From 197d60430e96a17083bc2aed40bc1afdf335d164 Mon Sep 17 00:00:00 2001
From: gozzy <samuel.jj.gosling@gmail.com>
Date: Wed, 9 Nov 2022 02:55:13 +0000
Subject: [PATCH] worker thread rpc batching

---
 assets/README.md        |   7 -
 assets/events.worker.js |  57 +++++
 nuxt.config.js          |  15 +-
 package.json            |   5 +-
 services/events.js      | 122 +++++++----
 utils/index.js          |  13 ++
 yarn.lock               | 472 +++++++++++++++++++++++++++++++++++++++-
 7 files changed, 632 insertions(+), 59 deletions(-)
 delete mode 100644 assets/README.md
 create mode 100644 assets/events.worker.js

diff --git a/assets/README.md b/assets/README.md
deleted file mode 100644
index 34766f9..0000000
--- a/assets/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-# ASSETS
-
-**This directory is not required, you can delete it if you don't want to use it.**
-
-This directory contains your un-compiled assets such as LESS, SASS, or JavaScript.
-
-More information about the usage of this directory in [the documentation](https://nuxtjs.org/guide/assets#webpacked).
diff --git a/assets/events.worker.js b/assets/events.worker.js
new file mode 100644
index 0000000..2b7e023
--- /dev/null
+++ b/assets/events.worker.js
@@ -0,0 +1,57 @@
+const Web3 = require('web3-eth')
+
+const InstanceABI = require('../abis/Instance.abi.json')
+const networkConfig = require('../networkConfig').default
+
+const getContract = (rpcUrl, netId, currency, amount) => {
+  const provider = new Web3(rpcUrl)
+  const config = networkConfig[`netId${netId}`]
+  const address = config.tokens[currency].instanceAddress[amount]
+  const contract = new provider.Contract(InstanceABI, address)
+
+  return contract
+}
+
+const getBatchEvents = async ({ netId, rpcUrl, currency, amount, type, payload }, [port]) => {
+  try {
+    const { chunkSize, blocks } = payload
+    const contract = getContract(rpcUrl, netId, currency, amount)
+
+    let batchEvents = []
+
+    console.log('Fetching block ranges', blocks)
+
+    for (let x in blocks) {
+      const toBlock = blocks[x]
+      const fromBlock = toBlock - chunkSize
+
+      try {
+        const events = await contract.getPastEvents(type, {
+          fromBlock,
+          toBlock
+        })
+
+        batchEvents = batchEvents.concat(events)
+      } catch (e) {
+        console.log(`Failed to fetch ${toBlock}: ${e}`)
+        x = x - 1
+      }
+    }
+
+    port.postMessage({ result: batchEvents })
+  } catch (e) {
+    port.postMessage({ errorMessage: e })
+  }
+}
+
+const handlePayload = ({ data, ports }) => {
+  switch (data.eventName) {
+    case 'batch_events':
+      getBatchEvents(data, ports)
+      break
+    default:
+      break
+  }
+}
+
+self.addEventListener('message', handlePayload, false)
diff --git a/nuxt.config.js b/nuxt.config.js
index 387fd59..2cc9ad1 100644
--- a/nuxt.config.js
+++ b/nuxt.config.js
@@ -50,7 +50,7 @@ export default {
       {
         'http-equiv': 'Content-Security-Policy',
         content:
-          "img-src 'self' data:;font-src data:;style-src 'self' 'unsafe-inline';connect-src *;script-src 'self' 'unsafe-eval' 'unsafe-inline';default-src 'self';object-src 'none';base-uri 'none';upgrade-insecure-requests;child-src blob:;worker-src blob:;"
+          "img-src 'self' data:;font-src data:;style-src 'self' 'unsafe-inline';connect-src *;script-src 'self' 'unsafe-eval' 'unsafe-inline';default-src 'self';object-src 'none';base-uri 'none';upgrade-insecure-requests; "
       },
       {
         name: 'Referer-Policy',
@@ -178,10 +178,23 @@ export default {
       if (ctx.isClient) {
         config.devtool = hasSourceMaps
       }
+
+      config.output.globalObject = 'this'
+
       config.module.rules.push({
         test: /\.bin$/,
         use: 'arraybuffer-loader'
       })
+      if(ctx.isClient) {
+        config.module.rules.push({
+          test: /\.worker\.js$/,
+          loader: 'worker-loader',
+          exclude: /(node_modules)/,
+          options: {
+            filename: './workers/[name].js',
+          }
+        })
+      }
     },
     plugins: [
       new webpack.IgnorePlugin(/worker_threads/),
diff --git a/package.json b/package.json
index 5aaf5e6..5a960bc 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "update:tree": "node -r esm scripts/updateTree.js --network",
     "generate": "NODE_OPTIONS='--max-old-space-size=8192' nuxt generate && cp dist/404.html dist/ipfs-404.html",
     "check:sync": "node -r esm scripts/checkEventsSync.js",
+    "worker:compile": "babel dist/_nuxt/workers/events.worker.js --out-file static/events.worker.js",
     "ipfsUpload": "node scripts/ipfsUpload.js",
     "deploy:ipfs": "yarn generate && yarn ipfsUpload"
   },
@@ -55,6 +56,7 @@
     "vue-i18n": "^8.15.4",
     "vuex-persistedstate": "^2.7.0",
     "web3": "1.5.2",
+    "web3-eth": "1.8.1-rc.0",
     "websnark": "git+https://development.tornadocash.community/tornadocash/websnark.git#671762fab73f01771d0e7ebcf6b6a3123e193fb4"
   },
   "devDependencies": {
@@ -85,6 +87,7 @@
     "raw-loader": "^3.1.0",
     "sass": "^1.49.9",
     "sass-loader": "^8.0.0",
-    "vue-jest": "^3.0.5"
+    "vue-jest": "^3.0.5",
+    "worker-loader": "^3.0.8"
   }
 }
diff --git a/services/events.js b/services/events.js
index 7ee6133..3473e47 100644
--- a/services/events.js
+++ b/services/events.js
@@ -1,21 +1,22 @@
 import Web3 from 'web3'
 
