From 46ba09f45b1235888e748ac01f747622b3014e07 Mon Sep 17 00:00:00 2001
From: cebgcontract <99630598+cebgcontract@users.noreply.github.com>
Date: Tue, 23 Aug 2022 11:59:24 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0walletconnectprovider?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 package.json                     |   4 +-
 src/comp/ZWalletConnect.ts       |  97 +++++
 src/index.ts                     |  11 +-
 src/lib/WalletConnect.ts         |   2 +-
 src/lib/WalletConnectProvider.ts | 436 +++++++++++++++++++
 yarn.lock                        | 693 +++++++++++++++++++++++++++++--
 6 files changed, 1197 insertions(+), 46 deletions(-)
 create mode 100644 src/comp/ZWalletConnect.ts
 create mode 100644 src/lib/WalletConnectProvider.ts

diff --git a/package.json b/package.json
index 06aa0c8..4e58cb1 100644
--- a/package.json
+++ b/package.json
@@ -13,11 +13,13 @@
   "license": "ISC",
   "dependencies": {
     "@metamask/eth-sig-util": "^4.0.1",
-    "@walletconnect/client": "^1.8.0",
+    "@walletconnect/core": "^1.8.0",
+    "@walletconnect/http-connection": "^1.8.0",
     "bip39": "^3.0.4",
     "crypto-js": "^4.1.1",
     "ethereumjs-wallet": "^1.0.2",
     "web3": "^1.7.4",
+    "web3-provider-engine": "^16.0.4",
     "whatwg-fetch": "^3.6.2"
   },
   "devDependencies": {
diff --git a/src/comp/ZWalletConnect.ts b/src/comp/ZWalletConnect.ts
new file mode 100644
index 0000000..c5ec865
--- /dev/null
+++ b/src/comp/ZWalletConnect.ts
@@ -0,0 +1,97 @@
+
+import { IChainData } from '..'
+import WalletConnectProvider from '../lib/WalletConnectProvider'
+import { toHexChainId } from '../util/chain.util'
+
+export class ZWalletConnect {
+  provider: WalletConnectProvider
+  constructor(rpc: String) {
+    this.provider = new WalletConnectProvider({
+      rpc
+    })
+    this._subscribeToEvents(this.provider)
+  }
+
+  private _subscribeToEvents(provider: WalletConnectProvider) {
+    this.provider.on('accountsChanged', async(accounts: string[]) => {
+      console.log('accountsChanged: ', accounts)
+      
+    })
+
+    // Subscribe to chainId change
+    this.provider.on('chainChanged', async(chainId: string) => {
+      const chainIdNum = parseInt(chainId)
+      console.log('chainChanged', chainId, chainIdNum)
+    })
+
+    // Subscribe to session disconnection
+    this.provider.on('disconnect', (err: any) => {
+      console.log('disconnect', err)
+    })
+  }
+  /**
+   * @param data 
+   */
+  public async addOrChangeChain(data: IChainData, cb?: () => void) {
+    const onChainChange = (chainId: string) => {
+      console.log('switchEthereumChain: ', chainId)
+      this.provider.removeListener('chainChanged', onChainChange)
+      cb && cb()
+    }
+    this.provider.on('chainChanged', onChainChange)
+
+    try {
+      await this.provider.request({
+        method: 'wallet_addEthereumChain',
+        params: [
+          {
+            chainId: toHexChainId(data.id),
+            chainName: data.name,
+            nativeCurrency: {
+              name: data.symbol,
+              symbol: data.symbol,
+              decimals: data.decimals || 18
+            },
+            blockExplorerUrls: [data.explorerurl],
+            rpcUrls: [data.rpc]
+          }
+        ]
+      })
+      console.log('add chain success')
+    } catch (addError) {
+      console.error('add chain error: ', addError)
+      this.provider.removeListener('chainChanged', onChainChange)
+    }
+  }
+  
+
+  public async signData(signObj: any, signer: string) {
+    const msgParams = JSON.stringify(signObj)
+    const from = signer
+    console.log('clicked, sending personal sign req', 'from', from, msgParams)
+    const params = [from, msgParams]
+    const result: any = await this.sendCmd({
+      method: 'eth_signTypedData_v4',
+      params,
+      from
+    })
+    return result.result
+  }
+
+  public async sendCmd({ method, params, from }: any) {
+    return new Promise((resolve, reject) => {
+      this.provider.sendAsync({
+        method,
+        params,
+        from
+      }, async function(err: any, result: any) {
+        if (err) {
+          reject && reject(err)
+          return
+        }
+        resolve && resolve(result)
+      })
+    })
+  }
+
+}
diff --git a/src/index.ts b/src/index.ts
index cb7123f..3044337 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -32,6 +32,7 @@ import {
 import { signLogin } from "./util/sign.util";
 import { JazzIcon } from "./comp/JazzIcon";
 import { ERC1155Standard } from "./standards/ERC1155Standard";
+import { ZWalletConnect } from "./comp/ZWalletConnect";
 
 
 
@@ -60,6 +61,7 @@ export interface IChainData {
   id: number;
   symbol: string;
   explorerurl: string;
+  decimals?: number
 }
 @singleton
 export default class JCWallet {
@@ -72,12 +74,14 @@ export default class JCWallet {
   public erc20Standard: ERC20Standard;
   public erc721Standard: ERC721Standard;
   public erc1155Standard: ERC1155Standard;
+  public wConnect: ZWalletConnect;
   public mainHandlers = createWalletEvents();
   public data: IAccount[] = [];
   public iconType = "jazz";
   private accountIndex = 0;
+  private walletType: number = 0;
 
-  constructor(password: string) {
+  constructor(type: number, password: string) {
     // this.web3 = new Web3('https://rpc-mainnet.kcc.network')
     if (!password) {
       throw new Error("need password");
@@ -85,14 +89,17 @@ export default class JCWallet {
     if (!checkPassword(password)) {
       throw new Error("password error");
     }
+    this.walletType = type;
     this.password = password;
     savePassword(password);
     var start = Date.now();
-    this.web3 = new Web3("https://rpc-testnet.kcc.network");
+    const rpc = "https://rpc-testnet.kcc.network"
+    this.web3 = new Web3(rpc);
     console.log(`init web3 cost: ${(Date.now() - start) / 1000}`);
     this.erc20Standard = new ERC20Standard(this.web3);
     this.erc721Standard = new ERC721Standard(this.web3);
     this.erc1155Standard = new ERC1155Standard(this.web3);
+    this.wConnect = new ZWalletConnect(rpc);
     start = Date.now();
     this.wallet = this.web3.eth.accounts.wallet.load(
       this.password,
diff --git a/src/lib/WalletConnect.ts b/src/lib/WalletConnect.ts
index 7775535..da96a2e 100644
--- a/src/lib/WalletConnect.ts
+++ b/src/lib/WalletConnect.ts
@@ -12,7 +12,7 @@ export class WalletConnect extends core {
     });
   }
 
