripts/testblockchain.js b/test/scripts/testblockchain.js
new file mode 100644
index 0000000..a732169
--- /dev/null
+++ b/test/scripts/testblockchain.js
@@ -0,0 +1,117 @@
+const { Transaction } = require('@zilliqa-js/account');
+const { BN, Long } = require('@zilliqa-js/util');
+const { Zilliqa } = require('@zilliqa-js/zilliqa');
+
+const zilliqa = new Zilliqa('http://localhost:4200');
+
+// Populate the wallet with an account
+zilliqa.wallet.addByPrivateKey(
+  'db11cfa086b92497c8ed5a4cc6edb3a5bfe3a640c43ffb9fc6aa0873c56f2ee3',
+);
+
+async function testBlockchain() {
+  try {
+    // Send a transaction to the network
+    const tx = await zilliqa.blockchain.createTransaction(
+      zilliqa.transactions.new({
+        version: 1,
+        toAddr: 'd90f2e538ce0df89c8273cad3b63ec44a3c4ed82',
+        amount: new BN(888),
+        gasPrice: new BN(101),
+        // can be `number` if size is <= 2^53 (i.e., window.MAX_SAFE_INTEGER)
+        gasLimit: Long.fromNumber(10),
+      }),
+    );
+    console.log(tx);
+    
+    console.log('Deploying a contract now');
+    // Deploy a contract
+    const code = `(* HelloWorld contract *)
+
+import ListUtils
+
+(***************************************************)
+(*               Associated library                *)
+(***************************************************)
+library HelloWorld
+
+let one_msg =
+  fun (msg : Message) =>
+  let nil_msg = Nil {Message} in
+  Cons {Message} msg nil_msg
+
+let not_owner_code = Int32 1
+let set_hello_code = Int32 2
+
+(***************************************************)
+(*             The contract definition             *)
+(***************************************************)
+
+contract HelloWorld
+(owner: ByStr20)
+
+field welcome_msg : String = ""
+
+transition setHello (msg : String)
+  is_owner = builtin eq owner _sender;
+  match is_owner with
+  | False =>
+    msg = {_tag : "Main"; _recipient : _sender; _amount : Uint128 0; code : not_owner_code};
+    msgs = one_msg msg;
+    send msgs
+  | True =>
+    welcome_msg := msg;
+    msg = {_tag : "Main"; _recipient : _sender; _amount : Uint128 0; code : set_hello_code};
+    msgs = one_msg msg;
+    send msgs
+  end
+end
+
+transition getHello ()
+    r <- welcome_msg;
+    msg = {_tag : "Main"; _recipient : _sender; _amount : Uint128 0; msg : r};
+    msgs = one_msg msg;
+    send msgs
+end`;
+
+    const init = [
+      {
+        vname: 'owner',
+        type: 'ByStr20',
+        // NOTE: all byte strings passed to Scilla contracts _must_ be
+        // prefixed with 0x. Failure to do so will result in the network
+        // rejecting the transaction while consuming gas!
+        value: '0x7bb3b0e8a59f3f61d9bff038f4aeb42cae2ecce8',
+      },
+      // Necessary for local Kaya testing
+      {
+        vname: '_creation_block',
+        type: 'BNum',
+        value: '100'
+      }
+    ];
+
+    // instance of class Contract
+    const contract = zilliqa.contracts.new(code, init);
+
+    const hello = await contract.deploy(new BN(100), Long.fromNumber(5000));
+    console.log(hello);
+
+
+    const callTx = await hello.call('setHello', [
+      {
+        vname: 'msg',
+        type: 'String',
+        value: 'Hello World',
+      },
+    ]);
+    console.log(callTx);
+    const state = await hello.getState();
+    console.log(state);
+  } catch (err) {
+    console.log('Blockchain Error');
+    console.log(err);
+  }
+}
+
+testBlockchain();
diff --git a/test/server.test.js b/test/server.test.js
index 2c2cd6d..831fd21 100644
--- a/test/server.test.js
+++ b/test/server.test.js
@@ -75,7 +75,7 @@ describe('Server Initialization Tests', () => {
         .send(makeQuery("GetBalance", '0'.repeat(40)))
         .then((response1) => {
             expect(response1.statusCode).toBe(200);
-            expect(response1.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": 0, "nonce": 0}});
+            expect(response1.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": "0", "nonce": 0}});
             done();
         });
     });
diff --git a/test/transaction.test.js b/test/transaction.test.js
deleted file mode 100644
index 8c24871..0000000
--- a/test/transaction.test.js
+++ /dev/null
@@ -1,217 +0,0 @@
-/* Transaction tests */
-
-const BN = require('bn.js');
-let { Zilliqa } = require('zilliqa-js');
-const request = require('supertest');
-const app = require('../app');
-const config = require('../config');
-require('isomorphic-fetch');
-
-const makeQuery = (method, params) => {
-    return {
-        "id": "1",
-        "jsonrpc": "2.0",
-        "method": method,
-        "params": [params]
-    }
-}
-
-let zilliqa = new Zilliqa({
-    nodeUrl: 'http://localhost:4200'
-})
-
-const makeTxnDetailsP2P = (recipient, amount, nonce) => {
-    let txnDetails = {
-        version: 0,
-        nonce: nonce,
-        to: recipient ,
-        amount: new BN(amount),
-        gasPrice: config.testconfigs.gasPrice,
-        gasLimit: config.testconfigs.gasLimit
-    };
-    return txnDetails;
-}
-
-/* P2P Transfer (aka payments type transaction) */
-const accounts = app.wallet.getAccounts();
-const alice = Object.keys(accounts)[0];
-const bob = Object.keys(accounts)[1];
-const charlie = Object.keys(accounts)[2];
-const originalAmt = config.wallet.defaultAmt;
-var pastTxn;
-
-
-/*  Start */
-
-describe('Testing (Alice ----100-----> Bob)', () => {
-    test('Alice should have some balance (Address in Small Case)', async (done) => {
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", alice))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": originalAmt, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-
-    test('Alice should have some balance (Address in UpperCase)', async (done) => {
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", alice.toUpperCase()))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": originalAmt, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-
-    // call is successful if a txn hash is returned
-    test('P2P create transaction should return a txn hash', async (done) => {
-        let pk_alice = accounts[alice]['privateKey'];
-        let txnDetails = makeTxnDetailsP2P(bob, config.testconfigs.transferAmt, 1);
-        let jsonQuery = zilliqa.util.createTransactionJson(pk_alice, txnDetails);
-        jsonQuery.amount = config.testconfigs.transferAmt;
-        request(app.expressjs).post('/')
-        .send(makeQuery("CreateTransaction", jsonQuery))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body.result).toHaveLength(64);
-            expect(response.body.result).toBe('849bbfa5774336f4923a731ec9710a328ab9850fd5986d1aea8c33c0930fe717');
-            pastTxn = response.body.result;
-            done();
-        });
-    });
-
-    test('Transaction hash should be retrievable with the correct details', async (done) => {
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetTransaction", pastTxn))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body.result).toHaveProperty('ID');
-            expect(response.body.result).toHaveProperty('amount');
-            expect(response.body.result).toHaveProperty('senderPubKey');
-            expect(response.body.result).toHaveProperty('nonce');
-            expect(response.body.result).toHaveProperty('signature');
-            expect(response.body.result).toHaveProperty('toAddr');
-            expect(response.body.result).toHaveProperty('version');
-            done();
-        });
-    });
-
-    // Check Alice account
-    test('Alice should have correct funds deducted from her account', async (done) => {
-        const transferFee = config.blockchain.gasPrice * config.blockchain.transferGasCost;
-        const expected_bal = originalAmt - config.testconfigs.transferAmt - transferFee;
-
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", alice))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": expected_bal, "nonce": config.wallet.defaultNonce + 1}});
-            done();
-        });
-    });
-
-    // Check Bob account
-    test('Bob should have the correct funds added to his account', async (done) => {
-        const expected_bal = originalAmt + config.testconfigs.transferAmt;
-
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", bob))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": expected_bal, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-
-});
-
-/*
-    Test - Charlie sends zils to some random dude, Ranon,
-    who was not created through the server
-*/
-describe('Testing (Charlie ----100-----> Ranon)', () => {
-    const ranon_addr = '7A8AC37E0BFD6D67E8908569814D724AC1C90DAE';
-
-    test('Charlie should have some balance', async (done) => {
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", charlie))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": originalAmt, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-
-    // call is successful if a txn hash is returned
-
-    test('Transaction should return a txn hash', async (done) => {
-        let pk_charlie = accounts[charlie]['privateKey'];
-        let txnDetails = makeTxnDetailsP2P(ranon_addr, config.testconfigs.transferAmt, 1);
-        let jsonQuery = zilliqa.util.createTransactionJson(pk_charlie, txnDetails);
-        jsonQuery.amount = config.testconfigs.transferAmt;
-        request(app.expressjs).post('/')
-        .send(makeQuery("CreateTransaction", jsonQuery))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body.result).toHaveLength(64);
-            pastTxn = response.body.result;
-            done();
-        });
-    });
-
-    test('Transaction hash should be retrievable with the correct details', async (done) => {
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetTransaction", pastTxn))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body.result).toHaveProperty('ID');
-            expect(response.body.result).toHaveProperty('amount');
-            expect(response.body.result).toHaveProperty('senderPubKey');
-            expect(response.body.result).toHaveProperty('nonce');
-            expect(response.body.result).toHaveProperty('signature');
-            expect(response.body.result).toHaveProperty('toAddr');
-            expect(response.body.result).toHaveProperty('version');
-            done();
-        });
-    });
-
-    // Check Alice account
-    test('Charlie should have correct funds deducted from his account', async (done) => {
-        const transferFee = config.blockchain.gasPrice * config.blockchain.transferGasCost;
-        const expected_bal = originalAmt - config.testconfigs.transferAmt - transferFee;
-
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", charlie))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": expected_bal, "nonce": config.wallet.defaultNonce + 1}});
-            done();
-        });
-    });
-
-    // Check Ranon account
-    test('Ranon should have account initialized and amount transferred', async (done) => {
-        const expected_bal = config.testconfigs.transferAmt;
-
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", ranon_addr))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": expected_bal, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-
-    test('Ranon should have account initialized and amount transferred (Small Case)', async (done) => {
-        const expected_bal = config.testconfigs.transferAmt;
-
-        request(app.expressjs).post('/')
-        .send(makeQuery("GetBalance", ranon_addr.toLowerCase()))
-        .then((response) => {
-            expect(response.statusCode).toBe(200);
-            expect(response.body).toEqual({"id": "1", "jsonrpc": "2.0", "result": {"balance": expected_bal, "nonce": config.wallet.defaultNonce}});
-            done();
-        });
-    });
-});
diff --git a/yarn.lock b/yarn.lock
index ead4c6b..eaa9ba9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,13 @@
 # yarn lockfile v1
 