+import EWorker from '@/assets/events.worker.js'
+
 import graph from '@/services/graph'
 import { download } from '@/store/snark'
 import networkConfig from '@/networkConfig'
 import InstanceABI from '@/abis/Instance.abi.json'
 import { CONTRACT_INSTANCES, eventsType } from '@/constants'
-import { sleep, formatEvents, capitalizeFirstLetter } from '@/utils'
+import { sleep, formatEvents, capitalizeFirstLetter, flattenNArray } from '@/utils'
+
+const MIN_CORES = 2
+const WORKERS_ALLOC = 2
+const HARDWARE_CORES = window.navigator.hardwareConcurrency
+const AVAILABLE_CORES = HARDWARE_CORES / WORKERS_ALLOC || MIN_CORES
+const CORES = Math.max(AVAILABLE_CORES, MIN_CORES)
 
 const supportedCaches = ['1', '56', '100', '137']
 
-let store
-if (process.browser) {
-  window.onNuxtReady(({ $store }) => {
-    store = $store
-  })
-}
-
 class EventService {
   constructor({ netId, amount, currency, factoryMethods }) {
     this.idb = window.$nuxt.$indexedDB(netId)
@@ -28,6 +29,7 @@ class EventService {
     this.currency = currency
 
     this.factoryMethods = factoryMethods
+    this.rpcUrl = this.factoryMethods.getProviderUrl()
     this.contract = this.getContract({ netId, amount, currency })
 
     this.isNative = nativeCurrency === this.currency
@@ -38,6 +40,17 @@ class EventService {
     return `${type}s_${this.currency}_${this.amount}`
   }
 
+  getMessageParams(eventName, type) {
+    return {
+      type: capitalizeFirstLetter(type),
+      currency: this.currency,
+      rpcUrl: this.rpcUrl,
+      amount: this.amount,
+      netId: this.netId,
+      eventName
+    }
+  }
+
   async getEvents(type) {
     let cachedEvents = await this.getEventsFromDB(type)
 
@@ -47,6 +60,7 @@ class EventService {
 
     return cachedEvents
   }
+
   async updateEvents(type, cachedEvents) {
     const { deployedBlock } = networkConfig[`netId${this.netId}`]
 
@@ -273,50 +287,35 @@ class EventService {
       const blockRange = 10000
       const { blockDifference, currentBlockNumber } = await this.getBlocksDiff({ fromBlock })
 
-      let numberParts = blockDifference === 0 ? 1 : Math.ceil(blockDifference / blockRange)
-      const part = Math.ceil(blockDifference / numberParts)
-
-      let events = []
-      let loadedBlocks = 0
-      let toBlock = fromBlock + part
+      const chunks = blockDifference === 0 ? 1 : Math.ceil(blockDifference / blockRange)
+      const chunkSize = Math.ceil(blockDifference / chunks)
 
       if (fromBlock < currentBlockNumber) {
-        if (toBlock >= currentBlockNumber) {
-          toBlock = 'latest'
-          numberParts = 1
-        }
-        if (store.state.loading.progress !== 98) {
-          store.dispatch('loading/updateProgress', { message: 'Fetching the past events', progress: 0 })
-        }
+        const chunk = Math.ceil(chunks / CORES)
+        const digest = new Array(chunks).fill('')
+        const workers = new Array(CORES).fill('')
 
-        for (let i = 0; i < numberParts; i++) {
-          try {
-            await sleep(200)
-            const partOfEvents = await this.getEventsPartFromRpc({ fromBlock, toBlock, type })
-            if (partOfEvents) {
-              events = events.concat(partOfEvents.events)
-            }
-            loadedBlocks += toBlock - fromBlock
-            fromBlock = toBlock
-            toBlock += part
+        const blocks = digest.map((e, i) => chunkSize * (i + 1) + fromBlock)
 
-            const progressInt = parseInt((loadedBlocks / blockDifference) * 100)
-            console.log('Progress: ', progressInt)
-            if (store.state.loading.progress !== 98) {
-              store.dispatch('loading/updateProgress', {
-                message: 'Fetching the past events',
-                progress: progressInt === 100 ? 98 : progressInt
-              })
+        const workerBatches = workers.map((e, i) => {
+          const endIndex = (i + 1) * chunk
+          const startIndex = endIndex - chunk
+
+          return this.openEventThreadPool({
+            ...this.getMessageParams('batch_events', type),
+            payload: {
+              blocks: blocks.slice(startIndex, endIndex),
+              chunkSize
             }
-          } catch {
-            numberParts = numberParts + 1
-          }
-        }
-        if (events.length) {
-          return {
-            events,
-            lastBlock: toBlock === 'latest' ? currentBlockNumber : toBlock
-          }
+          })
+        })
+
+        const results = flattenNArray(await Promise.all(workerBatches))
+        const events = results.map((e) => ({ ...e.returnValues, ...e }))
+
+        return {
+          lastBlock: events[events.length - 1].blockNumber,
+          events
         }
       }
       return undefined
@@ -325,6 +324,28 @@ class EventService {
     }
   }
 
+  openEventThreadPool(message) {
+    return new Promise((resolve, reject) => {
+      // const ipfsPathPrefix = getIPFSPrefix()
+      // const basePath = `${window.location.origin}${ipfsPathPrefix}`
+      // const worker = new Worker(basePath + '/assets/events.workers.js')
+      const worker = new EWorker()
+      const channel = new MessageChannel()
+
+      worker.postMessage(message, [channel.port2])
+
+      channel.port1.onmessage = ({ data }) => {
+        const { result, errorMessage } = data
+        channel.port1.close()
+        if (result) {
+          resolve(result)
+        } else {
+          reject(errorMessage)
+        }
+      }
+    })
+  }
+
   async getEventsFromRpc({ fromBlock, type }) {
     try {
       const { blockDifference } = await this.getBlocksDiff({ fromBlock })
@@ -404,6 +425,10 @@ class EventsFactory {
     return new this.provider.Contract(InstanceABI, address)
   }
 
+  getProviderUrl = () => {
+    return this.provider.currentProvider.host
+  }
+
   getService = (payload) => {
     const instanceName = `${payload.currency}_${payload.amount}`
 
@@ -415,7 +440,8 @@ class EventsFactory {
       ...payload,
       factoryMethods: {
         getContract: this.getContract,
-        getBlockNumber: this.getBlockNumber
+        getBlockNumber: this.getBlockNumber,
+        getProviderUrl: this.getProviderUrl
       }
     })
     this.instances.set(instanceName, instance)
diff --git a/utils/index.js b/utils/index.js
index df30fec..dcec52a 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -8,6 +8,19 @@ export * from './stringUtils'
 export * from './numberUtils'
 export * from './instanceUtils'
 