-  static getInstance(connectorOpts, pushServerOpts) {
+  static getInstance(connectorOpts, pushServerOpts): WalletConnect {
     if (!this._instance) {
       this._instance = new WalletConnect(connectorOpts, pushServerOpts)
     }
diff --git a/src/lib/WalletConnectProvider.ts b/src/lib/WalletConnectProvider.ts
new file mode 100644
index 0000000..39f8bb0
--- /dev/null
+++ b/src/lib/WalletConnectProvider.ts
@@ -0,0 +1,436 @@
+import { WalletConnect } from "./WalletConnect";
+import HttpConnection from "@walletconnect/http-connection";
+import { payloadId, signingMethods, parsePersonalSign, getRpcUrl } from "@walletconnect/utils";
+import {
+  IRPCMap,
+  IConnector,
+  IJsonRpcRequest,
+  IJsonRpcResponseSuccess,
+  IWalletConnectProviderOptions,
+} from "@walletconnect/types";
+
+const ProviderEngine = require("web3-provider-engine");
+const CacheSubprovider = require("web3-provider-engine/subproviders/cache");
+const FixtureSubprovider = require("web3-provider-engine/subproviders/fixture");
+const FilterSubprovider = require("web3-provider-engine/subproviders/filters");
+const HookedWalletSubprovider = require("web3-provider-engine/subproviders/hooked-wallet");
+const NonceSubprovider = require("web3-provider-engine/subproviders/nonce-tracker");
+const SubscriptionsSubprovider = require("web3-provider-engine/subproviders/subscriptions");
+
+class WalletConnectProvider extends ProviderEngine {
+  public bridge = "https://bridge.walletconnect.org";
+  public rpc: IRPCMap | null = null;
+  public infuraId = "";
+  public http: HttpConnection | null = null;
+  public wc: IConnector;
+  public isConnecting = false;
+  public connected = false;
+  public connectCallbacks: any[] = [];
+  public accounts: string[] = [];
+  public chainId = 1;
+  public rpcUrl = "";
+
+  constructor(opts: IWalletConnectProviderOptions) {
+    super({ pollingInterval: opts.pollingInterval || 8000 });
+    this.bridge = opts.connector
+      ? opts.connector.bridge
+      : opts.bridge || "https://bridge.walletconnect.org";
+    this.qrcode = typeof opts.qrcode === "undefined" || opts.qrcode !== false;
+    this.qrcodeModal = opts.qrcodeModal || this.qrcodeModal;
+    this.qrcodeModalOptions = opts.qrcodeModalOptions;
+    this.wc =
+      opts.connector ||
+      new WalletConnect({
+        bridge: this.bridge,
+        storageId: opts?.storageId,
+        signingMethods: opts?.signingMethods,
+        clientMeta: opts?.clientMeta,
+      }, null);
+    this.rpc = opts.rpc || null;
+    if (
+      !this.rpc &&
+      (!opts.infuraId || typeof opts.infuraId !== "string" || !opts.infuraId.trim())
+    ) {
+      throw new Error("Missing one of the required parameters: rpc or infuraId");
+    }
+    this.infuraId = opts.infuraId || "";
+    this.chainId = opts?.chainId || this.chainId;
+    this.initialize();
+  }
+
+  get isWalletConnect() {
+    return true;
+  }
+
+  get connector() {
+    return this.wc;
+  }
+
+  get walletMeta() {
+    return this.wc.peerMeta;
+  }
+
+  // Connect with a wallet and return the addresses of all available
+  // accounts.
+  enable = async (): Promise<string[]> => {
+    const wc = await this.getWalletConnector();
+    if (wc) {
+      this.start();
+      this.subscribeWalletConnector();
+      return wc.accounts;
+    } else {
+      throw new Error("Failed to connect to WalleConnect");
+    }
+  };
+
+  request = async (payload: any): Promise<any> => {
+    return this.send(payload);
+  };
+
+  send = async (payload: any, callback?: any): Promise<any> => {
+    // Web3 1.0 beta.38 (and above) calls `send` with method and parameters
+    if (typeof payload === "string") {
+      const method = payload;
+      let params = callback;
+      // maintaining the previous behavior where personal_sign could be non-hex string
+      if (method === "personal_sign") {
+        params = parsePersonalSign(params);
+      }
+
+      return this.sendAsyncPromise(method, params);
+    }
+
+    // ensure payload includes id and jsonrpc
+    payload = { id: payloadId(), jsonrpc: "2.0", ...payload };
+
+    // maintaining the previous behavior where personal_sign could be non-hex string
+    if (payload.method === "personal_sign") {
+      payload.params = parsePersonalSign(payload.params);
+    }
+
+    // Web3 1.0 beta.37 (and below) uses `send` with a callback for async queries
+    if (callback) {
+      this.sendAsync(payload, callback);
+      return;
+    }
+
+    if (payload.method === "eth_signTypedData_v4" && this.walletMeta?.name === "MetaMask") {
+      const { result } = await this.handleOtherRequests(payload);
+      return result;
+    } else {
+      return this.sendAsyncPromise(payload.method, payload.params);
+    }
+  };
+
+  onConnect = (callback: any) => {
+    this.connectCallbacks.push(callback);
+  };
+
+  triggerConnect = (result: any) => {
+    if (this.connectCallbacks && this.connectCallbacks.length) {
+      this.connectCallbacks.forEach(callback => callback(result));
+    }
+  };
+
+  async disconnect() {
+    this.close();
+  }
+
+  async close() {
+    const wc = await this.getWalletConnector({ disableSessionCreation: true });
+    await wc.killSession();
+    await this.onDisconnect();
+  }
+
+  async handleRequest(payload: any) {
+    try {
+      let response;
+      let result: any = null;
+      const wc = await this.getWalletConnector();
+      switch (payload.method) {
+        case "wc_killSession":
+          await this.close();
+          result = null;
+          break;
+        case "eth_accounts":
+          result = wc.accounts;
+          break;
+        case "eth_coinbase":
+          result = wc.accounts[0];
+          break;
+        case "eth_chainId":
+          result = wc.chainId;
+          break;
+        case "net_version":
+          result = wc.chainId;
+          break;
+        case "eth_uninstallFilter":
+          this.sendAsync(payload, (_: any) => _);
+          result = true;
+          break;
+        default:
+          response = await this.handleOtherRequests(payload);
+      }
+      if (response) {
+        return response;
+      }
+      return this.formatResponse(payload, result);
+    } catch (error) {
+      this.emit("error", error);
+      throw error;
+    }
+  }
+
+  async handleOtherRequests(payload: any): Promise<IJsonRpcResponseSuccess> {
+    if (!signingMethods.includes(payload.method) && payload.method.startsWith("eth_")) {
+      return this.handleReadRequests(payload);
+    }
+    const wc = await this.getWalletConnector();
+    const result = await wc.sendCustomRequest(payload);
+    return this.formatResponse(payload, result);
+  }
+
+  async handleReadRequests(payload: any): Promise<IJsonRpcResponseSuccess> {
+    if (!this.http) {
+      const error = new Error("HTTP Connection not available");
+      this.emit("error", error);
+      throw error;
+    }
+    return this.http.send(payload);
+  }
+
+  formatResponse(payload: any, result: any) {
+    return {
+      id: payload.id,
+      jsonrpc: payload.jsonrpc,
+      result: result,
+    };
+  }
+
+  // disableSessionCreation - if true, getWalletConnector won't try to create a new session
+  // in case the connector is disconnected
+  getWalletConnector(opts: { disableSessionCreation?: boolean } = {}): Promise<IConnector> {
+    const { disableSessionCreation = false } = opts;
+    return new Promise((resolve, reject) => {
+      const wc = this.wc;
+      if (this.isConnecting) {
+        this.onConnect((x: any) => resolve(x));
+      } else if (!wc.connected && !disableSessionCreation) {
+        this.isConnecting = true;
+        wc.on("modal_closed", () => {
+          reject(new Error("User closed modal"));
+        });
+        wc.createSession({ chainId: this.chainId })
+          .then(() => {
+            wc.on("connect", (error, payload) => {
+              if (error) {
+                this.isConnecting = false;
+                return reject(error);
+              }
+              this.isConnecting = false;
+              this.connected = true;
+              if (payload) {
+                // Handle session update
+                this.updateState(payload.params[0]);
+              }
+              // Emit connect event
+              this.emit("connect");
+              this.triggerConnect(wc);
+              resolve(wc);
+            });
+          })
+          .catch(error => {
+            this.isConnecting = false;
+            reject(error);
+          });
+      } else {
+        if (!this.connected) {
+          this.connected = true;
+          this.updateState(wc.session);
+        }
+        resolve(wc);
+      }
+    });
+  }
+
+  async subscribeWalletConnector() {
+    const wc = await this.getWalletConnector();
+    wc.on("disconnect", error => {
+      if (error) {
+        this.emit("error", error);
+        return;
+      }
+      this.onDisconnect();
+    });
+    wc.on("session_update", (error, payload) => {
+      if (error) {
+        this.emit("error", error);
+        return;
+      }
+      // Handle session update
+      this.updateState(payload.params[0]);
+    });
+  }
+
+  async onDisconnect() {
+    // tslint:disable-next-line:await-promise
+    await this.stop();
+    this.emit("close", 1000, "Connection closed");
+    this.emit("disconnect", 1000, "Connection disconnected");
+    this.connected = false;
+  }
+
+  async updateState(sessionParams: any) {
+    const { accounts, chainId, networkId, rpcUrl } = sessionParams;
+    // Check if accounts changed and trigger event
+    if (!this.accounts || (accounts && this.accounts !== accounts)) {
+      this.accounts = accounts;
+      this.emit("accountsChanged", accounts);
+    }
+    // Check if chainId changed and trigger event
+    if (!this.chainId || (chainId && this.chainId !== chainId)) {
+      this.chainId = chainId;
+      this.emit("chainChanged", chainId);
+    }
+    // Check if networkId changed and trigger event
+    if (!this.networkId || (networkId && this.networkId !== networkId)) {
+      this.networkId = networkId;
+      this.emit("networkChanged", networkId);
+    }
+    // Handle rpcUrl update
+    this.updateRpcUrl(this.chainId, rpcUrl || "");
+  }
+
+  updateRpcUrl(chainId: number, rpcUrl: string | undefined = "") {
+    const rpc = { infuraId: this.infuraId, custom: this.rpc || undefined };
+    rpcUrl = rpcUrl || getRpcUrl(chainId, rpc);
+    if (rpcUrl) {
+      this.rpcUrl = rpcUrl;
+      this.updateHttpConnection();
+    } else {
+      this.emit("error", new Error(`No RPC Url available for chainId: ${chainId}`));
+    }
+  }
+
+  updateHttpConnection() {
+    if (this.rpcUrl) {
+      this.http = new HttpConnection(this.rpcUrl);
+      this.http.on("payload", payload => this.emit("payload", payload));
+      this.http.on("error", error => this.emit("error", error));
+    }
+  }
+
+  sendAsyncPromise(method: string, params: any): Promise<any> {
+    return new Promise((resolve, reject) => {
+      this.sendAsync(
+        {
+          id: payloadId(),
+          jsonrpc: "2.0",
+          method,
+          params: params || [],
+        },
+        (error: any, response: any) => {
+          if (error) {
+            reject(error);
+            return;
+          }
+          resolve(response.result);
+        },
+      );
+    });
+  }
+
+  private initialize() {
+    this.updateRpcUrl(this.chainId);
+    this.addProvider(
+      new FixtureSubprovider({
+        eth_hashrate: "0x00",
+        eth_mining: false,
+        eth_syncing: true,
+        net_listening: true,
+        web3_clientVersion: `WalletConnect/v1.x.x/javascript`,
+      }),
+    );
+    this.addProvider(new CacheSubprovider());
+    this.addProvider(new SubscriptionsSubprovider());
+    this.addProvider(new FilterSubprovider());
+    this.addProvider(new NonceSubprovider());
+    this.addProvider(new HookedWalletSubprovider(this.configWallet()));
+    this.addProvider({
+      handleRequest: async (payload: IJsonRpcRequest, next: any, end: any) => {
+        try {
+          const { error, result } = await this.handleRequest(payload);
+          end(error, result);
+        } catch (error) {
+          end(error);
+        }
+      },
+      setEngine: (_: any) => _,
+    });
+  }
+
+  private configWallet() {
+    return {
+      getAccounts: async (cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const accounts = wc.accounts;
+          if (accounts && accounts.length) {
+            cb(null, accounts);
+          } else {
+            cb(new Error("Failed to get accounts"));
+          }
+        } catch (error) {
+          cb(error);
+        }
+      },
+      processMessage: async (msgParams: { from: string; data: string }, cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const result = await wc.signMessage([msgParams.from, msgParams.data]);
+          cb(null, result);
+        } catch (error) {
+          cb(error);
+        }
+      },
+      processPersonalMessage: async (msgParams: { from: string; data: string }, cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const result = await wc.signPersonalMessage([msgParams.data, msgParams.from]);
+          cb(null, result);
+        } catch (error) {
+          cb(error);
+        }
+      },
+      processSignTransaction: async (txParams: any, cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const result = await wc.signTransaction(txParams);
+          cb(null, result);
+        } catch (error) {
+          cb(error);
+        }
+      },
+      processTransaction: async (txParams: any, cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const result = await wc.sendTransaction(txParams);
+          cb(null, result);
+        } catch (error) {
+          cb(error);
+        }
+      },
+      processTypedMessage: async (msgParams: { from: string; data: string }, cb: any) => {
+        try {
+          const wc = await this.getWalletConnector();
+          const result = await wc.signTypedData([msgParams.from, msgParams.data]);
+          cb(null, result);
+        } catch (error) {
+          cb(error);
+        }
+      },
+    };
+  }
+}
+
+export default WalletConnectProvider;
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index f51eb36..530af44 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -38,6 +38,11 @@
   resolved "https://registry.npmmirror.com/@babel/compat-data/-/compat-data-7.18.6.tgz#8b37d24e88e8e21c499d4328db80577d8882fa53"
   integrity sha512-tzulrgDT0QD6U7BJ4TKVk2SDDg7wlP39P9yAx1RfLy7vP/7rsDRlWVfbWxElslu56+r7QOhB2NSDsabYYruoZQ==
 
+"@babel/compat-data@^7.17.7", "@babel/compat-data@^7.18.8":
+  version "7.18.13"
+  resolved "https://registry.npmmirror.com/@babel/compat-data/-/compat-data-7.18.13.tgz#6aff7b350a1e8c3e40b029e46cbe78e24a913483"
+  integrity sha512-5yUzC5LqyTFp2HLmDoxGQelcdYgSpP9xsnMWBphAscOdFrHSAVbLNzWiy32sVNDqJRDiJK6klfDnAgu6PAGSHw==
+
 "@babel/core@^7.12.3":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/core/-/core-7.18.6.tgz#54a107a3c298aee3fe5e1947a6464b9b6faca03d"
@@ -93,6 +98,16 @@
     browserslist "^4.20.2"
     semver "^6.3.0"
 
+"@babel/helper-compilation-targets@^7.17.7":
+  version "7.18.9"
+  resolved "https://registry.npmmirror.com/@babel/helper-compilation-targets/-/helper-compilation-targets-7.18.9.tgz#69e64f57b524cde3e5ff6cc5a9f4a387ee5563bf"
+  integrity sha512-tzLCyVmqUiFlcFoAPLA/gL9TeYrF61VLNtb+hvkuVaB5SUjW7jcfrglBIX1vUIoT7CLP3bBlIMeyEsIl2eFQNg==
+  dependencies:
+    "@babel/compat-data" "^7.18.8"
+    "@babel/helper-validator-option" "^7.18.6"
+    browserslist "^4.20.2"
+    semver "^6.3.0"
+
 "@babel/helper-create-class-features-plugin@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.18.6.tgz#6f15f8459f3b523b39e00a99982e2c040871ed72"
@@ -128,6 +143,18 @@
     resolve "^1.14.2"
     semver "^6.1.2"
 
+"@babel/helper-define-polyfill-provider@^0.3.2":
+  version "0.3.2"
+  resolved "https://registry.npmmirror.com/@babel/helper-define-polyfill-provider/-/helper-define-polyfill-provider-0.3.2.tgz#bd10d0aca18e8ce012755395b05a79f45eca5073"
+  integrity sha512-r9QJJ+uDWrd+94BSPcP6/de67ygLtvVy6cK4luE6MOuDsZIdoaPBnfSpbO/+LTifjPckbKXRuI9BB/Z2/y3iTg==
+  dependencies:
+    "@babel/helper-compilation-targets" "^7.17.7"
+    "@babel/helper-plugin-utils" "^7.16.7"
+    debug "^4.1.1"
+    lodash.debounce "^4.0.8"
+    resolve "^1.14.2"
+    semver "^6.1.2"
+
 "@babel/helper-environment-visitor@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/helper-environment-visitor/-/helper-environment-visitor-7.18.6.tgz#b7eee2b5b9d70602e59d1a6cad7dd24de7ca6cd7"
@@ -195,6 +222,11 @@
   resolved "https://registry.npmmirror.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.18.6.tgz#9448974dd4fb1d80fefe72e8a0af37809cd30d6d"
   integrity sha512-gvZnm1YAAxh13eJdkb9EWHBnF3eAub3XTLCZEehHT2kWxiKVRL64+ae5Y6Ivne0mVHmMYKT+xWgZO+gQhuLUBg==
 