 
+"@babel/code-frame@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0.tgz#06e2ab19bdb535385559aabb5ba59729482800f8"
+  integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij5HUcajsVcMCpQrcLmtxRbVFTIqmcSkSeYRBFBRxs2FiUqFJDLdiebA==
+  dependencies:
+    "@babel/highlight" "^7.0.0"
+
 "@babel/code-frame@^7.0.0-beta.35":
   version "7.0.0-rc.1"
   resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-rc.1.tgz#5c2154415d6c09959a71845ef519d11157e95d10"
@@ -16,6 +23,187 @@
     esutils "^2.0.2"
     js-tokens "^3.0.0"
 
+"@babel/highlight@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.0.0.tgz#f710c38c8d458e6dd9a201afb637fcb781ce99e4"
+  integrity sha512-UFMC4ZeFC48Tpvj7C8UgLvtkaUuovQX+5xNWrsIoMG8o2z+XFKjKaN9iVmS84dPwVN00W4wPmqvYoZF3EGAsfw==
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^4.0.0"
+
+"@protobufjs/aspromise@^1.1.1", "@protobufjs/aspromise@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/aspromise/-/aspromise-1.1.2.tgz#9b8b0cc663d669a7d8f6f5d0893a14d348f30fbf"
+  integrity sha1-m4sMxmPWaafY9vXQiToU00jzD78=
+
+"@protobufjs/base64@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/base64/-/base64-1.1.2.tgz#4c85730e59b9a1f1f349047dbf24296034bb2735"
+  integrity sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==
+
+"@protobufjs/codegen@^2.0.4":
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/@protobufjs/codegen/-/codegen-2.0.4.tgz#7ef37f0d010fb028ad1ad59722e506d9262815cb"
+  integrity sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg==
+
+"@protobufjs/eventemitter@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz#355cbc98bafad5978f9ed095f397621f1d066b70"
+  integrity sha1-NVy8mLr61ZePntCV85diHx0Ga3A=
+
+"@protobufjs/fetch@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/fetch/-/fetch-1.1.0.tgz#ba99fb598614af65700c1619ff06d454b0d84c45"
+  integrity sha1-upn7WYYUr2VwDBYZ/wbUVLDYTEU=
+  dependencies:
+    "@protobufjs/aspromise" "^1.1.1"
+    "@protobufjs/inquire" "^1.1.0"
+
+"@protobufjs/float@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/float/-/float-1.0.2.tgz#5e9e1abdcb73fc0a7cb8b291df78c8cbd97b87d1"
+  integrity sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E=
+
+"@protobufjs/inquire@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/inquire/-/inquire-1.1.0.tgz#ff200e3e7cf2429e2dcafc1140828e8cc638f089"
+  integrity sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik=
+
+"@protobufjs/path@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/path/-/path-1.1.2.tgz#6cc2b20c5c9ad6ad0dccfd21ca7673d8d7fbf68d"
+  integrity sha1-bMKyDFya1q0NzP0hynZz2Nf79o0=
+
+"@protobufjs/pool@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/pool/-/pool-1.1.0.tgz#09fd15f2d6d3abfa9b65bc366506d6ad7846ff54"
+  integrity sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q=
+
+"@protobufjs/utf8@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/utf8/-/utf8-1.1.0.tgz#a777360b5b39a1a2e5106f8e858f2fd2d060c570"
+  integrity sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA=
+
+"@types/bip39@^2.4.0":
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/@types/bip39/-/bip39-2.4.0.tgz#eee31a14abc8ebbb41a1ff14575c447b18346cbc"
+  integrity sha512-qxJBGh55SPbSGv+91D6H3WOR8vKdA/p8Oc58oK/DTbORgjO6Ebuo8MRzdy2OWi+dw/lxtX4VWJkkCUTSQvhAnw==
+  dependencies:
+    "@types/node" "*"
+
+"@types/bn.js@^4.11.3":
+  version "4.11.3"
+  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.3.tgz#0f09e53e98659b007d7019261ddab9178135df38"
+  integrity sha512-auZ3vEo3UW8tZc9NhF0MTnutKlf+YhsfC3+dwskFcil/EoqqZF60pGuJ2v2Ae1OJTUp3DJnjOJMqrpkmKB904w==
+  dependencies:
+    "@types/node" "*"
+
+"@types/hdkey@^0.7.0":
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/@types/hdkey/-/hdkey-0.7.0.tgz#6734d138e3c597f241be8fae2e60c2949bc3af87"
+  integrity sha512-hS/ueljJBb6i7r7VqhgmBVmDqGKMqQg2nlGIaf71CCG6+iGNE7yeaHgtBWR/wveD+o+K0ma0VE/XweUBHHTQFQ==
+  dependencies:
+    "@types/node" "*"
+
+"@types/long@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/long/-/long-4.0.0.tgz#719551d2352d301ac8b81db732acb6bdc28dbdef"
+  integrity sha512-1w52Nyx4Gq47uuu0EVcsHBxZFJgurQ+rTKS3qMHxR1GY2T8c2AJYd6vZoZ9q1rupaDjU0yT+Jc2XTyXkjeMA+Q==
+
+"@types/node@*", "@types/node@^10.1.0":
+  version "10.12.10"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.10.tgz#4fa76e6598b7de3f0cb6ec3abacc4f59e5b3a2ce"
+  integrity sha512-8xZEYckCbUVgK8Eg7lf5Iy4COKJ5uXlnIOnePN0WUwSQggy9tolM+tDJf7wMOnT/JT/W9xDYIaYggt3mRV2O5w==
+
+"@zilliqa-js/account@0.2.6", "@zilliqa-js/account@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/account/-/account-0.2.6.tgz#9d4bb10841c4975516889b55b4d09ba57c3156aa"
+  integrity sha512-g+FHHl4qlqym01OdjB11cw89QkNcSOO9Psht75oH9qh36kkx8BrvNCfxwJgeN3oGutvlQRDIujfq06ahXmr3ig==
+  dependencies:
+    "@types/bip39" "^2.4.0"
+    "@types/hdkey" "^0.7.0"
+    "@zilliqa-js/core" "0.2.6"
+    "@zilliqa-js/crypto" "0.2.6"
+    "@zilliqa-js/proto" "0.2.6"
+    "@zilliqa-js/util" "0.2.6"
+    bip39 "^2.5.0"
+    hdkey "^1.1.0"
+
+"@zilliqa-js/blockchain@0.2.6", "@zilliqa-js/blockchain@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/blockchain/-/blockchain-0.2.6.tgz#6b3a7d210cf7fa5e351b2a889453bc608135ac91"
+  integrity sha512-jBfdn6tOaa4GgHvzUlm0QnZJLAWpuXK41Hhneq/4FH11I+dUXTjfggJ8ahGVmk1DVL2lRlHDuO67OtPC3qjdqg==
+  dependencies:
+    "@zilliqa-js/account" "0.2.6"
+    "@zilliqa-js/core" "0.2.6"
+    "@zilliqa-js/util" "0.2.6"
+
+"@zilliqa-js/contract@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/contract/-/contract-0.2.6.tgz#6ff28267042180f611971b6a7e0ba8a009c7cfc1"
+  integrity sha512-RflRaPQWKl7r30T1xbhSIUGU6YIW0l1iS2HfAz3G4L2E7JOiYPQuIadKCk286yfvR6pkiiUN1arEqOyf/qlBIg==
+  dependencies:
+    "@zilliqa-js/account" "0.2.6"
+    "@zilliqa-js/blockchain" "0.2.6"
+    "@zilliqa-js/core" "0.2.6"
+    "@zilliqa-js/util" "0.2.6"
+    hash.js "^1.1.5"
+
+"@zilliqa-js/core@0.2.6", "@zilliqa-js/core@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/core/-/core-0.2.6.tgz#9fe0292d4fc432e01a27a869d7762c312a4a117d"
+  integrity sha512-Pu/WLmeLX+LzM/6q4MqG4Xrn6hCZm0Gy2xeQVHvgrLat4lX3FiBNrx+4qMYCSsH3l2M787cdyOlSnIGqG1LOaw==
+  dependencies:
+    axios "^0.18.0"
+    cross-fetch "^2.2.2"
+    mitt "^1.1.3"
+
+"@zilliqa-js/crypto@0.2.6", "@zilliqa-js/crypto@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/crypto/-/crypto-0.2.6.tgz#46986671cd7f065b58fae14ebdea1b36bd1026cb"
+  integrity sha512-Y3ZZtrznMYI6Xr2slEo/k3MbKtmlsIRI5xGeYw9s0fAKM/B7MNu7u83T0hiIWRgnbTjwwmzTAIwlfOqRsHixxw==
+  dependencies:
+    "@zilliqa-js/util" "0.2.6"
+    aes-js "^3.1.1"
+    bsert "^0.0.4"
+    elliptic "^6.4.1"
+    hash.js "^1.1.5"
+    hmac-drbg "^1.0.1"
+    pbkdf2 "^3.0.16"
+    randombytes "^2.0.6"
+    scrypt.js "^0.2.0"
+    uuid "^3.3.2"
+
+"@zilliqa-js/proto@0.2.6":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/proto/-/proto-0.2.6.tgz#ab6bd8adf8bcb604e2ef6d88622ad8a605223776"
+  integrity sha512-GpVTaRyQRSdSXnJMd+3GdeCHrMr0DtLNRNjhw4XkY54k5lQCl4OJF6/+YhRGUofPcP8d3dV4PZfgVsE3XhiCnA==
+  dependencies:
+    protobufjs "^6.8.8"
+
+"@zilliqa-js/util@0.2.6", "@zilliqa-js/util@^0.2.2":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/util/-/util-0.2.6.tgz#c45c8e49d778a4eb6106ce32dc8fa6612f5e8a2f"
+  integrity sha512-4Fu3jmM2AyPVzfGBK3rrLbOzhTPuAIqtVSFxOkQ/HTIhJyidmz8XSJxTYAmxY7rT5EfthMJud5/mMtG6QxBwYw==
+  dependencies:
+    "@types/bn.js" "^4.11.3"
+    "@types/long" "^4.0.0"
+    bn.js "^4.11.8"
+    long "^4.0.0"
+
+"@zilliqa-js/zilliqa@^0.2.2":
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/@zilliqa-js/zilliqa/-/zilliqa-0.2.2.tgz#458acc30b8aa242a84a171dd030d801a45a74ab4"
+  integrity sha512-Q9EUtoIMfs2d8nummDYQnlpnlAG1gQnB0UAWcvXssUp6bs91IxwzQC3oQwg4a5FKU22VYOi8t1T3ovCq4JlIBA==
+  dependencies:
+    "@zilliqa-js/account" "^0.2.2"
+    "@zilliqa-js/blockchain" "^0.2.2"
+    "@zilliqa-js/contract" "^0.2.2"
+    "@zilliqa-js/core" "^0.2.2"
+    "@zilliqa-js/crypto" "^0.2.2"
+    "@zilliqa-js/util" "^0.2.2"
+
 abab@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.0.tgz#aba0ab4c5eee2d4c79d3487d85450fb2376ebb0f"
@@ -37,10 +225,25 @@ acorn-globals@^4.1.0:
   dependencies:
     acorn "^5.0.0"
 