+const PREFIX_INDEX = 1
+
+export function flattenNArray(arr) {
+  return arr.reduce((flat, toFlatten) => {
+    return flat.concat(Array.isArray(toFlatten) ? flattenNArray(toFlatten) : toFlatten)
+  }, [])
+}
+
+export const getIPFSPrefix = () => {
+  const ipfsPathRegExp = /^(\/(?:ipfs|ipns)\/[^/]+)/
+  return (window.location.pathname.match(ipfsPathRegExp) ?? [])[PREFIX_INDEX] || ''
+}
+
 export function sleep(ms) {
   return new Promise((resolve) => setTimeout(resolve, ms))
 }
diff --git a/yarn.lock b/yarn.lock
index 779643d..ad58012 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1184,7 +1184,23 @@
   resolved "https://registry.yarnpkg.com/@csstools/convert-colors/-/convert-colors-1.4.0.tgz#ad495dc41b12e75d588c6db8b9834f08fa131eb7"
   integrity sha512-5a6wqoJV/xEdbRNKVo6I4hO3VjyDq//8q2f9I6PBAvMesJHFauXDorcNCsr9RzvsZnaWi5NYCcfyqP1QeFHFbw==
 
-"@ethereumjs/common@^2.3.0", "@ethereumjs/common@^2.4.0", "@ethereumjs/common@^2.5.0", "@ethereumjs/common@^2.6.1":
+"@ethereumjs/common@2.5.0":
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/@ethereumjs/common/-/common-2.5.0.tgz#ec61551b31bef7a69d1dc634d8932468866a4268"
+  integrity sha512-DEHjW6e38o+JmB/NO3GZBpW4lpaiBpkFgXF6jLcJ6gETBYpEyaA5nTimsWBUJR3Vmtm/didUEbNjajskugZORg==
+  dependencies:
+    crc-32 "^1.2.0"
+    ethereumjs-util "^7.1.1"
+
+"@ethereumjs/common@^2.3.0", "@ethereumjs/common@^2.4.0", "@ethereumjs/common@^2.6.4":
+  version "2.6.5"
+  resolved "https://registry.yarnpkg.com/@ethereumjs/common/-/common-2.6.5.tgz#0a75a22a046272579d91919cb12d84f2756e8d30"
+  integrity sha512-lRyVQOeCDaIVtgfbowla32pzeDv2Obr8oR8Put5RdUBNRGr1VGPGQNGP6elWIpgK3YdpzqTOh4GyUGOureVeeA==
+  dependencies:
+    crc-32 "^1.2.0"
+    ethereumjs-util "^7.1.5"
+
+"@ethereumjs/common@^2.5.0", "@ethereumjs/common@^2.6.1":
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/@ethereumjs/common/-/common-2.6.2.tgz#eb006c9329c75c80f634f340dc1719a5258244df"
   integrity sha512-vDwye5v0SVeuDky4MtKsu+ogkH2oFUV8pBKzH/eNBzT8oI91pKa8WyzDuYuxOQsgNgv5R34LfFDh2aaw3H4HbQ==
@@ -1192,7 +1208,23 @@
     crc-32 "^1.2.0"
     ethereumjs-util "^7.1.4"
 
-"@ethereumjs/tx@^3.2.1", "@ethereumjs/tx@^3.3.2":
+"@ethereumjs/tx@3.3.2":
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/@ethereumjs/tx/-/tx-3.3.2.tgz#348d4624bf248aaab6c44fec2ae67265efe3db00"
+  integrity sha512-6AaJhwg4ucmwTvw/1qLaZUX5miWrwZ4nLOUsKyb/HtzS3BMw/CasKhdi1ims9mBKeK9sOJCH4qGKOBGyJCeeog==
+  dependencies:
+    "@ethereumjs/common" "^2.5.0"
+    ethereumjs-util "^7.1.2"
+
+"@ethereumjs/tx@^3.2.1":
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/@ethereumjs/tx/-/tx-3.5.2.tgz#197b9b6299582ad84f9527ca961466fce2296c1c"
+  integrity sha512-gQDNJWKrSDGu2w7w0PzVXVBNMzb7wwdDOmOqczmhNjqFxFuIbhVJDwiGEnxFNC2/b8ifcZzY7MLcluizohRzNw==
+  dependencies:
+    "@ethereumjs/common" "^2.6.4"
+    ethereumjs-util "^7.1.5"
+
+"@ethereumjs/tx@^3.3.2":
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/@ethereumjs/tx/-/tx-3.5.0.tgz#783b0aeb08518b9991b23f5155763bbaf930a037"
   integrity sha512-/+ZNbnJhQhXC83Xuvy6I9k4jT5sXiV0tMR9C+AzSSpcCV64+NB8dTE1m3x98RYMqb8+TLYWA+HML4F5lfXTlJw==
@@ -1230,6 +1262,21 @@
     "@ethersproject/properties" "^5.6.0"
     "@ethersproject/strings" "^5.6.0"
 
+"@ethersproject/abi@^5.6.3":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.7.0.tgz#b3f3e045bbbeed1af3947335c247ad625a44e449"
+  integrity sha512-351ktp42TiRcYB3H1OP8yajPeAQstMW/yCFokj/AthP9bLHzQFPlOrxOcwYEDkUAICmOHljvN4K39OMTMUa9RA==
+  dependencies:
+    "@ethersproject/address" "^5.7.0"
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/constants" "^5.7.0"
+    "@ethersproject/hash" "^5.7.0"
+    "@ethersproject/keccak256" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    "@ethersproject/strings" "^5.7.0"
+
 "@ethersproject/abstract-provider@5.6.0", "@ethersproject/abstract-provider@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.6.0.tgz#0c4ac7054650dbd9c476cf5907f588bbb6ef3061"
@@ -1243,6 +1290,19 @@
     "@ethersproject/transactions" "^5.6.0"
     "@ethersproject/web" "^5.6.0"
 