+"@babel/helper-plugin-utils@^7.16.7", "@babel/helper-plugin-utils@^7.18.9":
+  version "7.18.9"
+  resolved "https://registry.npmmirror.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.18.9.tgz#4b8aea3b069d8cb8a72cdfe28ddf5ceca695ef2f"
+  integrity sha512-aBXPT3bmtLryXaoJLyYPXPlSD4p1ld9aYeR+sJNOZjJJGiOpb+fKfh3NkcCu7J54nUJwCERPBExCCpyCOHnu/w==
+
 "@babel/helper-remap-async-to-generator@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/helper-remap-async-to-generator/-/helper-remap-async-to-generator-7.18.6.tgz#fa1f81acd19daee9d73de297c0308783cd3cfc23"
@@ -738,6 +770,18 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.18.6"
 
+"@babel/plugin-transform-runtime@^7.5.5":
+  version "7.18.10"
+  resolved "https://registry.npmmirror.com/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.18.10.tgz#37d14d1fa810a368fd635d4d1476c0154144a96f"
+  integrity sha512-q5mMeYAdfEbpBAgzl7tBre/la3LeCxmDO1+wMXRdPWbcoMjR3GiXlCLk7JBZVVye0bqTGNMbt0yYVXX1B1jEWQ==
+  dependencies:
+    "@babel/helper-module-imports" "^7.18.6"
+    "@babel/helper-plugin-utils" "^7.18.9"
+    babel-plugin-polyfill-corejs2 "^0.3.2"
+    babel-plugin-polyfill-corejs3 "^0.5.3"
+    babel-plugin-polyfill-regenerator "^0.4.0"
+    semver "^6.3.0"
+
 "@babel/plugin-transform-shorthand-properties@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/plugin-transform-shorthand-properties/-/plugin-transform-shorthand-properties-7.18.6.tgz#6d6df7983d67b195289be24909e3f12a8f664dc9"
@@ -906,6 +950,13 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
+"@babel/runtime@^7.5.5":
+  version "7.18.9"
+  resolved "https://registry.npmmirror.com/@babel/runtime/-/runtime-7.18.9.tgz#b4fcfce55db3d2e5e080d2490f608a3b9f407f4a"
+  integrity sha512-lkqXDcvlFT5rvEjiu6+QYO+1GXrEHRo2LOtS7E4GtX5ESIZOgepqsZBVIj6Pv+a6zqsya9VCgiK1KAK4BvJDAw==
+  dependencies:
+    regenerator-runtime "^0.13.4"
+
 "@babel/template@^7.18.6":
   version "7.18.6"
   resolved "https://registry.npmmirror.com/@babel/template/-/template-7.18.6.tgz#1283f4993e00b929d6e2d3c72fdc9168a2977a31"
@@ -952,7 +1003,7 @@
     crc-32 "^1.2.0"
     ethereumjs-util "^7.1.5"
 
-"@ethereumjs/tx@^3.3.2":
+"@ethereumjs/tx@^3.3.0", "@ethereumjs/tx@^3.3.2":
   version "3.5.2"
   resolved "https://registry.npmmirror.com/@ethereumjs/tx/-/tx-3.5.2.tgz#197b9b6299582ad84f9527ca961466fce2296c1c"
   integrity sha512-gQDNJWKrSDGu2w7w0PzVXVBNMzb7wwdDOmOqczmhNjqFxFuIbhVJDwiGEnxFNC2/b8ifcZzY7MLcluizohRzNw==
@@ -1187,6 +1238,11 @@
     tweetnacl "^1.0.3"
     tweetnacl-util "^0.15.1"
 
+"@metamask/safe-event-emitter@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.npmmirror.com/@metamask/safe-event-emitter/-/safe-event-emitter-2.0.0.tgz#af577b477c683fad17c619a78208cede06f9605c"
+  integrity sha512-/kSXhY692qiV1MXu6EeOZvg5nECLclxNXcKCxJ3cXQgYuRymRHpdx/t7JXfsK+JLjwA1e1c1/SBrlQYpusC29Q==
+
 "@nicolo-ribaudo/chokidar-2@2.1.8-no-fsevents.3":
   version "2.1.8-no-fsevents.3"
   resolved "https://registry.npmmirror.com/@nicolo-ribaudo/chokidar-2/-/chokidar-2-2.1.8-no-fsevents.3.tgz#323d72dd25103d0c4fbdce89dadf574a787b1f9b"
@@ -1273,16 +1329,6 @@
     "@walletconnect/window-metadata" "1.0.0"
     detect-browser "5.2.0"
 
-"@walletconnect/client@^1.8.0":
-  version "1.8.0"
-  resolved "https://registry.npmmirror.com/@walletconnect/client/-/client-1.8.0.tgz#6f46b5499c7c861c651ff1ebe5da5b66225ca696"
-  integrity sha512-svyBQ14NHx6Cs2j4TpkQaBI/2AF4+LXz64FojTjMtV4VMMhl81jSO1vNeg+yYhQzvjcGH/GpSwixjyCW0xFBOQ==
-  dependencies:
-    "@walletconnect/core" "^1.8.0"
-    "@walletconnect/iso-crypto" "^1.8.0"
-    "@walletconnect/types" "^1.8.0"
-    "@walletconnect/utils" "^1.8.0"
-
 "@walletconnect/core@^1.8.0":
   version "1.8.0"
   resolved "https://registry.npmmirror.com/@walletconnect/core/-/core-1.8.0.tgz#6b2748b90c999d9d6a70e52e26a8d5e8bfeaa81e"
@@ -1292,17 +1338,6 @@
     "@walletconnect/types" "^1.8.0"
     "@walletconnect/utils" "^1.8.0"
 
-"@walletconnect/crypto@^1.0.2":
-  version "1.0.2"
-  resolved "https://registry.npmmirror.com/@walletconnect/crypto/-/crypto-1.0.2.tgz#3fcc2b2cde6f529a19eadd883dc555cd0e861992"
-  integrity sha512-+OlNtwieUqVcOpFTvLBvH+9J9pntEqH5evpINHfVxff1XIgwV55PpbdvkHu6r9Ib4WQDOFiD8OeeXs1vHw7xKQ==
-  dependencies:
-    "@walletconnect/encoding" "^1.0.1"
-    "@walletconnect/environment" "^1.0.0"
-    "@walletconnect/randombytes" "^1.0.2"
-    aes-js "^3.1.2"
-    hash.js "^1.1.7"
-
 "@walletconnect/encoding@^1.0.1":
   version "1.0.1"
   resolved "https://registry.npmmirror.com/@walletconnect/encoding/-/encoding-1.0.1.tgz#93c18ce9478c3d5283dbb88c41eb2864b575269a"
@@ -1316,14 +1351,15 @@
   resolved "https://registry.npmmirror.com/@walletconnect/environment/-/environment-1.0.0.tgz#c4545869fa9c389ec88c364e1a5f8178e8ab5034"
   integrity sha512-4BwqyWy6KpSvkocSaV7WR3BlZfrxLbJSLkg+j7Gl6pTDE+U55lLhJvQaMuDVazXYxcjBsG09k7UlH7cGiUI5vQ==
 
-"@walletconnect/iso-crypto@^1.8.0":
+"@walletconnect/http-connection@^1.8.0":
   version "1.8.0"
-  resolved "https://registry.npmmirror.com/@walletconnect/iso-crypto/-/iso-crypto-1.8.0.tgz#44ddf337c4f02837c062dbe33fa7ab36789df451"
-  integrity sha512-pWy19KCyitpfXb70hA73r9FcvklS+FvO9QUIttp3c2mfW8frxgYeRXfxLRCIQTkaYueRKvdqPjbyhPLam508XQ==
+  resolved "https://registry.npmmirror.com/@walletconnect/http-connection/-/http-connection-1.8.0.tgz#c19fff5c179d5180d8b974faef2621bd012adb4e"
+  integrity sha512-IziEr3c53qsMromK7jz0EkbKDHlryRbxXdFR+xaG+S5nfxtUdAfjzlZabvczXdDCgmTij6KbNsZAjBMqCBzACw==
   dependencies:
-    "@walletconnect/crypto" "^1.0.2"
     "@walletconnect/types" "^1.8.0"
     "@walletconnect/utils" "^1.8.0"
+    eventemitter3 "4.0.7"
+    xhr2-cookies "1.1.0"
 
 "@walletconnect/jsonrpc-types@^1.0.1":
   version "1.0.1"
@@ -1340,15 +1376,6 @@
     "@walletconnect/environment" "^1.0.0"
     "@walletconnect/jsonrpc-types" "^1.0.1"
 
-"@walletconnect/randombytes@^1.0.2":
-  version "1.0.2"
-  resolved "https://registry.npmmirror.com/@walletconnect/randombytes/-/randombytes-1.0.2.tgz#95c644251a15e6675f58fbffc9513a01486da49c"
-  integrity sha512-ivgOtAyqQnN0rLQmOFPemsgYGysd/ooLfaDA/ACQ3cyqlca56t3rZc7pXfqJOIETx/wSyoF5XbwL+BqYodw27A==
-  dependencies:
-    "@walletconnect/encoding" "^1.0.1"
-    "@walletconnect/environment" "^1.0.0"
-    randombytes "^2.1.0"
-
 "@walletconnect/safe-json@1.0.0":
   version "1.0.0"
   resolved "https://registry.npmmirror.com/@walletconnect/safe-json/-/safe-json-1.0.0.tgz#12eeb11d43795199c045fafde97e3c91646683b2"
@@ -1570,6 +1597,20 @@
   resolved "https://registry.npmmirror.com/@yarnpkg/lockfile/-/lockfile-1.1.0.tgz#e77a97fbd345b76d83245edcd17d393b1b41fb31"
   integrity sha512-GpSwvyXOcOOlV70vbnzjj4fW5xW/FdUF6nQEt1ENy7m4ZCczi1+/buVUPAqmGfqznsORNFzUMjctTIp8a9tuCQ==
 
+abstract-leveldown@~2.6.0:
+  version "2.6.3"
+  resolved "https://registry.npmmirror.com/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz#1c5e8c6a5ef965ae8c35dfb3a8770c476b82c4b8"
+  integrity sha512-2++wDf/DYqkPR3o5tbfdhF96EfMApo1GpPfzOsR/ZYXdkSmELlvOOEAl9iKkRsktMPHdGjO4rtkBpf2I7TiTeA==
+  dependencies:
+    xtend "~4.0.0"
+
+abstract-leveldown@~2.7.1:
+  version "2.7.2"
+  resolved "https://registry.npmmirror.com/abstract-leveldown/-/abstract-leveldown-2.7.2.tgz#87a44d7ebebc341d59665204834c8b7e0932cc93"
+  integrity sha512-+OVvxH2rHVEhWLdbudP6p0+dNMXu8JA1CbhP19T8paTYAcX7oJ4OVjT+ZUVpv7mITxXHqDMej+GdqXBmXkw09w==
+  dependencies:
+    xtend "~4.0.0"
+
 accepts@~1.3.8:
   version "1.3.8"
   resolved "https://registry.npmmirror.com/accepts/-/accepts-1.3.8.tgz#0bf0be125b67014adcb0b0921e62db7bffe16b2e"
@@ -1718,11 +1759,37 @@ async-each@^1.0.1:
   resolved "https://registry.npmmirror.com/async-each/-/async-each-1.0.3.tgz#b727dbf87d7651602f06f4d4ac387f47d91b0cbf"
   integrity sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==
 