+acorn-jsx@^5.0.0:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.0.1.tgz#32a064fd925429216a09b141102bfdd185fae40e"
+  integrity sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==
+
 acorn@^5.0.0, acorn@^5.5.3:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.1.tgz#f095829297706a7c9776958c0afc8930a9b9d9d8"
 
+acorn@^6.0.2:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.4.tgz#77377e7353b72ec5104550aa2d2097a2fd40b754"
+  integrity sha512-VY4i5EKSKkofY2I+6QLTbTTN/UvEQPCo6eiwzzSaSWfpaDhOmStMCMod6wmuPciNq+XS0faCglFu2lHZpdHUtg==
+
+aes-js@^3.1.1:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.1.2.tgz#db9aabde85d5caabbfc0d4f2a4446960f627146a"
+  integrity sha512-e5pEa2kBnBOgR4Y/p20pskXI74UEz7de8ZGVo58asOtvSVG5YAbJeELPZxOmt+Bnz3rX753YKhfIn4X4l1PPRQ==
+
 ajv@^5.3.0:
   version "5.5.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
@@ -50,6 +253,16 @@ ajv@^5.3.0:
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
 
+ajv@^6.5.3, ajv@^6.6.1:
+  version "6.6.1"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.6.1.tgz#6360f5ed0d80f232cc2b294c362d5dc2e538dd61"
+  integrity sha512-ZoJjft5B+EJBjUyu9C9Hc0OZyPZSSlOF+plzouTrg6UlA8f+e/n8NIgBFG/9tppJtpPWfthHakK7juJdNDODww==
+  dependencies:
+    fast-deep-equal "^2.0.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
 align-text@^0.1.1, align-text@^0.1.3:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/align-text/-/align-text-0.1.4.tgz#0cd90a561093f35d0a99256c22b7069433fad117"
@@ -211,6 +424,14 @@ aws4@^1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
 
+axios@^0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.18.0.tgz#32d53e4851efdc0a11993b6cd000789d70c05102"
+  integrity sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=
+  dependencies:
+    follow-redirects "^1.3.0"
+    is-buffer "^1.1.5"
+
 babel-cli@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-cli/-/babel-cli-6.26.0.tgz#502ab54874d7db88ad00b887a06383ce03d002f1"
@@ -751,24 +972,39 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-bcrypto@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/bcrypto/-/bcrypto-1.1.0.tgz#e2e9aa037b8914cc46efbb5933bd8603a3492099"
-  dependencies:
-    bindings "~1.3.0"
-    bsert "~0.0.4"
-    bufio "~1.0.1"
-    nan "~2.10.0"
-
 binary-extensions@^1.0.0:
   version "1.11.0"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.11.0.tgz#46aa1751fb6a2f93ee5e689bb1087d4b14c6c205"
 
-bindings@~1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.0.tgz#b346f6ecf6a95f5a815c5839fc7cdb22502f1ed7"
+bindings@^1.2.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.1.tgz#21fc7c6d67c18516ec5aaa2815b145ff77b26ea5"
+  integrity sha512-i47mqjF9UbjxJhxGf+pZ6kSxrnI3wBLlnGI2ArWJ4r0VrvDS7ZYXkprq/pLaBWYq4GM0r4zdHY+NNRqEMU7uew==
+
+bip39@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/bip39/-/bip39-2.5.0.tgz#51cbd5179460504a63ea3c000db3f787ca051235"
+  integrity sha512-xwIx/8JKoT2+IPJpFEfXoWdYwP7UVAoUxxLNfGCfVowaJE7yg1Y5B1BVPqlUNsBq5/nGwmFkwRJ8xDW4sX8OdA==
+  dependencies:
+    create-hash "^1.1.0"
+    pbkdf2 "^3.0.9"
+    randombytes "^2.0.1"
+    safe-buffer "^5.0.1"
+    unorm "^1.3.3"
 
-bn.js@^4.11.8, bn.js@^4.4.0:
+bip66@^1.1.3:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/bip66/-/bip66-1.1.5.tgz#01fa8748785ca70955d5011217d1b3139969ca22"
+  integrity sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=
+  dependencies:
+    safe-buffer "^5.0.1"
+
+bluebird@^3.5.0:
+  version "3.5.3"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.3.tgz#7d01c6f9616c9a51ab0f8c549a79dfe6ec33efa7"
+  integrity sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw==
+
+bn.js@^4.11.3, bn.js@^4.11.8, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
 
@@ -846,6 +1082,18 @@ browser-resolve@^1.11.3:
   dependencies:
     resolve "1.1.7"
 
+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==
+  dependencies:
+    buffer-xor "^1.0.3"
+    cipher-base "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.3"
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
 browserslist@^3.2.6:
   version "3.2.8"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-3.2.8.tgz#b0005361d6471f0f5952797a76fc985f1f978fc6"
@@ -853,6 +1101,11 @@ browserslist@^3.2.6:
     caniuse-lite "^1.0.30000844"
     electron-to-chromium "^1.3.47"
 
+bs58@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/bs58/-/bs58-2.0.1.tgz#55908d58f1982aba2008fa1bed8f91998a29bf8d"
+  integrity sha1-VZCNWPGYKrogCPob7Y+RmYopv40=
+
 bser@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/bser/-/bser-2.0.0.tgz#9ac78d3ed5d915804fd87acb158bc797147a1719"
@@ -863,17 +1116,19 @@ bsert@^0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/bsert/-/bsert-0.0.3.tgz#2d6df637ceee6dedd3e4ebd870c7935e23e9e15e"
 
-bsert@~0.0.4:
+bsert@^0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/bsert/-/bsert-0.0.4.tgz#2b3c236357923f0625f948802a5f9b66c0383d0b"
+  integrity sha512-VReLe1aTaHRmf80YLOHUk8ONQ48SjseZP76GlNIDheD5REYByn/Mm9yrtI0/ZCaFrcfxzgpiw1/hMMCUOSMa3w==
 
 buffer-from@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
 
-bufio@~1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/bufio/-/bufio-1.0.1.tgz#525aab28d354031dd97398bfbb48f3f79282b65f"
+buffer-xor@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
+  integrity sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=
 
 builtin-modules@^1.0.0:
   version "1.1.1"
@@ -897,6 +1152,18 @@ cache-base@^1.0.1:
     union-value "^1.0.0"
     unset-value "^1.0.0"
 