+"@ethersproject/abstract-provider@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.7.0.tgz#b0a8550f88b6bf9d51f90e4795d48294630cb9ef"
+  integrity sha512-R41c9UkchKCpAqStMYUpdunjo3pkEvZC3FAwZn5S5MGbXoMQOHIdHItezTETxAO5bevtMApSyEhn9+CHcDsWBw==
+  dependencies:
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/networks" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    "@ethersproject/transactions" "^5.7.0"
+    "@ethersproject/web" "^5.7.0"
+
 "@ethersproject/abstract-signer@5.6.0", "@ethersproject/abstract-signer@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.6.0.tgz#9cd7ae9211c2b123a3b29bf47aab17d4d016e3e7"
@@ -1254,6 +1314,17 @@
     "@ethersproject/logger" "^5.6.0"
     "@ethersproject/properties" "^5.6.0"
 
+"@ethersproject/abstract-signer@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.7.0.tgz#13f4f32117868452191a4649723cb086d2b596b2"
+  integrity sha512-a16V8bq1/Cz+TGCkE2OPMTOUDLS3grCpdjoJCYNnVBbdYEMSgKrU0+B90s8b6H+ByYTBZN7a3g76jdIJi7UfKQ==
+  dependencies:
+    "@ethersproject/abstract-provider" "^5.7.0"
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+
 "@ethersproject/address@5.6.0", "@ethersproject/address@^5.0.4", "@ethersproject/address@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.6.0.tgz#13c49836d73e7885fc148ad633afad729da25012"
@@ -1265,6 +1336,17 @@
     "@ethersproject/logger" "^5.6.0"
     "@ethersproject/rlp" "^5.6.0"
 
+"@ethersproject/address@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.7.0.tgz#19b56c4d74a3b0a46bfdbb6cfcc0a153fc697f37"
+  integrity sha512-9wYhYt7aghVGo758POM5nqcOMaE168Q6aRLJZwUmiqSrAungkG74gSSeKEIR7ukixesdRZGPgVqme6vmxs1fkA==
+  dependencies:
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/keccak256" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/rlp" "^5.7.0"
+
 "@ethersproject/base64@5.6.0", "@ethersproject/base64@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.6.0.tgz#a12c4da2a6fb86d88563216b0282308fc15907c9"
@@ -1272,6 +1354,13 @@
   dependencies:
     "@ethersproject/bytes" "^5.6.0"
 
+"@ethersproject/base64@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.7.0.tgz#ac4ee92aa36c1628173e221d0d01f53692059e1c"
+  integrity sha512-Dr8tcHt2mEbsZr/mwTPIQAf3Ai0Bks/7gTw9dSqk1mQvhW3XvRlmDJr/4n+wg1JmCl16NZue17CDh8xb/vZ0sQ==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+
 "@ethersproject/basex@5.6.0", "@ethersproject/basex@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/basex/-/basex-5.6.0.tgz#9ea7209bf0a1c3ddc2a90f180c3a7f0d7d2e8a69"
@@ -1289,6 +1378,15 @@
     "@ethersproject/logger" "^5.6.0"
     bn.js "^4.11.9"
 
+"@ethersproject/bignumber@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.7.0.tgz#e2f03837f268ba655ffba03a57853e18a18dc9c2"
+  integrity sha512-n1CAdIHRWjSucQO3MC1zPSVgV/6dy/fjL9pMrPP9peL+QxEg9wOsVqwD4+818B6LUEtaXzVHQiuivzRoxPxUGw==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    bn.js "^5.2.1"
+
 "@ethersproject/bytes@5.6.0", "@ethersproject/bytes@^5.0.4", "@ethersproject/bytes@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.6.0.tgz#81652f2a0e04533575befadce555213c11d8aa20"
@@ -1296,6 +1394,13 @@
   dependencies:
     "@ethersproject/logger" "^5.6.0"
 
+"@ethersproject/bytes@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.7.0.tgz#a00f6ea8d7e7534d6d87f47188af1148d71f155d"
+  integrity sha512-nsbxwgFXWh9NyYWo+U8atvmMsSdKJprTcICAkvbBffT75qDocbuggBU0SJiVK2MuTrp0q+xvLkTnGMPK1+uA9A==
+  dependencies:
+    "@ethersproject/logger" "^5.7.0"
+
 "@ethersproject/constants@5.6.0", "@ethersproject/constants@^5.0.4", "@ethersproject/constants@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.6.0.tgz#55e3eb0918584d3acc0688e9958b0cedef297088"
@@ -1303,6 +1408,13 @@
   dependencies:
     "@ethersproject/bignumber" "^5.6.0"
 
+"@ethersproject/constants@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.7.0.tgz#df80a9705a7e08984161f09014ea012d1c75295e"
+  integrity sha512-DHI+y5dBNvkpYUMiRQyxRBYBefZkJfo70VUkUAsRjcPs47muV9evftfZ0PJVCXYbAiCgght0DtcF9srFQmIgWA==
+  dependencies:
+    "@ethersproject/bignumber" "^5.7.0"
+
 "@ethersproject/contracts@5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/contracts/-/contracts-5.6.0.tgz#60f2cfc7addd99a865c6c8cfbbcec76297386067"
@@ -1333,6 +1445,21 @@
     "@ethersproject/properties" "^5.6.0"
     "@ethersproject/strings" "^5.6.0"
 
+"@ethersproject/hash@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.7.0.tgz#eb7aca84a588508369562e16e514b539ba5240a7"
+  integrity sha512-qX5WrQfnah1EFnO5zJv1v46a8HW0+E5xuBBDTwMFZLuVTx0tbU2kkx15NqdjxecrLGatQN9FGQKpb1FKdHCt+g==
+  dependencies:
+    "@ethersproject/abstract-signer" "^5.7.0"
+    "@ethersproject/address" "^5.7.0"
+    "@ethersproject/base64" "^5.7.0"
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/keccak256" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    "@ethersproject/strings" "^5.7.0"
+
 "@ethersproject/hdnode@5.6.0", "@ethersproject/hdnode@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/hdnode/-/hdnode-5.6.0.tgz#9dcbe8d629bbbcf144f2cae476337fe92d320998"
@@ -1378,11 +1505,24 @@
     "@ethersproject/bytes" "^5.6.0"
     js-sha3 "0.8.0"
 