+async-eventemitter@^0.2.2:
+  version "0.2.4"
+  resolved "https://registry.npmmirror.com/async-eventemitter/-/async-eventemitter-0.2.4.tgz#f5e7c8ca7d3e46aab9ec40a292baf686a0bafaca"
+  integrity sha512-pd20BwL7Yt1zwDFy+8MX8F1+WCT8aQeKj0kQnTrH9WaeRETlRamVhD0JtRPmrV4GfOJ2F9CvdQkZeZhnh2TuHw==
+  dependencies:
+    async "^2.4.0"
+
 async-limiter@~1.0.0:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
   integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
 
+async-mutex@^0.2.6:
+  version "0.2.6"
+  resolved "https://registry.npmmirror.com/async-mutex/-/async-mutex-0.2.6.tgz#0d7a3deb978bc2b984d5908a2038e1ae2e54ff40"
+  integrity sha512-Hs4R+4SPgamu6rSGW8C7cV9gaWUKEHykfzCCvIRuaVv636Ju10ZdeUbvb4TBEW0INuq2DHZqXbK4Nd3yG4RaRw==
+  dependencies:
+    tslib "^2.0.0"
+
+async@^1.4.2:
+  version "1.5.2"
+  resolved "https://registry.npmmirror.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
+  integrity sha512-nSVgobk4rv61R9PUSDtYt7mPVB2olxNR5RWJcAsH676/ef11bUZwvu7+RGYrYauVdDPcO519v68wRhXQtxsV9w==
+
+async@^2.0.1, async@^2.1.2, async@^2.4.0, async@^2.5.0:
+  version "2.6.4"
+  resolved "https://registry.npmmirror.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
+  dependencies:
+    lodash "^4.17.14"
+
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.npmmirror.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -1774,6 +1841,15 @@ babel-plugin-polyfill-corejs2@^0.3.1:
     "@babel/helper-define-polyfill-provider" "^0.3.1"
     semver "^6.1.1"
 
+babel-plugin-polyfill-corejs2@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.npmmirror.com/babel-plugin-polyfill-corejs2/-/babel-plugin-polyfill-corejs2-0.3.2.tgz#e4c31d4c89b56f3cf85b92558954c66b54bd972d"
+  integrity sha512-LPnodUl3lS0/4wN3Rb+m+UK8s7lj2jcLRrjho4gLw+OJs+I4bvGXshINesY5xx/apM+biTnQ9reDI8yj+0M5+Q==
+  dependencies:
+    "@babel/compat-data" "^7.17.7"
+    "@babel/helper-define-polyfill-provider" "^0.3.2"
+    semver "^6.1.1"
+
 babel-plugin-polyfill-corejs3@^0.5.2:
   version "0.5.2"
   resolved "https://registry.npmmirror.com/babel-plugin-polyfill-corejs3/-/babel-plugin-polyfill-corejs3-0.5.2.tgz#aabe4b2fa04a6e038b688c5e55d44e78cd3a5f72"
@@ -1782,6 +1858,14 @@ babel-plugin-polyfill-corejs3@^0.5.2:
     "@babel/helper-define-polyfill-provider" "^0.3.1"
     core-js-compat "^3.21.0"
 
+babel-plugin-polyfill-corejs3@^0.5.3:
+  version "0.5.3"
+  resolved "https://registry.npmmirror.com/babel-plugin-polyfill-corejs3/-/babel-plugin-polyfill-corejs3-0.5.3.tgz#d7e09c9a899079d71a8b670c6181af56ec19c5c7"
+  integrity sha512-zKsXDh0XjnrUEW0mxIHLfjBfnXSMr5Q/goMe/fxpQnLm07mcOZiIZHBNWCMx60HmdvjxfXcalac0tfFg0wqxyw==
+  dependencies:
+    "@babel/helper-define-polyfill-provider" "^0.3.2"
+    core-js-compat "^3.21.0"
+
 babel-plugin-polyfill-regenerator@^0.3.1:
   version "0.3.1"
   resolved "https://registry.npmmirror.com/babel-plugin-polyfill-regenerator/-/babel-plugin-polyfill-regenerator-0.3.1.tgz#2c0678ea47c75c8cc2fbb1852278d8fb68233990"
@@ -1789,6 +1873,20 @@ babel-plugin-polyfill-regenerator@^0.3.1:
   dependencies:
     "@babel/helper-define-polyfill-provider" "^0.3.1"
 
+babel-plugin-polyfill-regenerator@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.npmmirror.com/babel-plugin-polyfill-regenerator/-/babel-plugin-polyfill-regenerator-0.4.0.tgz#8f51809b6d5883e07e71548d75966ff7635527fe"
+  integrity sha512-RW1cnryiADFeHmfLS+WW/G431p1PsW5qdRdz0SDRi7TKcUgc7Oh/uXkT7MZ/+tGsT1BkczEAmD5XjUyJ5SWDTw==
+  dependencies:
+    "@babel/helper-define-polyfill-provider" "^0.3.2"
+
+backoff@^2.5.0:
+  version "2.5.0"
+  resolved "https://registry.npmmirror.com/backoff/-/backoff-2.5.0.tgz#f616eda9d3e4b66b8ca7fca79f695722c5f8e26f"
+  integrity sha512-wC5ihrnUXmR2douXmXLCe5O3zg3GKIyvRi/hi58a/XyRxVI+3/yM0PYueQOZXPXQ9pxBislYkw+sF9b7C/RuMA==
+  dependencies:
+    precond "0.2"
+
 balanced-match@^1.0.0:
   version "1.0.2"
   resolved "https://registry.npmmirror.com/balanced-match/-/balanced-match-1.0.2.tgz#e83e3a7e3f300b34cb9d87f615fa0cbf357690ee"
@@ -2034,6 +2132,11 @@ bs58check@^2.1.2:
     create-hash "^1.1.0"
     safe-buffer "^5.1.2"
 
+btoa@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.npmmirror.com/btoa/-/btoa-1.2.1.tgz#01a9909f8b2c93f6bf680ba26131eb30f7fa3d73"
+  integrity sha512-SB4/MIGlsiVkMcHmT+pSmIPoNDoHg+7cMzmt3Uxt628MTz2487DKSqK/fuhFBrkuqrYv5UCEnACpF4dTFNKc/g==
+
 buffer-from@^1.0.0:
   version "1.1.2"
   resolved "https://registry.npmmirror.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
@@ -2175,6 +2278,13 @@ chalk@^4.1.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+checkpoint-store@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.npmmirror.com/checkpoint-store/-/checkpoint-store-1.1.0.tgz#04e4cb516b91433893581e6d4601a78e9552ea06"
+  integrity sha512-J/NdY2WvIx654cc6LWSq/IYFFCUf75fFTgwzFnmbqyORH4MwgiQCgswLLKBGzmsyTI5V7i5bp/So6sMbDWhedg==
+  dependencies:
+    functional-red-black-tree "^1.0.1"
+
 chokidar@^2.1.8:
   version "2.1.8"
   resolved "https://registry.npmmirror.com/chokidar/-/chokidar-2.1.8.tgz#804b3a7b6a99358c3c5c61e71d8728f041cff917"
@@ -2274,6 +2384,11 @@ clone-response@^1.0.2:
   dependencies:
     mimic-response "^1.0.0"
 
+clone@^2.0.0, clone@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.npmmirror.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
+  integrity sha512-3Pe/CF1Nn94hyhIYpjtiLhdCoEoz0DqQ+988E9gmeEdQZlojxnOb74wctFyuwWQHzqyf9X7C7MG8juUpqBJT8w==
+
 collection-visit@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmmirror.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
@@ -2583,6 +2698,13 @@ defer-to-connect@^1.0.1:
   resolved "https://registry.npmmirror.com/defer-to-connect/-/defer-to-connect-1.1.3.tgz#331ae050c08dcf789f8c83a7b81f0ed94f4ac591"
   integrity sha512-0ISdNousHvZT2EiFlZeZAHBUvSxmKswVCEf8hW7KWgG4a8MVEu/3Vb6uWYozkjylyCxe0JBIiRB1jV45S70WVQ==
 
+deferred-leveldown@~1.2.1:
+  version "1.2.2"
+  resolved "https://registry.npmmirror.com/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz#3acd2e0b75d1669924bc0a4b642851131173e1eb"
+  integrity sha512-uukrWD2bguRtXilKt6cAWKyoXrTSMo5m7crUdLfWQmu8kIm88w3QZoUL+6nhpfKVmhHANER6Re3sKoNoZ3IKMA==
+  dependencies:
+    abstract-leveldown "~2.6.0"
+
 define-properties@^1.1.3, define-properties@^1.1.4:
   version "1.1.4"
   resolved "https://registry.npmmirror.com/define-properties/-/define-properties-1.1.4.tgz#0b14d7bd7fbeb2f3572c3a7eda80ea5d57fb05b1"
@@ -2737,7 +2859,7 @@ envinfo@^7.7.3:
   resolved "https://registry.npmmirror.com/envinfo/-/envinfo-7.8.1.tgz#06377e3e5f4d379fea7ac592d5ad8927e0c4d475"
   integrity sha512-/o+BXHmB7ocbHEAs6F2EnG0ogybVVUdkRunTT2glZU9XAaGmhqskrvKwqXuDfNjEO0LZKWdejEEpnq8aM0tOaw==
 
-errno@^0.1.3, errno@~0.1.7:
+errno@^0.1.3, errno@~0.1.1, errno@~0.1.7:
   version "0.1.8"
   resolved "https://registry.npmmirror.com/errno/-/errno-0.1.8.tgz#8bb3e9c7d463be4976ff888f76b4809ebc2e811f"
   integrity sha512-dJ6oBr5SQ1VSd9qkk7ByRgb/1SH4JZjCHSW/mr63/QcXO9zLVxvJ6Oy13nio03rxpSnVDDjFor75SjVeZWPW/A==
@@ -2863,6 +2985,18 @@ etag@~1.8.1:
   resolved "https://registry.npmmirror.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
   integrity sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg==
 
+eth-block-tracker@^4.4.2:
+  version "4.4.3"
+  resolved "https://registry.npmmirror.com/eth-block-tracker/-/eth-block-tracker-4.4.3.tgz#766a0a0eb4a52c867a28328e9ae21353812cf626"
+  integrity sha512-A8tG4Z4iNg4mw5tP1Vung9N9IjgMNqpiMoJ/FouSFwNCGHv2X0mmOYwtQOJzki6XN7r7Tyo01S29p7b224I4jw==
+  dependencies:
+    "@babel/plugin-transform-runtime" "^7.5.5"
+    "@babel/runtime" "^7.5.5"
+    eth-query "^2.1.0"
+    json-rpc-random-id "^1.0.1"
+    pify "^3.0.0"
+    safe-event-emitter "^1.0.1"
+
 eth-ens-namehash@2.0.8:
   version "2.0.8"
   resolved "https://registry.npmmirror.com/eth-ens-namehash/-/eth-ens-namehash-2.0.8.tgz#229ac46eca86d52e0c991e7cb2aef83ff0f68bcf"
@@ -2871,6 +3005,45 @@ eth-ens-namehash@2.0.8:
     idna-uts46-hx "^2.3.1"
     js-sha3 "^0.5.7"
 