+caller-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
+  integrity sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=
+  dependencies:
+    callsites "^0.2.0"
+
+callsites@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
+  integrity sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=
+
 callsites@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-2.0.0.tgz#06eb84f00eea413da86affefacbffb36093b3c50"
@@ -940,14 +1207,20 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.0, chalk@^2.0.1:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
+  integrity sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==
   dependencies:
     ansi-styles "^3.2.1"
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
+chardet@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
+  integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==
+
 chokidar@^1.6.1:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -971,6 +1244,19 @@ ci-info@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.4.0.tgz#4841d53cad49f11b827b648ebde27a6e189b412f"
 
+cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz#8760e4ecc272f4c363532f926d874aae2c1397de"
+  integrity sha512-Kkht5ye6ZGmwv40uUDZztayT2ThLQGfnj/T71N/XzeZeo3nf8foyW7zGTsPYkEya3m5f3cAypH+qe7YOrM1U2Q==
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+circular-json@^0.3.1:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
+  integrity sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==
+
 class-utils@^0.3.5:
   version "0.3.6"
   resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
@@ -980,6 +1266,18 @@ class-utils@^0.3.5:
     isobject "^3.0.0"
     static-extend "^0.1.1"
 
+cli-cursor@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
+  integrity sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=
+  dependencies:
+    restore-cursor "^2.0.0"
+
+cli-width@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
+  integrity sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=
+
 cliui@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cliui/-/cliui-2.1.0.tgz#4b475760ff80264c762c3a1719032e91c7fea0d1"
@@ -1004,6 +1302,14 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
+coinstring@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/coinstring/-/coinstring-2.3.0.tgz#cdb63363a961502404a25afb82c2e26d5ff627a4"
+  integrity sha1-zbYzY6lhUCQEolr7gsLibV/2J6Q=
+  dependencies:
+    bs58 "^2.0.1"
+    create-hash "^1.1.1"
+
 collection-visit@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
@@ -1051,6 +1357,11 @@ console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
 
+contains-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/contains-path/-/contains-path-0.1.0.tgz#fe8cf184ff6670b6baef01a9d4861a5cbec4120a"
+  integrity sha1-/ozxhP9mcLa67wGp1IYaXL7EEgo=
+
 content-disposition@0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
@@ -1094,6 +1405,29 @@ cors@^2.8.4:
     object-assign "^4"
     vary "^1"
 
+create-hash@^1.1.0, create-hash@^1.1.1, create-hash@^1.1.2:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/create-hash/-/create-hash-1.2.0.tgz#889078af11a63756bcfb59bd221996be3a9ef196"
+  integrity sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==
+  dependencies:
+    cipher-base "^1.0.1"
+    inherits "^2.0.1"
+    md5.js "^1.3.4"
+    ripemd160 "^2.0.1"
+    sha.js "^2.4.0"
+
+create-hmac@^1.1.4:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/create-hmac/-/create-hmac-1.1.7.tgz#69170c78b3ab957147b2b8b04572e47ead2243ff"
+  integrity sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==
+  dependencies:
+    cipher-base "^1.0.3"
+    create-hash "^1.1.0"
+    inherits "^2.0.1"
+    ripemd160 "^2.0.0"
+    safe-buffer "^5.0.1"
+    sha.js "^2.4.8"
+
 cross-env@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-5.2.0.tgz#6ecd4c015d5773e614039ee529076669b9d126f2"
@@ -1156,22 +1490,23 @@ debug@2.6.9, debug@^2.1.2, debug@^2.2.0, debug@^2.3.3, debug@^2.6.8, debug@^2.6.
   dependencies:
     ms "2.0.0"
 
-debug@^3.1.0:
+debug@=3.1.0, debug@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   dependencies:
     ms "2.0.0"
 
+debug@^4.0.1:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.0.tgz#373687bffa678b38b1cd91f861b63850035ddc87"
+  integrity sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg==
+  dependencies:
+    ms "^2.1.1"
+
 decamelize@^1.0.0, decamelize@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
-decamelize@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-2.0.0.tgz#656d7bbc8094c4c788ea53c5840908c9c7d063c7"
-  dependencies:
-    xregexp "4.0.0"
-
 decode-uri-component@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
@@ -1253,12 +1588,36 @@ diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
 
+doctrine@1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-1.5.0.tgz#379dce730f6166f76cefa4e6707a159b02c5a6fa"
+  integrity sha1-N53Ocw9hZvds76TmcHoVmwLFpvo=
+  dependencies:
+    esutils "^2.0.2"
+    isarray "^1.0.0"
+
+doctrine@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.1.0.tgz#5cd01fc101621b42c4cd7f5d1a66243716d3f39d"
+  integrity sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==
+  dependencies:
+    esutils "^2.0.2"
+
 domexception@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/domexception/-/domexception-1.0.1.tgz#937442644ca6a31261ef36e3ec677fe805582c90"
   dependencies:
     webidl-conversions "^4.0.2"
 
+drbg.js@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/drbg.js/-/drbg.js-1.0.1.tgz#3e36b6c42b37043823cdbc332d58f31e2445480b"
+  integrity sha1-Pja2xCs3BDgjzbwzLVjzHiRFSAs=
+  dependencies:
+    browserify-aes "^1.0.6"
+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
@@ -1274,7 +1633,7 @@ electron-to-chromium@^1.3.47:
   version "1.3.59"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.59.tgz#6377db04d8d3991d6286c72ed5c3fde6f4aaf112"
 
-elliptic@^6.4.0:
+elliptic@^6.2.3, elliptic@^6.4.0, elliptic@^6.4.1:
   version "6.4.1"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.1.tgz#c2d0b7776911b86722c632c3c06c60f2f819939a"
   dependencies:
@@ -1302,9 +1661,10 @@ error-ex@^1.2.0:
   dependencies:
     is-arrayish "^0.2.1"
 
-es-abstract@^1.5.1:
+es-abstract@^1.5.1, es-abstract@^1.6.1:
   version "1.12.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.12.0.tgz#9dbbdd27c6856f0001421ca18782d786bf8a6165"
+  integrity sha512-C8Fx/0jFmV5IPoMOFPA9P9G5NtqW+4cOPit3MIuvR2t7Ag2K15EJTpxnHAYTzL+aYQJIESYeXZmDBfOBE1HcpA==
   dependencies:
     es-to-primitive "^1.1.1"
     function-bind "^1.1.1"
@@ -1343,6 +1703,138 @@ escodegen@^1.9.1:
   optionalDependencies:
     source-map "~0.6.1"
 