+"@ethersproject/keccak256@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.7.0.tgz#3186350c6e1cd6aba7940384ec7d6d9db01f335a"
+  integrity sha512-2UcPboeL/iW+pSg6vZ6ydF8tCnv3Iu/8tUmLLzWWGzxWKFFqOBQFLo6uLUv6BDrLgCDfN28RJ/wtByx+jZ4KBg==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+    js-sha3 "0.8.0"
+
 "@ethersproject/logger@5.6.0", "@ethersproject/logger@^5.0.5", "@ethersproject/logger@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.6.0.tgz#d7db1bfcc22fd2e4ab574cba0bb6ad779a9a3e7a"
   integrity sha512-BiBWllUROH9w+P21RzoxJKzqoqpkyM1pRnEKG69bulE9TSQD8SAIvTQqIMZmmCO8pUNkgLP1wndX1gKghSpBmg==
 
+"@ethersproject/logger@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.7.0.tgz#6ce9ae168e74fecf287be17062b590852c311892"
+  integrity sha512-0odtFdXu/XHtjQXJYA3u9G0G8btm0ND5Cu8M7i5vhEcE8/HmF4Lbdqanwyv4uQTr2tx6b7fQRmgLrsnpQlmnig==
+
 "@ethersproject/networks@5.6.0", "@ethersproject/networks@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.6.0.tgz#486d03fff29b4b6b5414d47a232ded09fe10de5e"
@@ -1390,6 +1530,13 @@
   dependencies:
     "@ethersproject/logger" "^5.6.0"
 
+"@ethersproject/networks@^5.7.0":
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.7.1.tgz#118e1a981d757d45ccea6bb58d9fd3d9db14ead6"
+  integrity sha512-n/MufjFYv3yFcUyfhnXotyDlNdFb7onmkSy8aQERi2PjNcnWQ66xXxa3XlS8nCcA8aJKJjIIMNJTC7tu80GwpQ==
+  dependencies:
+    "@ethersproject/logger" "^5.7.0"
+
 "@ethersproject/pbkdf2@5.6.0", "@ethersproject/pbkdf2@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/pbkdf2/-/pbkdf2-5.6.0.tgz#04fcc2d7c6bff88393f5b4237d906a192426685a"
@@ -1405,6 +1552,13 @@
   dependencies:
     "@ethersproject/logger" "^5.6.0"
 
+"@ethersproject/properties@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.7.0.tgz#a6e12cb0439b878aaf470f1902a176033067ed30"
+  integrity sha512-J87jy8suntrAkIZtecpxEPxY//szqr1mlBaYlQ0r4RCaiD2hjheqF9s1LVE8vVuJCXisjIP+JgtK/Do54ej4Sw==
+  dependencies:
+    "@ethersproject/logger" "^5.7.0"
+
 "@ethersproject/providers@5.6.1":
   version "5.6.1"
   resolved "https://registry.yarnpkg.com/@ethersproject/providers/-/providers-5.6.1.tgz#9a05f00ecbac59565bf6907c8d2af8ac33303b48"
@@ -1446,6 +1600,14 @@
     "@ethersproject/bytes" "^5.6.0"
     "@ethersproject/logger" "^5.6.0"
 
+"@ethersproject/rlp@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/rlp/-/rlp-5.7.0.tgz#de39e4d5918b9d74d46de93af80b7685a9c21304"
+  integrity sha512-rBxzX2vK8mVF7b0Tol44t5Tb8gomOHkj5guL+HhzQ1yBh/ydjGnpw6at+X6Iw0Kp3OzzzkcKp8N9r0W4kYSs9w==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+
 "@ethersproject/sha2@5.6.0", "@ethersproject/sha2@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/sha2/-/sha2-5.6.0.tgz#364c4c11cc753bda36f31f001628706ebadb64d9"
@@ -1467,6 +1629,18 @@
     elliptic "6.5.4"
     hash.js "1.1.7"
 
+"@ethersproject/signing-key@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/signing-key/-/signing-key-5.7.0.tgz#06b2df39411b00bc57c7c09b01d1e41cf1b16ab3"
+  integrity sha512-MZdy2nL3wO0u7gkB4nA/pEf8lu1TlFswPNmy8AiYkfKTdO6eXBJyUdmHO/ehm/htHw9K/qF8ujnTyUAD+Ry54Q==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    bn.js "^5.2.1"
+    elliptic "6.5.4"
+    hash.js "1.1.7"
+
 "@ethersproject/solidity@5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/solidity/-/solidity-5.6.0.tgz#64657362a596bf7f5630bdc921c07dd78df06dc3"
@@ -1488,6 +1662,15 @@
     "@ethersproject/constants" "^5.6.0"
     "@ethersproject/logger" "^5.6.0"
 
+"@ethersproject/strings@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.7.0.tgz#54c9d2a7c57ae8f1205c88a9d3a56471e14d5ed2"
+  integrity sha512-/9nu+lj0YswRNSH0NXYqrh8775XNyEdUQAuf3f+SmOrnVewcJ5SBNAjF7lpgehKi4abvNNXyf+HX86czCdJ8Mg==
+  dependencies:
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/constants" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+
 "@ethersproject/transactions@5.6.0", "@ethersproject/transactions@^5.0.0-beta.135", "@ethersproject/transactions@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.6.0.tgz#4b594d73a868ef6e1529a2f8f94a785e6791ae4e"
@@ -1503,6 +1686,21 @@
     "@ethersproject/rlp" "^5.6.0"
     "@ethersproject/signing-key" "^5.6.0"
 
+"@ethersproject/transactions@^5.6.2", "@ethersproject/transactions@^5.7.0":
+  version "5.7.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.7.0.tgz#91318fc24063e057885a6af13fdb703e1f993d3b"
+  integrity sha512-kmcNicCp1lp8qanMTC3RIikGgoJ80ztTyvtsFvCYpSCfkjhD0jZ2LOrnbcuxuToLIUYYf+4XwD1rP+B/erDIhQ==
+  dependencies:
+    "@ethersproject/address" "^5.7.0"
+    "@ethersproject/bignumber" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/constants" "^5.7.0"
+    "@ethersproject/keccak256" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    "@ethersproject/rlp" "^5.7.0"
+    "@ethersproject/signing-key" "^5.7.0"
+
 "@ethersproject/units@5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/units/-/units-5.6.0.tgz#e5cbb1906988f5740254a21b9ded6bd51e826d9c"
@@ -1544,6 +1742,17 @@
     "@ethersproject/properties" "^5.6.0"
     "@ethersproject/strings" "^5.6.0"
 