+eth-json-rpc-filters@^4.2.1:
+  version "4.2.2"
+  resolved "https://registry.npmmirror.com/eth-json-rpc-filters/-/eth-json-rpc-filters-4.2.2.tgz#eb35e1dfe9357ace8a8908e7daee80b2cd60a10d"
+  integrity sha512-DGtqpLU7bBg63wPMWg1sCpkKCf57dJ+hj/k3zF26anXMzkmtSBDExL8IhUu7LUd34f0Zsce3PYNO2vV2GaTzaw==
+  dependencies:
+    "@metamask/safe-event-emitter" "^2.0.0"
+    async-mutex "^0.2.6"
+    eth-json-rpc-middleware "^6.0.0"
+    eth-query "^2.1.2"
+    json-rpc-engine "^6.1.0"
+    pify "^5.0.0"
+
+eth-json-rpc-infura@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.npmmirror.com/eth-json-rpc-infura/-/eth-json-rpc-infura-5.1.0.tgz#e6da7dc47402ce64c54e7018170d89433c4e8fb6"
+  integrity sha512-THzLye3PHUSGn1EXMhg6WTLW9uim7LQZKeKaeYsS9+wOBcamRiCQVGHa6D2/4P0oS0vSaxsBnU/J6qvn0MPdow==
+  dependencies:
+    eth-json-rpc-middleware "^6.0.0"
+    eth-rpc-errors "^3.0.0"
+    json-rpc-engine "^5.3.0"
+    node-fetch "^2.6.0"
+
+eth-json-rpc-middleware@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.npmmirror.com/eth-json-rpc-middleware/-/eth-json-rpc-middleware-6.0.0.tgz#4fe16928b34231a2537856f08a5ebbc3d0c31175"
+  integrity sha512-qqBfLU2Uq1Ou15Wox1s+NX05S9OcAEL4JZ04VZox2NS0U+RtCMjSxzXhLFWekdShUPZ+P8ax3zCO2xcPrp6XJQ==
+  dependencies:
+    btoa "^1.2.1"
+    clone "^2.1.1"
+    eth-query "^2.1.2"
+    eth-rpc-errors "^3.0.0"
+    eth-sig-util "^1.4.2"
+    ethereumjs-util "^5.1.2"
+    json-rpc-engine "^5.3.0"
+    json-stable-stringify "^1.0.1"
+    node-fetch "^2.6.1"
+    pify "^3.0.0"
+    safe-event-emitter "^1.0.1"
+
 eth-lib@0.2.8:
   version "0.2.8"
   resolved "https://registry.npmmirror.com/eth-lib/-/eth-lib-0.2.8.tgz#b194058bef4b220ad12ea497431d6cb6aa0623c8"
@@ -2892,6 +3065,36 @@ eth-lib@^0.1.26:
     ws "^3.0.0"
     xhr-request-promise "^0.1.2"
 
+eth-query@^2.1.0, eth-query@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.npmmirror.com/eth-query/-/eth-query-2.1.2.tgz#d6741d9000106b51510c72db92d6365456a6da5e"
+  integrity sha512-srES0ZcvwkR/wd5OQBRA1bIJMww1skfGS0s8wlwK3/oNP4+wnds60krvu5R1QbpRQjMmpG5OMIWro5s7gvDPsA==
+  dependencies:
+    json-rpc-random-id "^1.0.0"
+    xtend "^4.0.1"
+
+eth-rpc-errors@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmmirror.com/eth-rpc-errors/-/eth-rpc-errors-3.0.0.tgz#d7b22653c70dbf9defd4ef490fd08fe70608ca10"
+  integrity sha512-iPPNHPrLwUlR9xCSYm7HHQjWBasor3+KZfRvwEWxMz3ca0yqnlBeJrnyphkGIXZ4J7AMAaOLmwy4AWhnxOiLxg==
+  dependencies:
+    fast-safe-stringify "^2.0.6"
+
+eth-rpc-errors@^4.0.2:
+  version "4.0.3"
+  resolved "https://registry.npmmirror.com/eth-rpc-errors/-/eth-rpc-errors-4.0.3.tgz#6ddb6190a4bf360afda82790bb7d9d5e724f423a"
+  integrity sha512-Z3ymjopaoft7JDoxZcEb3pwdGh7yiYMhOwm2doUt6ASXlMavpNlK6Cre0+IMl2VSGyEU9rkiperQhp5iRxn5Pg==
+  dependencies:
+    fast-safe-stringify "^2.0.6"
+
+eth-sig-util@^1.4.2:
+  version "1.4.2"
+  resolved "https://registry.npmmirror.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
+  integrity sha512-iNZ576iTOGcfllftB73cPB5AN+XUQAT/T8xzsILsghXC1o8gJUqe3RHlcDqagu+biFpYQ61KQrZZJza8eRSYqw==
+  dependencies:
+    ethereumjs-abi "git+https://github.com/ethereumjs/ethereumjs-abi.git"
+    ethereumjs-util "^5.1.1"
+
 ethereum-bloom-filters@^1.0.6:
   version "1.0.10"
   resolved "https://registry.npmmirror.com/ethereum-bloom-filters/-/ethereum-bloom-filters-1.0.10.tgz#3ca07f4aed698e75bd134584850260246a5fed8a"
@@ -2899,6 +3102,16 @@ ethereum-bloom-filters@^1.0.6:
   dependencies:
     js-sha3 "^0.8.0"
 
+ethereum-common@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.npmmirror.com/ethereum-common/-/ethereum-common-0.2.0.tgz#13bf966131cce1eeade62a1b434249bb4cb120ca"
+  integrity sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA==
+
+ethereum-common@^0.0.18:
+  version "0.0.18"
+  resolved "https://registry.npmmirror.com/ethereum-common/-/ethereum-common-0.0.18.tgz#2fdc3576f232903358976eb39da783213ff9523f"
+  integrity sha512-EoltVQTRNg2Uy4o84qpa2aXymXDJhxm7eos/ACOg0DG4baAbMjhbdAEsx9GeE8sC3XCxnYvrrzZDH8D8MtA2iQ==
+
 ethereum-cryptography@^0.1.3:
   version "0.1.3"
   resolved "https://registry.npmmirror.com/ethereum-cryptography/-/ethereum-cryptography-0.1.3.tgz#8d6143cfc3d74bf79bbd8edecdf29e4ae20dd191"
@@ -2928,6 +3141,78 @@ ethereumjs-abi@^0.6.8:
     bn.js "^4.11.8"
     ethereumjs-util "^6.0.0"
 
+"ethereumjs-abi@git+https://github.com/ethereumjs/ethereumjs-abi.git":
+  version "0.6.8"
+  resolved "git+https://github.com/ethereumjs/ethereumjs-abi.git#ee3994657fa7a427238e6ba92a84d0b529bbcde0"
+  dependencies:
+    bn.js "^4.11.8"
+    ethereumjs-util "^6.0.0"
+
+ethereumjs-account@^2.0.3:
+  version "2.0.5"
+  resolved "https://registry.npmmirror.com/ethereumjs-account/-/ethereumjs-account-2.0.5.tgz#eeafc62de544cb07b0ee44b10f572c9c49e00a84"
+  integrity sha512-bgDojnXGjhMwo6eXQC0bY6UK2liSFUSMwwylOmQvZbSl/D7NXQ3+vrGO46ZeOgjGfxXmgIeVNDIiHw7fNZM4VA==
+  dependencies:
+    ethereumjs-util "^5.0.0"
+    rlp "^2.0.0"
+    safe-buffer "^5.1.1"
+
+ethereumjs-block@^1.2.2:
+  version "1.7.1"
+  resolved "https://registry.npmmirror.com/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz#78b88e6cc56de29a6b4884ee75379b6860333c3f"
+  integrity sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==
+  dependencies:
+    async "^2.0.1"
+    ethereum-common "0.2.0"
+    ethereumjs-tx "^1.2.2"
+    ethereumjs-util "^5.0.0"
+    merkle-patricia-tree "^2.1.2"
+
+ethereumjs-block@~2.2.0:
+  version "2.2.2"
+  resolved "https://registry.npmmirror.com/ethereumjs-block/-/ethereumjs-block-2.2.2.tgz#c7654be7e22df489fda206139ecd63e2e9c04965"
+  integrity sha512-2p49ifhek3h2zeg/+da6XpdFR3GlqY3BIEiqxGF8j9aSRIgkb7M1Ky+yULBKJOu8PAZxfhsYA+HxUk2aCQp3vg==
+  dependencies:
+    async "^2.0.1"
+    ethereumjs-common "^1.5.0"
+    ethereumjs-tx "^2.1.1"
+    ethereumjs-util "^5.0.0"
+    merkle-patricia-tree "^2.1.2"
+
+ethereumjs-common@^1.1.0, ethereumjs-common@^1.5.0:
+  version "1.5.2"
+  resolved "https://registry.npmmirror.com/ethereumjs-common/-/ethereumjs-common-1.5.2.tgz#2065dbe9214e850f2e955a80e650cb6999066979"
+  integrity sha512-hTfZjwGX52GS2jcVO6E2sx4YuFnf0Fhp5ylo4pEPhEffNln7vS59Hr5sLnp3/QCazFLluuBZ+FZ6J5HTp0EqCA==
+
+ethereumjs-tx@^1.2.2:
+  version "1.3.7"
+  resolved "https://registry.npmmirror.com/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz#88323a2d875b10549b8347e09f4862b546f3d89a"
+  integrity sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==
+  dependencies:
+    ethereum-common "^0.0.18"
+    ethereumjs-util "^5.0.0"
+
+ethereumjs-tx@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.npmmirror.com/ethereumjs-tx/-/ethereumjs-tx-2.1.2.tgz#5dfe7688bf177b45c9a23f86cf9104d47ea35fed"
+  integrity sha512-zZEK1onCeiORb0wyCXUvg94Ve5It/K6GD1K+26KfFKodiBiS6d9lfCXlUKGBBdQ+bv7Day+JK0tj1K+BeNFRAw==
+  dependencies:
+    ethereumjs-common "^1.5.0"
+    ethereumjs-util "^6.0.0"
+
+ethereumjs-util@^5.0.0, ethereumjs-util@^5.1.1, ethereumjs-util@^5.1.2, ethereumjs-util@^5.1.5:
+  version "5.2.1"
+  resolved "https://registry.npmmirror.com/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz#a833f0e5fca7e5b361384dc76301a721f537bf65"
+  integrity sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==
+  dependencies:
+    bn.js "^4.11.0"
+    create-hash "^1.1.2"
+    elliptic "^6.5.2"
+    ethereum-cryptography "^0.1.3"
+    ethjs-util "^0.1.3"
+    rlp "^2.0.0"
+    safe-buffer "^5.1.1"
+
 ethereumjs-util@^6.0.0, ethereumjs-util@^6.2.1:
   version "6.2.1"
   resolved "https://registry.npmmirror.com/ethereumjs-util/-/ethereumjs-util-6.2.1.tgz#fcb4e4dd5ceacb9d2305426ab1a5cd93e3163b69"
@@ -2952,6 +3237,23 @@ ethereumjs-util@^7.0.10, ethereumjs-util@^7.1.0, ethereumjs-util@^7.1.2, ethereu
     ethereum-cryptography "^0.1.3"
     rlp "^2.2.4"
 
+ethereumjs-vm@^2.3.4:
+  version "2.6.0"
+  resolved "https://registry.npmmirror.com/ethereumjs-vm/-/ethereumjs-vm-2.6.0.tgz#76243ed8de031b408793ac33907fb3407fe400c6"
+  integrity sha512-r/XIUik/ynGbxS3y+mvGnbOKnuLo40V5Mj1J25+HEO63aWYREIqvWeRO/hnROlMBE5WoniQmPmhiaN0ctiHaXw==
+  dependencies:
+    async "^2.1.2"
+    async-eventemitter "^0.2.2"
+    ethereumjs-account "^2.0.3"
+    ethereumjs-block "~2.2.0"
+    ethereumjs-common "^1.1.0"
+    ethereumjs-util "^6.0.0"
+    fake-merkle-patricia-tree "^1.0.1"
+    functional-red-black-tree "^1.0.1"
+    merkle-patricia-tree "^2.3.2"
+    rustbn.js "~0.2.0"
+    safe-buffer "^5.1.1"
+
 ethereumjs-wallet@^1.0.2:
   version "1.0.2"
   resolved "https://registry.npmmirror.com/ethereumjs-wallet/-/ethereumjs-wallet-1.0.2.tgz#2c000504b4c71e8f3782dabe1113d192522e99b6"
@@ -2974,7 +3276,7 @@ ethjs-unit@0.1.6:
     bn.js "4.11.6"
     number-to-bn "1.7.0"
 