+eslint-config-airbnb-base@^13.1.0:
+  version "13.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-airbnb-base/-/eslint-config-airbnb-base-13.1.0.tgz#b5a1b480b80dfad16433d6c4ad84e6605052c05c"
+  integrity sha512-XWwQtf3U3zIoKO1BbHh6aUhJZQweOwSt4c2JrPDg9FP3Ltv3+YfEv7jIDB8275tVnO/qOHbfuYg3kzw6Je7uWw==
+  dependencies:
+    eslint-restricted-globals "^0.1.1"
+    object.assign "^4.1.0"
+    object.entries "^1.0.4"
+
+eslint-config-prettier@^3.0.1:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-3.3.0.tgz#41afc8d3b852e757f06274ed6c44ca16f939a57d"
+  integrity sha512-Bc3bh5bAcKNvs3HOpSi6EfGA2IIp7EzWcg2tS4vP7stnXu/J1opihHDM7jI9JCIckyIDTgZLSWn7J3HY0j2JfA==
+  dependencies:
+    get-stdin "^6.0.0"
+
+eslint-import-resolver-node@^0.3.1:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.2.tgz#58f15fb839b8d0576ca980413476aab2472db66a"
+  integrity sha512-sfmTqJfPSizWu4aymbPr4Iidp5yKm8yDkHp+Ir3YiTHiiDfxh69mOUsmiqW6RZ9zRXFaF64GtYmN7e+8GHBv6Q==
+  dependencies:
+    debug "^2.6.9"
+    resolve "^1.5.0"
+
+eslint-module-utils@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/eslint-module-utils/-/eslint-module-utils-2.2.0.tgz#b270362cd88b1a48ad308976ce7fa54e98411746"
+  integrity sha1-snA2LNiLGkitMIl2zn+lTphBF0Y=
+  dependencies:
+    debug "^2.6.8"
+    pkg-dir "^1.0.0"
+
+eslint-plugin-import@^2.14.0:
+  version "2.14.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-import/-/eslint-plugin-import-2.14.0.tgz#6b17626d2e3e6ad52cfce8807a845d15e22111a8"
+  integrity sha512-FpuRtniD/AY6sXByma2Wr0TXvXJ4nA/2/04VPlfpmUDPOpOY264x+ILiwnrk/k4RINgDAyFZByxqPUbSQ5YE7g==
+  dependencies:
+    contains-path "^0.1.0"
+    debug "^2.6.8"
+    doctrine "1.5.0"
+    eslint-import-resolver-node "^0.3.1"
+    eslint-module-utils "^2.2.0"
+    has "^1.0.1"
+    lodash "^4.17.4"
+    minimatch "^3.0.3"
+    read-pkg-up "^2.0.0"
+    resolve "^1.6.0"
+
+eslint-plugin-prettier@^2.6.2:
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.7.0.tgz#b4312dcf2c1d965379d7f9d5b5f8aaadc6a45904"
+  integrity sha512-CStQYJgALoQBw3FsBzH0VOVDRnJ/ZimUlpLm226U8qgqYJfPOY/CPK6wyRInMxh73HSKg5wyRwdS4BVYYHwokA==
+  dependencies:
+    fast-diff "^1.1.1"
+    jest-docblock "^21.0.0"
+
+eslint-restricted-globals@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/eslint-restricted-globals/-/eslint-restricted-globals-0.1.1.tgz#35f0d5cbc64c2e3ed62e93b4b1a7af05ba7ed4d7"
+  integrity sha1-NfDVy8ZMLj7WLpO0saevBbp+1Nc=
+
+eslint-scope@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-4.0.0.tgz#50bf3071e9338bcdc43331794a0cb533f0136172"
+  integrity sha512-1G6UTDi7Jc1ELFwnR58HV4fK9OQK4S6N985f166xqXxpjU6plxFISJa2Ba9KCQuFa8RCnj/lSFJbHo7UFDBnUA==
+  dependencies:
+    esrecurse "^4.1.0"
+    estraverse "^4.1.1"
+
+eslint-utils@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-1.3.1.tgz#9a851ba89ee7c460346f97cf8939c7298827e512"
+  integrity sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==
+
+eslint-visitor-keys@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
+  integrity sha512-qzm/XxIbxm/FHyH341ZrbnMUpe+5Bocte9xkmFMzPMjRaZMcXww+MpBptFvtU+79L362nqiLhekCxCxDPaUMBQ==
+
+eslint@^5.5.0:
+  version "5.9.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.9.0.tgz#b234b6d15ef84b5849c6de2af43195a2d59d408e"
+  integrity sha512-g4KWpPdqN0nth+goDNICNXGfJF7nNnepthp46CAlJoJtC5K/cLu3NgCM3AHu1CkJ5Hzt9V0Y0PBAO6Ay/gGb+w==
+  dependencies:
+    "@babel/code-frame" "^7.0.0"
+    ajv "^6.5.3"
+    chalk "^2.1.0"
+    cross-spawn "^6.0.5"
+    debug "^4.0.1"
+    doctrine "^2.1.0"
+    eslint-scope "^4.0.0"
+    eslint-utils "^1.3.1"
+    eslint-visitor-keys "^1.0.0"
+    espree "^4.0.0"
+    esquery "^1.0.1"
+    esutils "^2.0.2"
+    file-entry-cache "^2.0.0"
+    functional-red-black-tree "^1.0.1"
+    glob "^7.1.2"
+    globals "^11.7.0"
+    ignore "^4.0.6"
+    imurmurhash "^0.1.4"
+    inquirer "^6.1.0"
+    is-resolvable "^1.1.0"
+    js-yaml "^3.12.0"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.3.0"
+    lodash "^4.17.5"
+    minimatch "^3.0.4"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    optionator "^0.8.2"
+    path-is-inside "^1.0.2"
+    pluralize "^7.0.0"
+    progress "^2.0.0"
+    regexpp "^2.0.1"
+    require-uncached "^1.0.3"
+    semver "^5.5.1"
+    strip-ansi "^4.0.0"
+    strip-json-comments "^2.0.1"
+    table "^5.0.2"
+    text-table "^0.2.0"
+
+espree@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-4.1.0.tgz#728d5451e0fd156c04384a7ad89ed51ff54eb25f"
+  integrity sha512-I5BycZW6FCVIub93TeVY1s7vjhP9CY6cXCznIRfiig7nRviKZYdRnj/sHEWC6A7WE9RDWOFq9+7OsWSYz8qv2w==
+  dependencies:
+    acorn "^6.0.2"
+    acorn-jsx "^5.0.0"
+    eslint-visitor-keys "^1.0.0"
+
 esprima@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
@@ -1351,9 +1843,24 @@ esprima@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
 
-estraverse@^4.2.0:
+esquery@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/esquery/-/esquery-1.0.1.tgz#406c51658b1f5991a5f9b62b1dc25b00e3e5c708"
+  integrity sha512-SmiyZ5zIWH9VM+SRUReLS5Q8a7GxtRdxEBVZpm98rJM7Sb+A9DVCndXfkeFUd3byderg+EbDkfnevfCwynWaNA==
+  dependencies:
+    estraverse "^4.0.0"
+
+esrecurse@^4.1.0:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.2.1.tgz#007a3b9fdbc2b3bb87e4879ea19c92fdbd3942cf"
+  integrity sha512-64RBB++fIOAXPw3P9cy89qfMlvZEXZkqqJkjqqXIvzP5ezRZjW+lPWjw35UX/3EhUPFYbg5ER4JYgDw4007/DQ==
+  dependencies:
+    estraverse "^4.1.0"
+
+estraverse@^4.0.0, estraverse@^4.1.0, estraverse@^4.1.1, estraverse@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
+  integrity sha1-De4/7TH81GlhjOc0IJn8GvoL2xM=
 
 esutils@^2.0.2:
   version "2.0.2"
@@ -1363,6 +1870,14 @@ etag@~1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
 
+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==
+  dependencies:
+    md5.js "^1.3.4"
+    safe-buffer "^5.1.1"
+
 exec-sh@^0.2.0:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/exec-sh/-/exec-sh-0.2.2.tgz#2a5e7ffcbd7d0ba2755bdecb16e5a427dfbdec36"
@@ -1472,6 +1987,15 @@ extend@^3.0.0, extend@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
 
+external-editor@^3.0.0:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/external-editor/-/external-editor-3.0.3.tgz#5866db29a97826dbe4bf3afd24070ead9ea43a27"
+  integrity sha512-bn71H9+qWoOQKyZDo25mOMVpSmXROAsTJVVVYzrrtol3d4y+AsKjf4Iwl2Q+IuT0kFSQ1qo166UuIwqYq7mGnA==
+  dependencies:
+    chardet "^0.7.0"
+    iconv-lite "^0.4.24"
+    tmp "^0.0.33"
+
 extglob@^0.3.1:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/extglob/-/extglob-0.3.2.tgz#2e18ff3d2f49ab2765cec9023f011daa8d8349a1"
@@ -1503,6 +2027,16 @@ fast-deep-equal@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz#c053477817c86b51daa853c81e059b733d023614"
 
+fast-deep-equal@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
+  integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
+
+fast-diff@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.2.0.tgz#73ee11982d86caaf7959828d519cfe927fac5f03"
+  integrity sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==
+
 fast-json-stable-stringify@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
@@ -1517,6 +2051,21 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "^2.0.0"
 
+figures@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/figures/-/figures-2.0.0.tgz#3ab1a2d2a62c8bfb431a0c94cb797a2fce27c962"
+  integrity sha1-OrGi0qYsi/tDGgyUy3l6L84nyWI=
+  dependencies:
+    escape-string-regexp "^1.0.5"
+
+file-entry-cache@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-2.0.0.tgz#c392990c3e684783d838b8c84a45d8a048458361"
+  integrity sha1-w5KZDD5oR4PYOLjISkXYoEhFg2E=
+  dependencies:
+    flat-cache "^1.2.1"
+    object-assign "^4.0.1"
+
 filename-regex@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
@@ -1566,17 +2115,28 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
-find-up@^2.1.0:
+find-up@^2.0.0, find-up@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
   dependencies:
     locate-path "^2.0.0"
 
-find-up@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+flat-cache@^1.2.1:
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-1.3.4.tgz#2c2ef77525cc2929007dfffa1dd314aa9c9dee6f"
+  integrity sha512-VwyB3Lkgacfik2vhqR4uv2rvebqmDvFu4jlN/C1RzWoJEo8I7z4Q404oiqYCkq41mni8EzQnm95emU9seckwtg==
+  dependencies:
+    circular-json "^0.3.1"
+    graceful-fs "^4.1.2"
+    rimraf "~2.6.2"
+    write "^0.2.1"
+
+follow-redirects@^1.3.0:
+  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:
-    locate-path "^3.0.0"
+    debug "=3.1.0"
 
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"
@@ -1639,10 +2199,15 @@ fsevents@^1.0.0, fsevents@^1.2.3:
     nan "^2.9.2"
     node-pre-gyp "^0.10.0"
 
-function-bind@^1.1.1:
+function-bind@^1.1.0, function-bind@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
 
+functional-red-black-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
+  integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
+
 gauge@~2.7.3:
   version "2.7.4"
   resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
@@ -1660,6 +2225,11 @@ get-caller-file@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
 
+get-stdin@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-6.0.0.tgz#9e09bf712b360ab9225e812048f71fde9c89657b"
+  integrity sha512-jp4tHawyV7+fkkSKyvjuLZswblUtz+SQKzSWnBbii16BuZksJlU1wuBYXY75r+duh/llF1ur6oNwi+2ZzjKZ7g==
+
 get-stream@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
@@ -1698,6 +2268,23 @@ glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@^7.1.3:
+  version "7.1.3"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
+  integrity sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+globals@^11.7.0:
+  version "11.9.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.9.0.tgz#bde236808e987f290768a93d065060d78e6ab249"
+  integrity sha512-5cJVtyXWH8PiJPVLZzzoIizXx944O4OmRro5MWKx5fT4MgcN7OfaMutPeaTdJCCURwbWdhhcCWcKIffPnmTzBg==
+
 globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -1745,6 +2332,11 @@ has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
 
+has-symbols@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
+  integrity sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=
+
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -1782,6 +2374,14 @@ has@^1.0.1:
   dependencies:
     function-bind "^1.1.1"
 