+"@ethersproject/web@^5.7.0":
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/@ethersproject/web/-/web-5.7.1.tgz#de1f285b373149bee5928f4eb7bcb87ee5fbb4ae"
+  integrity sha512-Gueu8lSvyjBWL4cYsWsjh6MtMwM0+H4HvqFPZfB6dV8ctbP9zFAO73VG1cMWae0FLPCtz0peKPpZY8/ugJJX2w==
+  dependencies:
+    "@ethersproject/base64" "^5.7.0"
+    "@ethersproject/bytes" "^5.7.0"
+    "@ethersproject/logger" "^5.7.0"
+    "@ethersproject/properties" "^5.7.0"
+    "@ethersproject/strings" "^5.7.0"
+
 "@ethersproject/wordlists@5.6.0", "@ethersproject/wordlists@^5.6.0":
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/wordlists/-/wordlists-5.6.0.tgz#79e62c5276e091d8575f6930ba01a29218ded032"
@@ -2804,6 +3013,11 @@ abbrev@1:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
+abortcontroller-polyfill@^1.7.3:
+  version "1.7.5"
+  resolved "https://registry.yarnpkg.com/abortcontroller-polyfill/-/abortcontroller-polyfill-1.7.5.tgz#6738495f4e901fbb57b6c0611d0c75f76c485bed"
+  integrity sha512-JMJ5soJWP18htbbxJjG7bG6yuI6pRhgJ0scHHTfkUjf6wjP912xZWvM+A4sJK3gqd9E8fcPbDnOefbA9Th/FIQ==
+
 abstract-leveldown@~2.6.0:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz#1c5e8c6a5ef965ae8c35dfb3a8770c476b82c4b8"
@@ -4062,6 +4276,11 @@ bn.js@^5.1.2, bn.js@^5.2.0:
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.2.0.tgz#358860674396c6997771a9d051fcc1b57d4ae002"
   integrity sha512-D7iWRBvnZE8ecXiLj/9wbxH7Tk79fAh8IHaTNq1RWRixsS02W+5qS+iE9yq6RYl0asXx5tw0bLhmT5pIfbSquw==
 
+bn.js@^5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.2.1.tgz#0bc527a6a0d18d0aa8d5b0538ce4a77dccfa7b70"
+  integrity sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ==
+
 body-parser@1.19.0:
   version "1.19.0"
   resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
@@ -5365,6 +5584,13 @@ cross-fetch@^2.1.0:
     node-fetch "2.6.1"
     whatwg-fetch "2.0.4"
 
+cross-fetch@^3.1.4:
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.1.5.tgz#e1389f44d9e7ba767907f7af8454787952ab534f"
+  integrity sha512-lvb1SBsI0Z7GDwmuid+mU3kWVBwTVUbe7S0H52yaaAdQOXq2YktTCZdlAcNKFzE6QtRz0snpw9bNiPeOIkkQvw==
+  dependencies:
+    node-fetch "2.6.7"
+
 cross-spawn@^5.0.1:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
@@ -6272,6 +6498,11 @@ es6-iterator@^2.0.3:
     es5-ext "^0.10.35"
     es6-symbol "^3.1.1"
 
+es6-promise@^4.2.8:
+  version "4.2.8"
+  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.8.tgz#4eb21594c972bc40553d276e510539143db53e0a"
+  integrity sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==
+
 es6-symbol@^3.1.1, es6-symbol@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/es6-symbol/-/es6-symbol-3.1.3.tgz#bad5d3c1bcdac28269f4cb331e431c78ac705d18"
@@ -6944,6 +7175,17 @@ ethereumjs-util@^7.0.10, ethereumjs-util@^7.1.0, ethereumjs-util@^7.1.4:
     ethereum-cryptography "^0.1.3"
     rlp "^2.2.4"
 
+ethereumjs-util@^7.1.1, ethereumjs-util@^7.1.2, ethereumjs-util@^7.1.5:
+  version "7.1.5"
+  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-7.1.5.tgz#9ecf04861e4fbbeed7465ece5f23317ad1129181"
+  integrity sha512-SDl5kKrQAudFBUe5OJM9Ac6WmMyYmXX/6sTmLZ3ffG2eY6ZIGBes3pEDxNN6V72WyOw4CPD5RomKdsa8DAAwLg==
+  dependencies:
+    "@types/bn.js" "^5.1.0"
+    bn.js "^5.1.2"
+    create-hash "^1.1.2"
+    ethereum-cryptography "^0.1.3"
+    rlp "^2.2.4"
+
 ethereumjs-vm@^2.3.4:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-2.6.0.tgz#76243ed8de031b408793ac33907fb3407fe400c6"
@@ -11007,6 +11249,13 @@ node-fetch@2.6.1, node-fetch@^2.6.1:
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
   integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
 
+node-fetch@2.6.7:
+  version "2.6.7"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
+  integrity sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==
+  dependencies:
+    whatwg-url "^5.0.0"
+
 node-fetch@^2.6.0:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
@@ -15359,6 +15608,11 @@ uuid@^3.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.3.tgz#4568f0216e78760ee1dbf3a4d2cf53e224112866"
   integrity sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ==
 
+uuid@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-9.0.0.tgz#592f550650024a38ceb0c562f2f6aa435761efb5"
+  integrity sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==
+
 v-idle@^0.2.0:
   version "0.2.0"
   resolved "https://registry.npmjs.org/v-idle/-/v-idle-0.2.0.tgz#340e67f44f4e3d1edf7804b9e71b2e65cb88f85e"
@@ -15654,6 +15908,14 @@ web3-core-helpers@1.7.1:
     web3-eth-iban "1.7.1"
     web3-utils "1.7.1"
 
+web3-core-helpers@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.8.1-rc.0.tgz#374d0fa0d2070657a69bf666d8f31e0f438cfa16"
+  integrity sha512-f5Cph5YQ2EuFkNHnid4q94R5xlC/3I/W6tTy7hkmrtoR+709F8bWn87VQqjao97lGK3NZd0DlX4cxF7kO/9lsA==
+  dependencies:
+    web3-eth-iban "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-core-method@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.5.2.tgz#d1d602657be1000a29d11e3ca3bf7bc778dea9a5"
@@ -15677,6 +15939,17 @@ web3-core-method@1.7.1:
     web3-core-subscriptions "1.7.1"
     web3-utils "1.7.1"
 