-ethjs-util@0.1.6, ethjs-util@^0.1.6:
+ethjs-util@0.1.6, ethjs-util@^0.1.3, ethjs-util@^0.1.6:
   version "0.1.6"
   resolved "https://registry.npmmirror.com/ethjs-util/-/ethjs-util-0.1.6.tgz#f308b62f185f9fe6237132fb2a9818866a5cd536"
   integrity sha512-CUnVOQq7gSpDHZVVrQW8ExxUETWrnrvXYvYz55wOU8Uj4VCgw56XC2B/fVqQN+f7gmrnRHSLVnFAwsCuNwji8w==
@@ -2987,6 +3289,11 @@ eventemitter3@4.0.4:
   resolved "https://registry.npmmirror.com/eventemitter3/-/eventemitter3-4.0.4.tgz#b5463ace635a083d018bdc7c917b4c5f10a85384"
   integrity sha512-rlaVLnVxtxvoyLsQQFBx53YmXHDxRIzzTLbdfxqi4yocpSjAxXwkU0cScM5JgSKMqEhrZpnvQ2D9gjylR0AimQ==
 
+eventemitter3@4.0.7:
+  version "4.0.7"
+  resolved "https://registry.npmmirror.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
+  integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
+
 events@^3.0.0:
   version "3.3.0"
   resolved "https://registry.npmmirror.com/events/-/events-3.3.0.tgz#31a95ad0a924e2d2c419a813aeb2c4e878ea7400"
@@ -3101,6 +3408,13 @@ extsprintf@^1.2.0:
   resolved "https://registry.npmmirror.com/extsprintf/-/extsprintf-1.4.1.tgz#8d172c064867f235c0c84a596806d279bf4bcc07"
   integrity sha512-Wrk35e8ydCKDj/ArClo1VrPVmN8zph5V4AtHwIuHhvMXsKf73UT3BOD+azBIW+3wOJ4FhEH7zyaJCFvChjYvMA==
 
+fake-merkle-patricia-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/fake-merkle-patricia-tree/-/fake-merkle-patricia-tree-1.0.1.tgz#4b8c3acfb520afadf9860b1f14cd8ce3402cddd3"
+  integrity sha512-Tgq37lkc9pUIgIKw5uitNUKcgcYL3R6JvXtKQbOf/ZSavXbidsksgp/pAY6p//uhw0I4yoMsvTSovvVIsk/qxA==
+  dependencies:
+    checkpoint-store "^1.1.0"
+
 fast-deep-equal@^3.1.1:
   version "3.1.3"
   resolved "https://registry.npmmirror.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
@@ -3111,6 +3425,11 @@ fast-json-stable-stringify@^2.0.0:
   resolved "https://registry.npmmirror.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
   integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
+fast-safe-stringify@^2.0.6:
+  version "2.1.1"
+  resolved "https://registry.npmmirror.com/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz#c406a83b6e70d9e35ce3b30a81141df30aeba884"
+  integrity sha512-W+KJc2dmILlPplD/H4K9l9LcAHAfPtP6BY84uVLXQ6Evcz9Lcg33Y2z1IVblT6xdY54PXYVHEv+0Wpq8Io6zkA==
+
 fastest-levenshtein@^1.0.12:
   version "1.0.12"
   resolved "https://registry.npmmirror.com/fastest-levenshtein/-/fastest-levenshtein-1.0.12.tgz#9990f7d3a88cc5a9ffd1f1745745251700d497e2"
@@ -3328,6 +3647,11 @@ function.prototype.name@^1.1.5:
     es-abstract "^1.19.0"
     functions-have-names "^1.2.2"
 
+functional-red-black-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
+  integrity sha512-dsKNQNdj6xA3T+QlADDA7mOSlX0qiMINjn0cgr+eGHGsbSHzTabcIogz2+p/iqP1Xs6EP/sS2SbqH+brGTbq0g==
+
 functions-have-names@^1.2.2:
   version "1.2.3"
   resolved "https://registry.npmmirror.com/functions-have-names/-/functions-have-names-1.2.3.tgz#0404fe4ee2ba2f607f0e0ec3c80bae994133b834"
@@ -3650,6 +3974,11 @@ iferr@^0.1.5:
   resolved "https://registry.npmmirror.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
   integrity sha512-DUNFN5j7Tln0D+TxzloUjKB+CtVu6myn0JEFak6dG18mNt9YkQ6lzGCdafwofISZ1lLF3xRHJ98VKy9ynkcFaA==
 
+immediate@^3.2.3:
+  version "3.3.0"
+  resolved "https://registry.npmmirror.com/immediate/-/immediate-3.3.0.tgz#1aef225517836bcdf7f2a2de2600c79ff0269266"
+  integrity sha512-HR7EVodfFUdQCTIeySw+WDRFJlPcLOJbXfwwZ7Oom6tjsvZ3bOkCDJHehQC3nxJrv7+f9XecwazynjU8e4Vw3Q==
+
 import-local@^3.0.2:
   version "3.1.0"
   resolved "https://registry.npmmirror.com/import-local/-/import-local-3.1.0.tgz#b4479df8a5fd44f6cdce24070675676063c95cb4"
@@ -3846,6 +4175,11 @@ is-extglob@^2.1.0, is-extglob@^2.1.1:
   resolved "https://registry.npmmirror.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
   integrity sha512-SbKbANkN603Vi4jEZv49LeVJMn4yGwsbzZworEoyEiutsN3nJYdbO36zfhGJ6QEDpOZIFkDtnq5JRxmvl3jsoQ==
 
+is-fn@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.npmmirror.com/is-fn/-/is-fn-1.0.0.tgz#9543d5de7bcf5b08a22ec8a20bae6e286d510d8c"
+  integrity sha512-XoFPJQmsAShb3jEQRfzf2rqXavq7fIqF/jOekp308JlThqrODnMpweVSGilKTCXELfLhltGP2AGgbQGVP8F1dg==
+
 is-function@^1.0.1:
   version "1.0.2"
   resolved "https://registry.npmmirror.com/is-function/-/is-function-1.0.2.tgz#4f097f30abf6efadac9833b17ca5dc03f8144e08"
@@ -4005,6 +4339,11 @@ is-wsl@^2.1.1:
   dependencies:
     is-docker "^2.0.0"
 
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.npmmirror.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+  integrity sha512-D2S+3GLxWH+uhrNEcoh/fnmYeP8E8/zHl644d/jdA0g2uyXvy3sb0qxotE+ne0LtccHknQzWwZEzhak7oJ0COQ==
+
 isarray@1.0.0, isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.npmmirror.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -4080,6 +4419,27 @@ json-parse-better-errors@^1.0.2:
   resolved "https://registry.npmmirror.com/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz#bb867cfb3450e69107c131d1c514bab3dc8bcaa9"
   integrity sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==
 
+json-rpc-engine@^5.3.0:
+  version "5.4.0"
+  resolved "https://registry.npmmirror.com/json-rpc-engine/-/json-rpc-engine-5.4.0.tgz#75758609d849e1dba1e09021ae473f3ab63161e5"
+  integrity sha512-rAffKbPoNDjuRnXkecTjnsE3xLLrb00rEkdgalINhaYVYIxDwWtvYBr9UFbhTvPB1B2qUOLoFd/cV6f4Q7mh7g==
+  dependencies:
+    eth-rpc-errors "^3.0.0"
+    safe-event-emitter "^1.0.1"
+
+json-rpc-engine@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.npmmirror.com/json-rpc-engine/-/json-rpc-engine-6.1.0.tgz#bf5ff7d029e1c1bf20cb6c0e9f348dcd8be5a393"
+  integrity sha512-NEdLrtrq1jUZyfjkr9OCz9EzCNhnRyWtt1PAnvnhwy6e8XETS0Dtc+ZNCO2gvuAoKsIn2+vCSowXTYE4CkgnAQ==
+  dependencies:
+    "@metamask/safe-event-emitter" "^2.0.0"
+    eth-rpc-errors "^4.0.2"
+
+json-rpc-random-id@^1.0.0, json-rpc-random-id@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
+  integrity sha512-RJ9YYNCkhVDBuP4zN5BBtYAzEl03yq/jIIsyif0JY9qyJuQQZNeDK7anAPKKlyEtLSj2s8h6hNh2F8zO5q7ScA==
+
 json-schema-traverse@^0.4.1:
   version "0.4.1"
   resolved "https://registry.npmmirror.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
@@ -4090,6 +4450,13 @@ json-schema@0.4.0:
   resolved "https://registry.npmmirror.com/json-schema/-/json-schema-0.4.0.tgz#f7de4cf6efab838ebaeb3236474cbba5a1930ab5"
   integrity sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA==
 
+json-stable-stringify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz#9a759d39c5f2ff503fd5300646ed445f88c4f9af"
+  integrity sha512-i/J297TW6xyj7sDFa7AmBPkQvLIxWr2kKPWI26tXydnZrzVAocNqn5DMNT1Mzk0vit1V5UkRM7C1KdVNp7Lmcg==
+  dependencies:
+    jsonify "~0.0.0"
+
 json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.npmmirror.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
@@ -4114,6 +4481,11 @@ jsonfile@^4.0.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+jsonify@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.npmmirror.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
+  integrity sha512-trvBk1ki43VZptdBI5rIlG4YOzyeH/WefQt5rj1grasPn4iiZWKet8nkgc4GlsAylaztn0qZfUYOiTsASJFdNA==
+
 jsprim@^1.2.2:
   version "1.4.2"
   resolved "https://registry.npmmirror.com/jsprim/-/jsprim-1.4.2.tgz#712c65533a15c878ba59e9ed5f0e26d5b77c5feb"
@@ -4176,6 +4548,56 @@ klaw-sync@^6.0.0:
   dependencies:
     graceful-fs "^4.1.11"
 
+level-codec@~7.0.0:
+  version "7.0.1"
+  resolved "https://registry.npmmirror.com/level-codec/-/level-codec-7.0.1.tgz#341f22f907ce0f16763f24bddd681e395a0fb8a7"
+  integrity sha512-Ua/R9B9r3RasXdRmOtd+t9TCOEIIlts+TN/7XTT2unhDaL6sJn83S3rUyljbr6lVtw49N3/yA0HHjpV6Kzb2aQ==
+
+level-errors@^1.0.3:
+  version "1.1.2"
+  resolved "https://registry.npmmirror.com/level-errors/-/level-errors-1.1.2.tgz#4399c2f3d3ab87d0625f7e3676e2d807deff404d"
+  integrity sha512-Sw/IJwWbPKF5Ai4Wz60B52yj0zYeqzObLh8k1Tk88jVmD51cJSKWSYpRyhVIvFzZdvsPqlH5wfhp/yxdsaQH4w==
+  dependencies:
+    errno "~0.1.1"
+
+level-errors@~1.0.3:
+  version "1.0.5"
+  resolved "https://registry.npmmirror.com/level-errors/-/level-errors-1.0.5.tgz#83dbfb12f0b8a2516bdc9a31c4876038e227b859"
+  integrity sha512-/cLUpQduF6bNrWuAC4pwtUKA5t669pCsCi2XbmojG2tFeOr9j6ShtdDCtFFQO1DRt+EVZhx9gPzP9G2bUaG4ig==
+  dependencies:
+    errno "~0.1.1"
+
+level-iterator-stream@~1.3.0:
+  version "1.3.1"
+  resolved "https://registry.npmmirror.com/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz#e43b78b1a8143e6fa97a4f485eb8ea530352f2ed"
+  integrity sha512-1qua0RHNtr4nrZBgYlpV0qHHeHpcRRWTxEZJ8xsemoHAXNL5tbooh4tPEEqIqsbWCAJBmUmkwYK/sW5OrFjWWw==
+  dependencies:
+    inherits "^2.0.1"
+    level-errors "^1.0.3"
+    readable-stream "^1.0.33"
+    xtend "^4.0.0"
+
+level-ws@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.npmmirror.com/level-ws/-/level-ws-0.0.0.tgz#372e512177924a00424b0b43aef2bb42496d228b"
+  integrity sha512-XUTaO/+Db51Uiyp/t7fCMGVFOTdtLS/NIACxE/GHsij15mKzxksZifKVjlXDF41JMUP/oM1Oc4YNGdKnc3dVLw==
+  dependencies:
+    readable-stream "~1.0.15"
+    xtend "~2.1.1"
+
+levelup@^1.2.1:
+  version "1.3.9"
+  resolved "https://registry.npmmirror.com/levelup/-/levelup-1.3.9.tgz#2dbcae845b2bb2b6bea84df334c475533bbd82ab"
+  integrity sha512-VVGHfKIlmw8w1XqpGOAGwq6sZm2WwWLmlDcULkKWQXEA5EopA8OBNJ2Ck2v6bdk8HeEZSbCSEgzXadyQFm76sQ==
+  dependencies:
+    deferred-leveldown "~1.2.1"
+    level-codec "~7.0.0"
+    level-errors "~1.0.3"
+    level-iterator-stream "~1.3.0"
+    prr "~1.0.1"
+    semver "~5.4.1"
+    xtend "~4.0.0"
+
 loader-runner@^2.4.0:
   version "2.4.0"
   resolved "https://registry.npmmirror.com/loader-runner/-/loader-runner-2.4.0.tgz#ed47066bfe534d7e84c4c7b9998c2a75607d9357"
@@ -4219,6 +4641,11 @@ lodash.debounce@^4.0.8:
   resolved "https://registry.npmmirror.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
   integrity sha512-FT1yDzDYEoYWhnSGnpE/4Kj1fLZkDFyqRb7fNt6FdYOSxlUWAtp42Eh6Wb0rGIv/m9Bgo7x4GhQbm5Ys4SG5ow==
 