+hash-base@^3.0.0:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.0.4.tgz#5fc8686847ecd73499403319a6b0a3f3f6ae4918"
+  integrity sha1-X8hoaEfs1zSZQDMZprCj8/auSRg=
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
 hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.5:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.5.tgz#e38ab4b85dfb1e0c40fe9265c0e9b54854c23812"
@@ -1789,6 +2389,15 @@ hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.5:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
+hdkey@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/hdkey/-/hdkey-1.1.0.tgz#e74e7b01d2c47f797fa65d1d839adb7a44639f29"
+  integrity sha512-E7aU8pNlWUJbXGjTz/+lKf1LkMcA3hUrC5ZleeizrmLSd++kvf8mSOe3q8CmBDA9j4hdfXO5iY6hGiTUCOV2jQ==
+  dependencies:
+    coinstring "^2.0.0"
+    safe-buffer "^5.1.1"
+    secp256k1 "^3.0.1"
+
 hmac-drbg@^1.0.0, hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
@@ -1850,12 +2459,24 @@ iconv-lite@0.4.23, iconv-lite@^0.4.4, iconv-lite@~0.4.13:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
+iconv-lite@^0.4.24:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
+  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
 ignore-walk@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.1.tgz#a83e62e7d272ac0e3b551aaa82831a19b69f82f8"
   dependencies:
     minimatch "^3.0.4"
 
+ignore@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
+  integrity sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==
+
 import-local@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/import-local/-/import-local-1.0.0.tgz#5e4ffdc03f4fe6c009c6729beb29631c2f8227bc"
@@ -1882,6 +2503,25 @@ ini@~1.3.0:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.5.tgz#eee25f56db1c9ec6085e0c22778083f596abf927"
 
+inquirer@^6.1.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-6.2.0.tgz#51adcd776f661369dc1e894859c2560a224abdd8"
+  integrity sha512-QIEQG4YyQ2UYZGDC4srMZ7BjHOmNk1lR2JQj5UknBapklm6WHA+VVH7N+sUdX3A7NeCfGF8o4X1S3Ao7nAcIeg==
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.0"
+    cli-cursor "^2.1.0"
+    cli-width "^2.0.0"
+    external-editor "^3.0.0"
+    figures "^2.0.0"
+    lodash "^4.17.10"
+    mute-stream "0.0.7"
+    run-async "^2.2.0"
+    rxjs "^6.1.0"
+    string-width "^2.1.0"
+    strip-ansi "^4.0.0"
+    through "^2.3.6"
+
 invariant@^2.2.2, invariant@^2.2.4:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
@@ -2050,12 +2690,22 @@ is-primitive@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
 
+is-promise@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
+  integrity sha1-eaKp7OfwlugPNtKy87wWwf9L8/o=
+
 is-regex@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
   dependencies:
     has "^1.0.1"
 
+is-resolvable@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-resolvable/-/is-resolvable-1.1.0.tgz#fb18f87ce1feb925169c9a407c19318a3206ed88"
+  integrity sha512-qgDYXFSR5WvEfuS5dMj6oTMEbrrSaM0CrFk2Yiq/gXnBvD9pMa2jGXxyhGLfvhZpuMZe18CJpFxAt3CRs42NMg==
+
 is-stream@^1.0.1, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
@@ -2076,7 +2726,7 @@ 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"
 
-isarray@1.0.0, isarray@~1.0.0:
+isarray@1.0.0, isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
 
@@ -2244,6 +2894,11 @@ jest-diff@^23.5.0:
     jest-get-type "^22.1.0"
     pretty-format "^23.5.0"
 
+jest-docblock@^21.0.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
+  integrity sha512-5IZ7sY9dBAYSV+YjQ0Ovb540Ku7AO9Z5o2Cg789xj167iQuZ2cG+z0f3Uct6WeYLbU6aQiM2pCs7sZ+4dotydw==
+
 jest-docblock@^23.2.0:
   version "23.2.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-23.2.0.tgz#f085e1f18548d99fdd69b20207e6fd55d91383a7"
@@ -2463,13 +3118,14 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
-"js-tokens@^3.0.0 || ^4.0.0":
+"js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
 
-js-yaml@^3.7.0:
+js-yaml@^3.12.0, js-yaml@^3.7.0:
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.0.tgz#eaed656ec8344f10f527c6bfa1b6e2244de167d1"
+  integrity sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"
@@ -2521,10 +3177,20 @@ json-schema-traverse@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz#349a6d44c53a51de89b40805c5d5e59b417d3340"
 
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
 json-schema@0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
 
+json-stable-stringify-without-jsonify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
+  integrity sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=
+
 json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
@@ -2584,9 +3250,10 @@ leven@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/leven/-/leven-2.1.0.tgz#c2e7a9f772094dee9d34202ae8acce4687875580"
 
-levn@~0.3.0:
+levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
+  integrity sha1-OwmSTt+fCDwEkP3UwLxEIeBHZO4=
   dependencies:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
@@ -2601,6 +3268,16 @@ load-json-file@^1.0.0:
     pinkie-promise "^2.0.0"
     strip-bom "^2.0.0"
 
+load-json-file@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-2.0.0.tgz#7947e42149af80d696cbf797bcaabcfe1fe29ca8"
+  integrity sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=
+  dependencies:
+    graceful-fs "^4.1.2"
+    parse-json "^2.2.0"
+    pify "^2.0.0"
+    strip-bom "^3.0.0"
+
 locate-path@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
@@ -2608,13 +3285,6 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
-locate-path@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
-  dependencies:
-    p-locate "^3.0.0"
-    path-exists "^3.0.0"
-
 lodash.sortby@^4.7.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
@@ -2623,6 +3293,16 @@ lodash@^4.13.1, lodash@^4.17.10, lodash@^4.17.4:
   version "4.17.10"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
 
+lodash@^4.17.11, lodash@^4.17.5:
+  version "4.17.11"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+
+long@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/long/-/long-4.0.0.tgz#9a7b71cfb7d361a194ea555241c92f7468d5bf28"
+  integrity sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA==
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -2660,6 +3340,15 @@ math-random@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/math-random/-/math-random-1.0.1.tgz#8b3aac588b8a66e4975e3cdea67f7bb329601fac"
 
+md5.js@^1.3.4:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.5.tgz#b5d07b8e3216e3e27cd728d72f70d1e6a342005f"
+  integrity sha512-xitP+WxNPcTTOgnTJcrhM0xvdPepipPSf3I8EIpGKeFLjt3PlJLIDG3u8EX53ZIubkb+5U2+3rELYpEhHhzdkg==
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+    safe-buffer "^5.1.2"
+
 media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
@@ -2785,6 +3474,11 @@ minizlib@^1.1.0:
   dependencies:
     minipass "^2.2.1"
 
+mitt@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/mitt/-/mitt-1.1.3.tgz#528c506238a05dce11cd914a741ea2cc332da9b8"
+  integrity sha512-mUDCnVNsAi+eD6qA0HkRkwYczbLHJ49z17BGe2PYRhZL4wpZUFZGJHU7/5tmvohoma+Hdn0Vh/oJTiPEmgSruA==
+
 mixin-deep@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.1.tgz#a49e7268dce1a0d9698e45326c5626df3543d0fe"
@@ -2798,11 +3492,31 @@ mkdirp@^0.5.0, mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
+moment@^2.22.2:
+  version "2.22.2"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.22.2.tgz#3c257f9839fc0e93ff53149632239eb90783ff66"
+  integrity sha1-PCV/mDn8DpP/UxSWMiOeuQeD/2Y=
+
 ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
-nan@^2.9.2, nan@~2.10.0:
+ms@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+  integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
+
+mute-stream@0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
+  integrity sha1-MHXOk7whuPq0PhvE2n6BFe0ee6s=
+
+nan@^2.0.8, nan@^2.2.1:
+  version "2.11.1"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.11.1.tgz#90e22bccb8ca57ea4cd37cc83d3819b52eea6766"
+  integrity sha512-iji6k87OSXa0CcrLl9z+ZiYSuR2o+c0bGuNmXdrhTQTakxytAFsC56SArGYoiHlJlFoHSnvmhpceZJaXkVuOtA==
+
+nan@^2.9.2:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.10.0.tgz#96d0cd610ebd58d4b4de9cc0c6828cda99c7548f"
 
@@ -2945,7 +3659,7 @@ oauth-sign@~0.9.0:
   version "0.9.0"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
 
-object-assign@^4, object-assign@^4.1.0:
+object-assign@^4, object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -2957,7 +3671,7 @@ object-copy@^0.1.0:
     define-property "^0.2.5"
     kind-of "^3.0.3"
 
-object-keys@^1.0.12:
+object-keys@^1.0.11, object-keys@^1.0.12:
   version "1.0.12"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.12.tgz#09c53855377575310cca62f55bb334abff7b3ed2"
 
@@ -2967,6 +3681,26 @@ object-visit@^1.0.0:
   dependencies:
     isobject "^3.0.0"
 
+object.assign@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.0.tgz#968bf1100d7956bb3ca086f006f846b3bc4008da"
+  integrity sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==
+  dependencies:
+    define-properties "^1.1.2"
+    function-bind "^1.1.1"
+    has-symbols "^1.0.0"
+    object-keys "^1.0.11"
+
+object.entries@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/object.entries/-/object.entries-1.0.4.tgz#1bf9a4dd2288f5b33f3a993d257661f05d161a5f"
+  integrity sha1-G/mk3SKI9bM/Opk9JXZh8F0WGl8=
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.6.1"
+    function-bind "^1.1.0"
+    has "^1.0.1"
+
 object.getownpropertydescriptors@^2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
@@ -2999,6 +3733,13 @@ once@^1.3.0, once@^1.4.0:
   dependencies:
     wrappy "1"
 