+web3-core-method@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.8.1-rc.0.tgz#a2f8ce805f230f99de3413a56a72ee292a42a932"
+  integrity sha512-b5mA6sgsFIa1z7Gp/uKA7fX4x4ptbYGz+jE9vWQHyL7qyWc0HULSxPl1+K8RBMJ9vzpzJqptjdJCtu7DYT/ZYQ==
+  dependencies:
+    "@ethersproject/transactions" "^5.6.2"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-promievent "1.8.1-rc.0"
+    web3-core-subscriptions "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-core-promievent@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.5.2.tgz#2dc9fe0e5bbeb7c360fc1aac5f12b32d9949a59b"
@@ -15691,6 +15964,13 @@ web3-core-promievent@1.7.1:
   dependencies:
     eventemitter3 "4.0.4"
 
+web3-core-promievent@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.8.1-rc.0.tgz#222e33ab0b31725f5f1a35ea810b97aa7acd46cd"
+  integrity sha512-kHE1Pvl4kz86KvCOanyTW8K4CvMwxQ+PC66zPuhMigwpFM9Uwa0Kyp/DjH7TQEVN2cllpH/0l8nUNIRTzWnR4A==
+  dependencies:
+    eventemitter3 "4.0.4"
+
 web3-core-requestmanager@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.5.2.tgz#43ccc00779394c941b28e6e07e217350fd1ded71"
@@ -15713,6 +15993,17 @@ web3-core-requestmanager@1.7.1:
     web3-providers-ipc "1.7.1"
     web3-providers-ws "1.7.1"
 
+web3-core-requestmanager@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.8.1-rc.0.tgz#37bcc754289e5b91bb5e2bb75a53b33730f50b61"
+  integrity sha512-kwnq77XyRXsRh980OxH5DPSsMT0GT3jfz9ghbY0c3aHAt34njZMHIuiHVePqxjvjjqBd1wFEwSMR08sXXlrzWQ==
+  dependencies:
+    util "^0.12.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-providers-http "1.8.1-rc.0"
+    web3-providers-ipc "1.8.1-rc.0"
+    web3-providers-ws "1.8.1-rc.0"
+
 web3-core-subscriptions@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.5.2.tgz#8eaebde44f81fc13c45b555c4422fe79393da9cf"
@@ -15729,6 +16020,14 @@ web3-core-subscriptions@1.7.1:
     eventemitter3 "4.0.4"
     web3-core-helpers "1.7.1"
 
+web3-core-subscriptions@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.8.1-rc.0.tgz#218161818bb87a27c8903cebcd76b5ee5f098cb5"
+  integrity sha512-utOV38ZyJCQIKW5ZlR3dYqj1DnZ1+FiN1YMWKmZV9Bebu1HBcYLwqXoI7JkpV4mvvaSdxaADlhC2d8b4JzIVcw==
+  dependencies:
+    eventemitter3 "4.0.4"
+    web3-core-helpers "1.8.1-rc.0"
+
 web3-core@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.5.2.tgz#ca2b9b1ed3cf84d48b31c9bb91f7628f97cfdcd5"
@@ -15755,6 +16054,19 @@ web3-core@1.7.1:
     web3-core-requestmanager "1.7.1"
     web3-utils "1.7.1"
 
+web3-core@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.8.1-rc.0.tgz#6982b9de026693fb378fc55276b647a2a97540ac"
+  integrity sha512-lZdqdamYsgRFlAofiV84sRjTgcmpfMz/P2yuB+cBW7nO88gUtIxgEqKEwoFhAtf85DzYUxW7CIyP2VBLqtMZmQ==
+  dependencies:
+    "@types/bn.js" "^5.1.0"
+    "@types/node" "^12.12.6"
+    bignumber.js "^9.0.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-core-requestmanager "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-abi@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.5.2.tgz#b627eada967f39ae4657ddd61b693cb00d55cb29"
@@ -15771,6 +16083,14 @@ web3-eth-abi@1.7.1:
     "@ethersproject/abi" "5.0.7"
     web3-utils "1.7.1"
 
+web3-eth-abi@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.8.1-rc.0.tgz#b16374e5ec71d16afa3ab08c2298f09deff3ff0c"
+  integrity sha512-QkHPtc02e9pmCmG9ZsBYZ3LYa/WJYW0u6M8k7gcpgYsChvB6Phy5zLSQGzc2+kg8FPVFNycppNIQhPv6yfmqPg==
+  dependencies:
+    "@ethersproject/abi" "^5.6.3"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-accounts@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.5.2.tgz#cf506c21037fa497fe42f1f055980ce4acf83731"
@@ -15805,6 +16125,23 @@ web3-eth-accounts@1.7.1:
     web3-core-method "1.7.1"
     web3-utils "1.7.1"
 
+web3-eth-accounts@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.8.1-rc.0.tgz#af4d7899b5575d09b0d7dbf3b12fef4924cf9414"
+  integrity sha512-HWVVtqgWTWFfP9oSix4LmdbBfby98oXncSmFGCHnptg3BzDSFg88tP0yurYxiVu/i2uej3gyHGoSl9ufgOy5YA==
+  dependencies:
+    "@ethereumjs/common" "2.5.0"
+    "@ethereumjs/tx" "3.3.2"
+    crypto-browserify "3.12.0"
+    eth-lib "0.2.8"
+    ethereumjs-util "^7.0.10"
+    scrypt-js "^3.0.1"
+    uuid "^9.0.0"
+    web3-core "1.8.1-rc.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-contract@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.5.2.tgz#ffbd799fd01e36596aaadefba323e24a98a23c2f"
@@ -15833,6 +16170,20 @@ web3-eth-contract@1.7.1:
     web3-eth-abi "1.7.1"
     web3-utils "1.7.1"
 
+web3-eth-contract@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.8.1-rc.0.tgz#7c21ea1fc5ae9d378bd22e3e68f6694603927d1d"
+  integrity sha512-HQU8C1MHozX2RTs6Q0sXrFiW9YwiT6JJxzInrqP2KygePKWsk44iPICKuDwL0AZByfJP2HdGuKix57mo5XvwMw==
+  dependencies:
+    "@types/bn.js" "^5.1.0"
+    web3-core "1.8.1-rc.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-core-promievent "1.8.1-rc.0"
+    web3-core-subscriptions "1.8.1-rc.0"
+    web3-eth-abi "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-ens@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.5.2.tgz#ecb3708f0e8e2e847e9d89e8428da12c30bba6a4"
@@ -15861,6 +16212,20 @@ web3-eth-ens@1.7.1:
     web3-eth-contract "1.7.1"
     web3-utils "1.7.1"
 