+lodash@^4.17.14:
+  version "4.17.21"
+  resolved "https://registry.npmmirror.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 lowercase-keys@^1.0.0, lowercase-keys@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"
@@ -4243,6 +4670,11 @@ lru-cache@^6.0.0:
   dependencies:
     yallist "^4.0.0"
 
+ltgt@~2.2.0:
+  version "2.2.1"
+  resolved "https://registry.npmmirror.com/ltgt/-/ltgt-2.2.1.tgz#f35ca91c493f7b73da0e07495304f17b31f87ee5"
+  integrity sha512-AI2r85+4MquTw9ZYqabu4nMwy9Oftlfa/e/52t9IjtfG+mGBbTNdAoZ3RQKLHR6r0wQnwZnPIEh/Ya6XTWAKNA==
+
 make-dir@^2.0.0, make-dir@^2.1.0:
   version "2.1.0"
   resolved "https://registry.npmmirror.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
@@ -4284,6 +4716,18 @@ media-typer@0.3.0:
   resolved "https://registry.npmmirror.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
   integrity sha512-dq+qelQ9akHpcOl/gUVRTxVIOkAJ1wR3QAvb4RsVjS8oVoFjDGTc679wJYmUmknUF5HwMLOgb5O+a3KxfWapPQ==
 
+memdown@^1.0.0:
+  version "1.4.1"
+  resolved "https://registry.npmmirror.com/memdown/-/memdown-1.4.1.tgz#b4e4e192174664ffbae41361aa500f3119efe215"
+  integrity sha512-iVrGHZB8i4OQfM155xx8akvG9FIj+ht14DX5CQkCTG4EHzZ3d3sgckIf/Lm9ivZalEsFuEVnWv2B2WZvbrro2w==
+  dependencies:
+    abstract-leveldown "~2.7.1"
+    functional-red-black-tree "^1.0.1"
+    immediate "^3.2.3"
+    inherits "~2.0.1"
+    ltgt "~2.2.0"
+    safe-buffer "~5.1.1"
+
 memory-fs@^0.4.1:
   version "0.4.1"
   resolved "https://registry.npmmirror.com/memory-fs/-/memory-fs-0.4.1.tgz#3a9a20b8462523e447cfbc7e8bb80ed667bfc552"
@@ -4305,6 +4749,20 @@ merge-descriptors@1.0.1:
   resolved "https://registry.npmmirror.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
   integrity sha512-cCi6g3/Zr1iqQi6ySbseM1Xvooa98N0w31jzUYrXPX2xqObmFGHJ0tQ5u74H3mVh7wLouTseZyYIq39g8cNp1w==
 
+merkle-patricia-tree@^2.1.2, merkle-patricia-tree@^2.3.2:
+  version "2.3.2"
+  resolved "https://registry.npmmirror.com/merkle-patricia-tree/-/merkle-patricia-tree-2.3.2.tgz#982ca1b5a0fde00eed2f6aeed1f9152860b8208a"
+  integrity sha512-81PW5m8oz/pz3GvsAwbauj7Y00rqm81Tzad77tHBwU7pIAtN+TJnMSOJhxBKflSVYhptMMb9RskhqHqrSm1V+g==
+  dependencies:
+    async "^1.4.2"
+    ethereumjs-util "^5.0.0"
+    level-ws "0.0.0"
+    levelup "^1.2.1"
+    memdown "^1.0.0"
+    readable-stream "^2.0.0"
+    rlp "^2.0.0"
+    semaphore ">=1.0.1"
+
 methods@~1.1.2:
   version "1.1.2"
   resolved "https://registry.npmmirror.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
@@ -4578,6 +5036,13 @@ node-addon-api@^2.0.0:
   resolved "https://registry.npmmirror.com/node-addon-api/-/node-addon-api-2.0.2.tgz#432cfa82962ce494b132e9d72a15b29f71ff5d32"
   integrity sha512-Ntyt4AIXyaLIuMHF6IOoTakB3K+RWxwtsHNRxllEoA6vPwP9o4866g6YWDLUdnucilZhmkxiHwHr11gAENw+QA==
 
+node-fetch@^2.6.0, node-fetch@^2.6.1:
+  version "2.6.7"
+  resolved "https://registry.npmmirror.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
+  integrity sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==
+  dependencies:
+    whatwg-url "^5.0.0"
+
 node-gyp-build@^4.2.0, node-gyp-build@^4.3.0:
   version "4.5.0"
   resolved "https://registry.npmmirror.com/node-gyp-build/-/node-gyp-build-4.5.0.tgz#7a64eefa0b21112f89f58379da128ac177f20e40"
@@ -4679,6 +5144,11 @@ object-keys@^1.1.1:
   resolved "https://registry.npmmirror.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
   integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
 
+object-keys@~0.4.0:
+  version "0.4.0"
+  resolved "https://registry.npmmirror.com/object-keys/-/object-keys-0.4.0.tgz#28a6aae7428dd2c3a92f3d95f21335dd204e0336"
+  integrity sha512-ncrLw+X55z7bkl5PnUvHwFK9FcGuFYo9gtjws2XtSzL+aZ8tm830P60WJ0dSmFVaSalWieW5MD7kEdnXda9yJw==
+
 object-visit@^1.0.0:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
@@ -4920,11 +5390,21 @@ picomatch@^2.0.4, picomatch@^2.2.1, picomatch@^2.3.1:
   resolved "https://registry.npmmirror.com/picomatch/-/picomatch-2.3.1.tgz#3ba3833733646d9d3e4995946c1365a67fb07a42"
   integrity sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==
 
+pify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmmirror.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
+  integrity sha512-C3FsVNH1udSEX48gGX1xfvwTWfsYWj5U+8/uK15BGzIGrKoUpghX8hWZwa/OFnakBiiVNmBvemTJR5mcy7iPcg==
+
 pify@^4.0.1:
   version "4.0.1"
   resolved "https://registry.npmmirror.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
   integrity sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==
 
+pify@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.npmmirror.com/pify/-/pify-5.0.0.tgz#1f5eca3f5e87ebec28cc6d54a0e4aaf00acc127f"
+  integrity sha512-eW/gHNMlxdSP6dmG6uJip6FXN0EQBwm2clYYd8Wul42Cwu/DK8HEftzsapcNdYe2MfLiIwZqsDk2RDEsTE79hA==
+
 pkg-dir@^3.0.0:
   version "3.0.0"
   resolved "https://registry.npmmirror.com/pkg-dir/-/pkg-dir-3.0.0.tgz#2749020f239ed990881b1f71210d51eb6523bea3"
@@ -4949,6 +5429,11 @@ postinstall-postinstall@^2.1.0:
   resolved "https://registry.npmmirror.com/postinstall-postinstall/-/postinstall-postinstall-2.1.0.tgz#4f7f77441ef539d1512c40bd04c71b06a4704ca3"
   integrity sha512-7hQX6ZlZXIoRiWNrbMQaLzUUfH+sSx39u8EJ9HYuDc1kLo9IXKWjM5RSquZN1ad5GnH8CGFM78fsAAQi3OKEEQ==
 
+precond@0.2:
+  version "0.2.3"
+  resolved "https://registry.npmmirror.com/precond/-/precond-0.2.3.tgz#aa9591bcaa24923f1e0f4849d240f47efc1075ac"
+  integrity sha512-QCYG84SgGyGzqJ/vlMsxeXd/pgL/I94ixdNFyh1PusWmTCyVfPJjZ1K1jvHtsbfnXQs2TSkEP2fR7QiMZAnKFQ==
+
 prepend-http@^1.0.1:
   version "1.0.4"
   resolved "https://registry.npmmirror.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
@@ -4974,6 +5459,14 @@ promise-inflight@^1.0.1:
   resolved "https://registry.npmmirror.com/promise-inflight/-/promise-inflight-1.0.1.tgz#98472870bf228132fcbdd868129bad12c3c029e3"
   integrity sha512-6zWPyEOFaQBJYcGMHBKTKJ3u6TBsnMFOIZSa6ce1e/ZrrsOlnHRHbabMjLiBYKp+n44X9eUI6VUPaukCXHuG4g==
 
+promise-to-callback@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.npmmirror.com/promise-to-callback/-/promise-to-callback-1.0.0.tgz#5d2a749010bfb67d963598fcd3960746a68feef7"
+  integrity sha512-uhMIZmKM5ZteDMfLgJnoSq9GCwsNKrYau73Awf1jIy6/eUcuuZ3P+CD9zUv0kJsIUbU+x6uLNIhXhLHDs1pNPA==
+  dependencies:
+    is-fn "^1.0.0"
+    set-immediate-shim "^1.0.1"
+
 proxy-addr@~2.0.7:
   version "2.0.7"
   resolved "https://registry.npmmirror.com/proxy-addr/-/proxy-addr-2.0.7.tgz#f19fe69ceab311eeb94b42e70e8c2070f9ba1025"
@@ -5119,7 +5612,7 @@ raw-body@2.5.1:
     iconv-lite "0.4.24"
     unpipe "1.0.0"
 
-"readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.3.3, readable-stream@^2.3.6, readable-stream@~2.3.6:
+"readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.3, readable-stream@^2.3.6, readable-stream@~2.3.6:
   version "2.3.7"
   resolved "https://registry.npmmirror.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
   integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
@@ -5132,6 +5625,16 @@ raw-body@2.5.1:
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
+readable-stream@^1.0.33:
+  version "1.1.14"
+  resolved "https://registry.npmmirror.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
+  integrity sha512-+MeVjFf4L44XUkhM1eYbD8fyEsxcV81pqMSR5gblfcLCHfZvbrqy4/qYHE+/R5HoBUT11WV5O08Cr1n3YXkWVQ==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 readable-stream@^3.5.0, readable-stream@^3.6.0:
   version "3.6.0"
   resolved "https://registry.npmmirror.com/readable-stream/-/readable-stream-3.6.0.tgz#337bbda3adc0706bd3e024426a286d4b4b2c9198"
@@ -5141,6 +5644,16 @@ readable-stream@^3.5.0, readable-stream@^3.6.0:
     string_decoder "^1.1.1"
     util-deprecate "^1.0.1"
 