+onetime@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/onetime/-/onetime-2.0.1.tgz#067428230fd67443b2794b22bba528b6867962d4"
+  integrity sha1-BnQoIw/WdEOyeUsiu6UotoZ5YtQ=
+  dependencies:
+    mimic-fn "^1.0.0"
+
 optimist@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
@@ -3006,9 +3747,10 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
-optionator@^0.8.1:
+optionator@^0.8.1, optionator@^0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"
+  integrity sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=
   dependencies:
     deep-is "~0.1.3"
     fast-levenshtein "~2.0.4"
@@ -3029,7 +3771,7 @@ os-locale@^2.0.0:
     lcid "^1.0.0"
     mem "^1.1.0"
 
-os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
+os-tmpdir@^1.0.0, os-tmpdir@^1.0.1, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
 
@@ -3058,32 +3800,16 @@ p-limit@^1.1.0:
   dependencies:
     p-try "^1.0.0"
 
-p-limit@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.0.0.tgz#e624ed54ee8c460a778b3c9f3670496ff8a57aec"
-  dependencies:
-    p-try "^2.0.0"
-
 p-locate@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
   dependencies:
     p-limit "^1.1.0"
 
-p-locate@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
-  dependencies:
-    p-limit "^2.0.0"
-
 p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
 
-p-try@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.0.0.tgz#85080bb87c64688fa47996fe8f7dfbe8211760b1"
-
 parse-glob@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/parse-glob/-/parse-glob-3.0.4.tgz#b2c376cfb11f35513badd173ef0bb6e3a388391c"
@@ -3125,6 +3851,11 @@ path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
 
+path-is-inside@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
+  integrity sha1-NlQX3t5EQw0cEa9hAn+s8HS9/FM=
+
 path-key@^2.0.0, path-key@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
@@ -3145,6 +3876,24 @@ path-type@^1.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
+path-type@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-2.0.0.tgz#f012ccb8415b7096fc2daa1054c3d72389594c73"
+  integrity sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=
+  dependencies:
+    pify "^2.0.0"
+
+pbkdf2@^3.0.16, pbkdf2@^3.0.3, pbkdf2@^3.0.9:
+  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"
+
 performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
@@ -3163,12 +3912,24 @@ pinkie@^2.0.0:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
 
+pkg-dir@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-1.0.0.tgz#7a4b508a8d5bb2d629d447056ff4e9c9314cf3d4"
+  integrity sha1-ektQio1bstYp1EcFb/TpyTFM89Q=
+  dependencies:
+    find-up "^1.0.0"
+
 pkg-dir@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-2.0.0.tgz#f6d5d1109e19d63edf428e0bd57e12777615334b"
   dependencies:
     find-up "^2.1.0"
 
+pluralize@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-7.0.0.tgz#298b89df8b93b0221dbf421ad2b1b1ea23fc6777"
+  integrity sha512-ARhBOdzS3e41FbkW/XWrTEtukqqLoK5+Z/4UeDaLuSW+39JPeFgs4gCGqsrJHVZX0fUrx//4OF0K1CUGwlIFow==
+
 pn@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/pn/-/pn-1.1.0.tgz#e2f4cef0e219f463c179ab37463e4e1ecdccbafb"
@@ -3185,6 +3946,11 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^1.14.2:
+  version "1.15.3"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.3.tgz#1feaac5bdd181237b54dbe65d874e02a1472786a"
+  integrity sha512-gAU9AGAPMaKb3NNSUUuhhFAS7SCO4ALTN4nRIn6PJ075Qd28Yn2Ig2ahEJWdJwJmlEBTUfC7mMUSFy8MwsOCfg==
+
 pretty-format@^23.5.0:
   version "23.5.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-23.5.0.tgz#0f9601ad9da70fe690a269cd3efca732c210687c"
@@ -3200,6 +3966,11 @@ process-nextick-args@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.0.tgz#a37d732f4271b4ab1ad070d35508e8290788ffaa"
 
+progress@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.1.tgz#c9242169342b1c29d275889c95734621b1952e31"
+  integrity sha512-OE+a6vzqazc+K6LxJrX5UPyKFvGnL5CYmq2jFGNIBWHpc4QyE49/YOumcrpQFJpfejmvRtbJzgO1zPmMCqlbBg==
+
 prompts@^0.1.9:
   version "0.1.14"
   resolved "https://registry.yarnpkg.com/prompts/-/prompts-0.1.14.tgz#a8e15c612c5c9ec8f8111847df3337c9cbd443b2"
@@ -3207,6 +3978,25 @@ prompts@^0.1.9:
     kleur "^2.0.1"
     sisteransi "^0.1.1"
 
+protobufjs@^6.8.8:
+  version "6.8.8"
+  resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-6.8.8.tgz#c8b4f1282fd7a90e6f5b109ed11c84af82908e7c"
+  integrity sha512-AAmHtD5pXgZfi7GMpllpO3q1Xw1OYldr+dMUlAnffGTAhqkg72WdmSY71uKBF/JuyiKs8psYbtKrhi0ASCD8qw==
+  dependencies:
+    "@protobufjs/aspromise" "^1.1.2"
+    "@protobufjs/base64" "^1.1.2"
+    "@protobufjs/codegen" "^2.0.4"
+    "@protobufjs/eventemitter" "^1.1.0"
+    "@protobufjs/fetch" "^1.1.0"
+    "@protobufjs/float" "^1.0.2"
+    "@protobufjs/inquire" "^1.1.0"
+    "@protobufjs/path" "^1.1.2"
+    "@protobufjs/pool" "^1.1.0"
+    "@protobufjs/utf8" "^1.1.0"
+    "@types/long" "^4.0.0"
+    "@types/node" "^10.1.0"
+    long "^4.0.0"
+
 proxy-addr@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.4.tgz#ecfc733bf22ff8c6f407fa275327b9ab67e48b93"
@@ -3246,7 +4036,7 @@ randomatic@^3.0.0:
     kind-of "^6.0.0"
     math-random "^1.0.1"
 
-randombytes@^2.0.6:
+randombytes@^2.0.1, randombytes@^2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.0.6.tgz#d302c522948588848a8d300c932b44c24231da80"
   dependencies:
@@ -3290,6 +4080,14 @@ read-pkg-up@^1.0.1:
     find-up "^1.0.0"
     read-pkg "^1.0.0"
 
+read-pkg-up@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-2.0.0.tgz#6b72a8048984e0c41e79510fd5e9fa99b3b549be"
+  integrity sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=
+  dependencies:
+    find-up "^2.0.0"
+    read-pkg "^2.0.0"
+
 read-pkg@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-1.1.0.tgz#f5ffaa5ecd29cb31c0474bca7d756b6bb29e3f28"
@@ -3298,6 +4096,15 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
+read-pkg@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/read-pkg/-/read-pkg-2.0.0.tgz#8ef1c0623c6a6db0dc6713c4bfac46332b2368f8"
+  integrity sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=
+  dependencies:
+    load-json-file "^2.0.0"
+    normalize-package-data "^2.3.2"
+    path-type "^2.0.0"
+
 readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.3.5:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
@@ -3358,6 +4165,11 @@ regex-not@^1.0.0, regex-not@^1.0.2:
     extend-shallow "^3.0.2"
     safe-regex "^1.1.0"
 
+regexpp@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-2.0.1.tgz#8d19d31cf632482b589049f8281f93dbcba4d07f"
+  integrity sha512-lv0M6+TkDVniA3aD1Eg0DVpfU/booSu7Eev3TDO/mZKHBfVjgCGTV4t4buppESEYDtkArYFOxTJWv6S5C+iaNw==
+
 regexpu-core@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-2.0.0.tgz#49d038837b8dcf8bfa5b9a42139938e6ea2ae240"
@@ -3408,9 +4220,20 @@ request-promise-native@^1.0.5:
     stealthy-require "^1.1.0"
     tough-cookie ">=2.3.3"
 
-request@^2.87.0:
+request-promise@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/request-promise/-/request-promise-4.2.2.tgz#d1ea46d654a6ee4f8ee6a4fea1018c22911904b4"
+  integrity sha1-0epG1lSm7k+O5qT+oQGMIpEZBLQ=
+  dependencies:
+    bluebird "^3.5.0"
+    request-promise-core "1.1.1"
+    stealthy-require "^1.1.0"
+    tough-cookie ">=2.3.3"
+
+request@^2.87.0, request@^2.88.0:
   version "2.88.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
+  integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==
   dependencies:
     aws-sign2 "~0.7.0"
     aws4 "^1.8.0"
@@ -3441,12 +4264,25 @@ require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
 
+require-uncached@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/require-uncached/-/require-uncached-1.0.3.tgz#4e0d56d6c9662fd31e43011c4b95aa49955421d3"
+  integrity sha1-Tg1W1slmL9MeQwEcS5WqSZVUIdM=
+  dependencies:
+    caller-path "^0.1.0"
+    resolve-from "^1.0.0"
+
 resolve-cwd@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/resolve-cwd/-/resolve-cwd-2.0.0.tgz#00a9f7387556e27038eae232caa372a6a59b665a"
   dependencies:
     resolve-from "^3.0.0"
 
+resolve-from@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
+  integrity sha1-Jsv+k10a7uq7Kbw/5a6wHpPUQiY=
+
 resolve-from@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
@@ -3459,6 +4295,21 @@ resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
 