+readable-stream@~1.0.15:
+  version "1.0.34"
+  resolved "https://registry.npmmirror.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
+  integrity sha512-ok1qVCJuRkNmvebYikljxJA/UEsKwLl2nI1OmaqAu4/UE+h0wKCHok4XkL/gvi39OacXvw59RJUOFUkDib2rHg==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 readdirp@^2.2.1:
   version "2.2.1"
   resolved "https://registry.npmmirror.com/readdirp/-/readdirp-2.2.1.tgz#0e87622a3325aa33e892285caf8b4e846529a525"
@@ -5244,7 +5757,7 @@ repeat-string@^1.6.1:
   resolved "https://registry.npmmirror.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
   integrity sha512-PV0dzCYDNfRi1jCDbJzpW7jNNDRuCOG/jI5ctQcGKt/clZD+YcPS3yIlWuTJMmESC8aevCFmWJy5wjAFgNqN6w==
 
-request@^2.79.0:
+request@^2.79.0, request@^2.85.0:
   version "2.88.2"
   resolved "https://registry.npmmirror.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
   integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
@@ -5323,7 +5836,7 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
-rlp@^2.2.3, rlp@^2.2.4:
+rlp@^2.0.0, rlp@^2.2.3, rlp@^2.2.4:
   version "2.2.7"
   resolved "https://registry.npmmirror.com/rlp/-/rlp-2.2.7.tgz#33f31c4afac81124ac4b283e2bd4d9720b30beaf"
   integrity sha512-d5gdPmgQ0Z+AklL2NVXr/IoSjNZFfTVvQWzL/AM2AOcSzYP2xjlb0AC8YyCLc41MSNf6P6QVtjgPdmVtzb+4lQ==
@@ -5337,6 +5850,11 @@ run-queue@^1.0.0, run-queue@^1.0.3:
   dependencies:
     aproba "^1.1.1"
 
+rustbn.js@~0.2.0:
+  version "0.2.0"
+  resolved "https://registry.npmmirror.com/rustbn.js/-/rustbn.js-0.2.0.tgz#8082cb886e707155fd1cb6f23bd591ab8d55d0ca"
+  integrity sha512-4VlvkRUuCJvr2J6Y0ImW7NvTCriMi7ErOAqWk1y69vAdoNIzCF3yPmgeNzx+RQTLEDFq5sHfscn1MwHxP9hNfA==
+
 safe-buffer@5.2.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@^5.2.1, safe-buffer@~5.2.0:
   version "5.2.1"
   resolved "https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
@@ -5347,6 +5865,13 @@ safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   resolved "https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
 
+safe-event-emitter@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/safe-event-emitter/-/safe-event-emitter-1.0.1.tgz#5b692ef22329ed8f69fdce607e50ca734f6f20af"
+  integrity sha512-e1wFe99A91XYYxoQbcq2ZJUWurxEyP8vfz7A7vuUe1s95q8r5ebraVaA1BukYJcpM6V16ugWoD9vngi8Ccu5fg==
+  dependencies:
+    events "^3.0.0"
+
 safe-regex@^1.1.0:
   version "1.1.0"
   resolved "https://registry.npmmirror.com/safe-regex/-/safe-regex-1.1.0.tgz#40a3669f3b077d1e943d44629e157dd48023bf2e"
@@ -5391,6 +5916,11 @@ secp256k1@^4.0.1:
     node-addon-api "^2.0.0"
     node-gyp-build "^4.2.0"
 
+semaphore@>=1.0.1, semaphore@^1.0.3:
+  version "1.1.0"
+  resolved "https://registry.npmmirror.com/semaphore/-/semaphore-1.1.0.tgz#aaad8b86b20fe8e9b32b16dc2ee682a8cd26a8aa"
+  integrity sha512-O4OZEaNtkMd/K0i6js9SL+gqy0ZCBMgUvlSqHKi4IBdjhe7wB8pwztUk1BbZ1fmrvpwFrPbHzqd2w5pTcJH6LA==
+
 semver@7.0.0:
   version "7.0.0"
   resolved "https://registry.npmmirror.com/semver/-/semver-7.0.0.tgz#5f3ca35761e47e05b206c6daff2cf814f0316b8e"
@@ -5413,6 +5943,11 @@ semver@^7.3.4:
   dependencies:
     lru-cache "^6.0.0"
 
+semver@~5.4.1:
+  version "5.4.1"
+  resolved "https://registry.npmmirror.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
+  integrity sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg==
+
 send@0.18.0:
   version "0.18.0"
   resolved "https://registry.npmmirror.com/send/-/send-0.18.0.tgz#670167cc654b05f5aa4a767f9113bb371bc706be"
@@ -5460,6 +5995,11 @@ servify@^0.1.12:
     request "^2.79.0"
     xhr "^2.3.3"
 
+set-immediate-shim@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmmirror.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
+  integrity sha512-Li5AOqrZWCVA2n5kryzEmqai6bKSIvpz5oUJHPVj6+dsbD3X1ixtsY5tEnsaNpH3pFAHmG8eIHUrtEtohrg+UQ==
+
 set-value@^2.0.0, set-value@^2.0.1:
   version "2.0.1"
   resolved "https://registry.npmmirror.com/set-value/-/set-value-2.0.1.tgz#a18d40530e6f07de4228c7defe4227af8cad005b"
@@ -5748,6 +6288,11 @@ string_decoder@^1.0.0, string_decoder@^1.1.1:
   dependencies:
     safe-buffer "~5.2.0"
 
+string_decoder@~0.10.x:
+  version "0.10.31"
+  resolved "https://registry.npmmirror.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
+  integrity sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ==
+
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.npmmirror.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -5927,6 +6472,11 @@ tough-cookie@~2.5.0:
     psl "^1.1.28"
     punycode "^2.1.1"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.npmmirror.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+  integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
+
 ts-loader@~8.2.0:
   version "8.2.0"
   resolved "https://registry.npmmirror.com/ts-loader/-/ts-loader-8.2.0.tgz#6a3aeaa378aecda543e2ed2c332d3123841d52e0"
@@ -5938,6 +6488,11 @@ ts-loader@~8.2.0:
     micromatch "^4.0.0"
     semver "^7.3.4"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.npmmirror.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+  integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.npmmirror.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"
@@ -6414,6 +6969,33 @@ web3-net@1.7.4:
     web3-core-method "1.7.4"
     web3-utils "1.7.4"
 
+web3-provider-engine@^16.0.4:
+  version "16.0.4"
+  resolved "https://registry.npmmirror.com/web3-provider-engine/-/web3-provider-engine-16.0.4.tgz#a6565d85f3cfdc2da68f141af8728f90ad198f3f"
+  integrity sha512-f5WxJ9+LTF+4aJo4tCOXtQ6SDytBtLkhvV+qh/9gImHAuG9sMr6utY0mn/pro1Rx7O3hbztBxvQKjGMdOo8muw==
+  dependencies:
+    "@ethereumjs/tx" "^3.3.0"
+    async "^2.5.0"
+    backoff "^2.5.0"
+    clone "^2.0.0"
+    eth-block-tracker "^4.4.2"
+    eth-json-rpc-filters "^4.2.1"
+    eth-json-rpc-infura "^5.1.0"
+    eth-json-rpc-middleware "^6.0.0"
+    eth-rpc-errors "^3.0.0"
+    eth-sig-util "^1.4.2"
+    ethereumjs-block "^1.2.2"
+    ethereumjs-util "^5.1.5"
+    ethereumjs-vm "^2.3.4"
+    json-stable-stringify "^1.0.1"
+    promise-to-callback "^1.0.0"
+    readable-stream "^2.2.9"
+    request "^2.85.0"
+    semaphore "^1.0.3"
+    ws "^5.1.1"
+    xhr "^2.2.0"
+    xtend "^4.0.1"
+
 web3-providers-http@1.7.4:
   version "1.7.4"
   resolved "https://registry.npmmirror.com/web3-providers-http/-/web3-providers-http-1.7.4.tgz#8209cdcb115db5ccae1f550d1c4e3005e7538d02"
@@ -6475,6 +7057,11 @@ web3@^1.7.4:
     web3-shh "1.7.4"
     web3-utils "1.7.4"
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.npmmirror.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+  integrity sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==
+
 webpack-cli@^4.9.1:
   version "4.10.0"
   resolved "https://registry.npmmirror.com/webpack-cli/-/webpack-cli-4.10.0.tgz#37c1d69c8d85214c5a65e589378f53aec64dab31"
@@ -6555,6 +7142,14 @@ whatwg-fetch@^3.6.2:
   resolved "https://registry.npmmirror.com/whatwg-fetch/-/whatwg-fetch-3.6.2.tgz#dced24f37f2624ed0281725d51d0e2e3fe677f8c"
   integrity sha512-bJlen0FcuU/0EMLrdbJ7zOnW6ITZLrZMIarMUVmdKtsGvZna8vxKYaexICWPfZ8qwf9fzNq+UEIZrnSaApt6RA==
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.npmmirror.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  integrity sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 which-boxed-primitive@^1.0.2:
   version "1.0.2"
   resolved "https://registry.npmmirror.com/which-boxed-primitive/-/which-boxed-primitive-1.0.2.tgz#13757bc89b209b049fe5d86430e21cf40a89a8e6"
@@ -6623,6 +7218,13 @@ ws@^3.0.0:
     safe-buffer "~5.1.0"
     ultron "~1.1.0"
 
+ws@^5.1.1:
+  version "5.2.3"
+  resolved "https://registry.npmmirror.com/ws/-/ws-5.2.3.tgz#05541053414921bc29c63bee14b8b0dd50b07b3d"
+  integrity sha512-jZArVERrMsKUatIdnLzqvcfydI85dvd/Fp1u/VOpfdDWQ4c9qWXe+VIeAbQ5FrDwciAkr+lzofXLz3Kuf26AOA==
+  dependencies:
+    async-limiter "~1.0.0"
+
 xhr-request-promise@^0.1.2:
   version "0.1.3"
   resolved "https://registry.npmmirror.com/xhr-request-promise/-/xhr-request-promise-0.1.3.tgz#2d5f4b16d8c6c893be97f1a62b0ed4cf3ca5f96c"
@@ -6650,7 +7252,7 @@ xhr2-cookies@1.1.0:
   dependencies:
     cookiejar "^2.1.1"
 
-xhr@^2.0.4, xhr@^2.3.3:
+xhr@^2.0.4, xhr@^2.2.0, xhr@^2.3.3:
   version "2.6.0"
   resolved "https://registry.npmmirror.com/xhr/-/xhr-2.6.0.tgz#b69d4395e792b4173d6b7df077f0fc5e4e2b249d"
   integrity sha512-/eCGLb5rxjx5e3mF1A7s+pLlR6CGyqWN91fv1JgER5mVWg1MZmlhBvy9kjcsOdRk8RrIujotWyJamfyrp+WIcA==
@@ -6660,11 +7262,18 @@ xhr@^2.0.4, xhr@^2.3.3:
     parse-headers "^2.0.0"
     xtend "^4.0.0"
 
-xtend@^4.0.0, xtend@^4.0.2, xtend@~4.0.1:
+xtend@^4.0.0, xtend@^4.0.1, xtend@^4.0.2, xtend@~4.0.0, xtend@~4.0.1:
   version "4.0.2"
   resolved "https://registry.npmmirror.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
   integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
 
+xtend@~2.1.1:
+  version "2.1.2"
+  resolved "https://registry.npmmirror.com/xtend/-/xtend-2.1.2.tgz#6efecc2a4dad8e6962c4901b337ce7ba87b5d28b"
+  integrity sha512-vMNKzr2rHP9Dp/e1NQFnLQlwlhp9L/LfvnsVdHxN1f+uggyVI3i08uD14GPvCToPkdsRfyPqIyYGmIk58V98ZQ==
+  dependencies:
+    object-keys "~0.4.0"
+
 y18n@^4.0.0:
   version "4.0.3"
   resolved "https://registry.npmmirror.com/y18n/-/y18n-4.0.3.tgz#b5f259c82cd6e336921efd7bfd8bf560de9eeedf"