+resolve@^1.5.0, resolve@^1.6.0:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.8.1.tgz#82f1ec19a423ac1fbd080b0bab06ba36e84a7a26"
+  integrity sha512-AicPrAC7Qu1JxPCZ9ZgCZlY35QgFnNqc+0LtbRNxnVw4TXvjQ72wnuL9JQcEBgXkI9JM8MsT9kaQoHcpCRJOYA==
+  dependencies:
+    path-parse "^1.0.5"
+
+restore-cursor@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
+  integrity sha1-n37ih/gv0ybU/RYpI9YhKe7g368=
+  dependencies:
+    onetime "^2.0.0"
+    signal-exit "^3.0.2"
+
 ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
@@ -3469,21 +4320,43 @@ right-align@^0.1.1:
   dependencies:
     align-text "^0.1.1"
 
-rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2:
+rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2, rimraf@~2.6.2:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
   dependencies:
     glob "^7.0.5"
 
+ripemd160@^2.0.0, ripemd160@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
+  integrity sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+
 rsvp@^3.3.3:
   version "3.6.2"
   resolved "https://registry.yarnpkg.com/rsvp/-/rsvp-3.6.2.tgz#2e96491599a96cde1b515d5674a8f7a91452926a"
 
+run-async@^2.2.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/run-async/-/run-async-2.3.0.tgz#0371ab4ae0bdd720d4166d7dfda64ff7a445a6c0"
+  integrity sha1-A3GrSuC91yDUFm19/aZP96RFpsA=
+  dependencies:
+    is-promise "^2.1.0"
+
+rxjs@^6.1.0:
+  version "6.3.3"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.3.3.tgz#3c6a7fa420e844a81390fb1158a9ec614f4bad55"
+  integrity sha512-JTWmoY9tWCs7zvIk/CvRjhjGaOd+OVBM987mxFo+OW66cGpdKjZcpmc74ES1sB//7Kl/PAe8+wEakuhG4pcgOw==
+  dependencies:
+    tslib "^1.9.0"
+
 safe-buffer@5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+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"
 
@@ -3516,10 +4389,51 @@ sax@^1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
+scrypt.js@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/scrypt.js/-/scrypt.js-0.2.0.tgz#af8d1465b71e9990110bedfc593b9479e03a8ada"
+  integrity sha1-r40UZbcemZARC+38WTuUeeA6ito=
+  dependencies:
+    scrypt "^6.0.2"
+    scryptsy "^1.2.1"
+
+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 "3.5.2"
+  resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.5.2.tgz#f95f952057310722184fe9c914e6b71281f2f2ae"
+  integrity sha512-iin3kojdybY6NArd+UFsoTuapOF7bnJNf2UbcWXaY3z+E1sJDipl60vtzB5hbO/uquBu7z0fd4VC4Irp+xoFVQ==
+  dependencies:
+    bindings "^1.2.1"
+    bip66 "^1.1.3"
+    bn.js "^4.11.3"
+    create-hash "^1.1.2"
+    drbg.js "^1.0.1"
+    elliptic "^6.2.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
 "semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.4.1, semver@^5.5.0:
   version "5.5.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.1.tgz#7dfdd8814bdb7cabc7be0fb1d734cfb66c940477"
 
+semver@^5.5.1:
+  version "5.6.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
+  integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
+
 send@0.16.2:
   version "0.16.2"
   resolved "https://registry.yarnpkg.com/send/-/send-0.16.2.tgz#6ecca1e0f8c156d141597559848df64730a6bbc1"
@@ -3581,6 +4495,14 @@ setprototypeof@1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.0.tgz#d0bd85536887b6fe7c0d818cb962d9d91c54e656"
 
+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"
+  integrity sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -3607,6 +4529,15 @@ slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
 
+slice-ansi@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-2.0.0.tgz#5373bdb8559b45676e8541c66916cdd6251612e7"
+  integrity sha512-4j2WTWjp3GsZ+AOagyzVbzp4vWGtZ0hEZ/gDY/uTvm6MTxUfTUIsnMIFb1bn8o0RuXiqUw15H1bue8f22Vw2oQ==
+  dependencies:
+    ansi-styles "^3.2.0"
+    astral-regex "^1.0.0"
+    is-fullwidth-code-point "^2.0.0"
+
 snapdragon-node@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
@@ -3760,7 +4691,7 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.1:
+"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.0, string-width@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies:
@@ -3799,7 +4730,7 @@ strip-eof@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
 
-strip-json-comments@~2.0.1:
+strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
@@ -3860,6 +4791,16 @@ symbol-tree@^3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
 
+table@^5.0.2:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/table/-/table-5.1.1.tgz#92030192f1b7b51b6eeab23ed416862e47b70837"
+  integrity sha512-NUjapYb/qd4PeFW03HnAuOJ7OMcBkJlqeClWxeNlQ0lXGSb52oZXGzkO0/I0ARegQ2eUT1g2VDJH0eUxDRcHmw==
+  dependencies:
+    ajv "^6.6.1"
+    lodash "^4.17.11"
+    slice-ansi "2.0.0"
+    string-width "^2.1.1"
+
 tar@^4:
   version "4.4.6"
   resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.6.tgz#63110f09c00b4e60ac8bcfe1bf3c8660235fbc9b"
@@ -3882,10 +4823,27 @@ test-exclude@^4.2.1:
     read-pkg-up "^1.0.1"
     require-main-filename "^1.0.1"
 
+text-table@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
+  integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
+
 throat@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/throat/-/throat-4.1.0.tgz#89037cbc92c56ab18926e6ba4cbb200e15672a6a"
 
+through@^2.3.6:
+  version "2.3.8"
+  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
+  integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
+
+tmp@^0.0.33:
+  version "0.0.33"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
+  integrity sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==
+  dependencies:
+    os-tmpdir "~1.0.2"
+
 tmpl@1.0.x:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"
@@ -3933,6 +4891,11 @@ trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
+tslib@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
+  integrity sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==
+
 tunnel-agent@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
@@ -3978,6 +4941,11 @@ union-value@^1.0.0:
     is-extendable "^0.1.1"
     set-value "^0.4.3"
 
+unorm@^1.3.3:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/unorm/-/unorm-1.4.1.tgz#364200d5f13646ca8bcd44490271335614792300"
+  integrity sha1-NkIA1fE2RsqLzURJAnEzVhR5IwA=
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -3989,6 +4957,13 @@ unset-value@^1.0.0:
     has-value "^0.3.1"
     isobject "^3.0.0"
 
+uri-js@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
+  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
+  dependencies:
+    punycode "^2.1.0"
+
 urix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
@@ -4153,6 +5128,13 @@ write-file-atomic@^2.1.0:
     imurmurhash "^0.1.4"
     signal-exit "^3.0.2"
 
+write@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
+  integrity sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=
+  dependencies:
+    mkdirp "^0.5.1"
+
 ws@^5.2.0:
   version "5.2.2"
   resolved "https://registry.yarnpkg.com/ws/-/ws-5.2.2.tgz#dffef14866b8e8dc9133582514d1befaf96e980f"
@@ -4163,18 +5145,10 @@ xml-name-validator@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
 
-xregexp@4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/xregexp/-/xregexp-4.0.0.tgz#e698189de49dd2a18cc5687b05e17c8e43943020"
-
 y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
 
-"y18n@^3.2.1 || ^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
-
 yallist@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
@@ -4183,12 +5157,6 @@ yallist@^3.0.0, yallist@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.0.2.tgz#8452b4bb7e83c7c188d8041c1a837c773d6d8bb9"
 
-yargs-parser@^10.1.0:
-  version "10.1.0"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-10.1.0.tgz#7202265b89f7e9e9f2e5765e0fe735a905edbaa8"
-  dependencies:
-    camelcase "^4.1.0"
-
 yargs-parser@^9.0.2:
   version "9.0.2"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-9.0.2.tgz#9ccf6a43460fe4ed40a9bb68f48d43b8a68cc077"
@@ -4212,23 +5180,6 @@ yargs@^11.0.0:
     y18n "^3.2.1"
     yargs-parser "^9.0.2"
 
-yargs@^12.0.1:
-  version "12.0.1"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-12.0.1.tgz#6432e56123bb4e7c3562115401e98374060261c2"
-  dependencies:
-    cliui "^4.0.0"
-    decamelize "^2.0.0"
-    find-up "^3.0.0"
-    get-caller-file "^1.0.1"
-    os-locale "^2.0.0"
-    require-directory "^2.1.1"
-    require-main-filename "^1.0.1"
-    set-blocking "^2.0.0"
-    string-width "^2.0.0"
-    which-module "^2.0.0"
-    y18n "^3.2.1 || ^4.0.0"
-    yargs-parser "^10.1.0"
-
 yargs@~3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.10.0.tgz#f7ee7bd857dd7c1d2d38c0e74efbd681d1431fd1"
@@ -4238,9 +5189,10 @@ yargs@~3.10.0:
     decamelize "^1.0.0"
     window-size "0.1.0"
 
-zilliqa-js@0.1.8:
-  version "0.1.8"
-  resolved "https://registry.yarnpkg.com/zilliqa-js/-/zilliqa-js-0.1.8.tgz#fc0faad33e7bdf2e85fb714bfc201d61f327d084"
+zilliqa-js@^0.1.19:
+  version "0.1.19"
+  resolved "https://registry.yarnpkg.com/zilliqa-js/-/zilliqa-js-0.1.19.tgz#1ce7dd5a09fe4f4d22f3af3bcad592b49c7758d5"
+  integrity sha512-V1F57WNDfshexD3/4CI1+pegXF/vWNSeC/PnKyaBGNG0OzeRStsMa/vpCImS8hLIX7kPZXj7NLmZrR7eMjhQmA==
   dependencies:
     bn.js "^4.11.8"
     bsert "^0.0.3"