+web3-eth-ens@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.8.1-rc.0.tgz#2ecce5b66453eae670f25699247cb3f2aead35db"
+  integrity sha512-lQodmBPn1ANN/TuQcywXJHUwJwH0SwNP1N1eodLfYRtmGzJrR11b2OyHM3LDFfAkxX0pVJ/rdz6Hyi8SkbOvNg==
+  dependencies:
+    content-hash "^2.5.2"
+    eth-ens-namehash "2.0.8"
+    web3-core "1.8.1-rc.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-promievent "1.8.1-rc.0"
+    web3-eth-abi "1.8.1-rc.0"
+    web3-eth-contract "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-iban@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.5.2.tgz#f390ad244ef8a6c94de7c58736b0b80a484abc8e"
@@ -15877,6 +16242,14 @@ web3-eth-iban@1.7.1:
     bn.js "^4.11.9"
     web3-utils "1.7.1"
 
+web3-eth-iban@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.8.1-rc.0.tgz#a13da287f202171bd3fe2c6c84744d095c5e1bb5"
+  integrity sha512-YpPYiO16TR5HGvD0Yz4fRUk1L3gpnZsZS6BZJwx/veN1s29k/pO43AOZwvIQi2RcQ5ht931kVX+CmeWwWR5Z2w==
+  dependencies:
+    bn.js "^5.2.1"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth-personal@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.5.2.tgz#043335a19ab59e119ba61e3bd6c3b8cde8120490"
@@ -15901,6 +16274,18 @@ web3-eth-personal@1.7.1:
     web3-net "1.7.1"
     web3-utils "1.7.1"
 
+web3-eth-personal@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.8.1-rc.0.tgz#9d908217754f721b4a099f98bfc07a5d6fa7832e"
+  integrity sha512-oxZaFVStDNZa7oRW3bMWD/5fFSGkT4KkTdPFycbw/P+/oQFAUhdFhLAQVIglwzN8vw4xIGAW9cHMQvsz0luwPA==
+  dependencies:
+    "@types/node" "^12.12.6"
+    web3-core "1.8.1-rc.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-net "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-eth@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.5.2.tgz#0f6470df60a2a7d04df4423ca7721db8ed5ad72b"
@@ -15937,6 +16322,24 @@ web3-eth@1.7.1:
     web3-net "1.7.1"
     web3-utils "1.7.1"
 
+web3-eth@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.8.1-rc.0.tgz#4af5b66f0c2f4e528711e7334c54f6d477c3e867"
+  integrity sha512-XMv89hFws1ySPdNfLj2I4X/zD4k7J9BnoxYXGutwbxWf5eJeBfnvvVYtN71/v+i7QPCtvmRd4ds7WEhyeMM+mg==
+  dependencies:
+    web3-core "1.8.1-rc.0"
+    web3-core-helpers "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-core-subscriptions "1.8.1-rc.0"
+    web3-eth-abi "1.8.1-rc.0"
+    web3-eth-accounts "1.8.1-rc.0"
+    web3-eth-contract "1.8.1-rc.0"
+    web3-eth-ens "1.8.1-rc.0"
+    web3-eth-iban "1.8.1-rc.0"
+    web3-eth-personal "1.8.1-rc.0"
+    web3-net "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-net@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.5.2.tgz#58915d7e2dad025d2a08f02c865f3abe61c48eff"
@@ -15955,6 +16358,15 @@ web3-net@1.7.1:
     web3-core-method "1.7.1"
     web3-utils "1.7.1"
 
+web3-net@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.8.1-rc.0.tgz#f280fcfb25de35a18539eef2338cb1eeeda1239d"
+  integrity sha512-7P2pvsLf5jXq8y20caTXhknN4452758aD5ZoNvtnsVledigvXzYQFaLklDsjT6kWwceCxWj3An5I9eK0Y7NdbA==
+  dependencies:
+    web3-core "1.8.1-rc.0"
+    web3-core-method "1.8.1-rc.0"
+    web3-utils "1.8.1-rc.0"
+
 web3-provider-engine@16.0.1:
   version "16.0.1"
   resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-16.0.1.tgz#2600a39ede364cdc0a1fc773bf40a94f2177e605"
@@ -15999,6 +16411,16 @@ web3-providers-http@1.7.1:
     web3-core-helpers "1.7.1"
     xhr2-cookies "1.1.0"
 
+web3-providers-http@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.8.1-rc.0.tgz#d0d9cffeeebe5e0392d83e3c4bec9c5c94a6df97"
+  integrity sha512-0HB3gokbazwX66OOyQAdfVRhRfY9wc7it7+zM8o4V5yPx59D1hrWftv7/NGDU55r6f/8EMz/zAUWse0S42ek6A==
+  dependencies:
+    abortcontroller-polyfill "^1.7.3"
+    cross-fetch "^3.1.4"
+    es6-promise "^4.2.8"
+    web3-core-helpers "1.8.1-rc.0"
+
 web3-providers-ipc@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.5.2.tgz#68a516883c998eeddf60df4cead77baca4fb4aaa"
@@ -16015,6 +16437,14 @@ web3-providers-ipc@1.7.1:
     oboe "2.1.5"
     web3-core-helpers "1.7.1"
 
+web3-providers-ipc@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.8.1-rc.0.tgz#6169cbcb200b2ca6425460ab46b123336bbb2f09"
+  integrity sha512-FO4eqYbB/5WTFxi+jk4YdR2DkQYBcOgBmc7MQHgZrkt/xg3yvyY84RA315U6XO3qJNnKhC4KXdPA4awPqV7bXA==
+  dependencies:
+    oboe "2.1.5"
+    web3-core-helpers "1.8.1-rc.0"
+
 web3-providers-ws@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.5.2.tgz#d336a93ed608b40cdcadfadd1f1bc8d32ea046e0"
@@ -16033,6 +16463,15 @@ web3-providers-ws@1.7.1:
     web3-core-helpers "1.7.1"
     websocket "^1.0.32"
 
+web3-providers-ws@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.8.1-rc.0.tgz#9c6b7faf3d8245c8a2b8e7993d72f1ba331c3a33"
+  integrity sha512-runzmGqfYf6INulmmXncIjYSqS+8t6z8Bibt1hNXNN6BNGo8ipUxHo/HLHxmwH+sNS5gJtN0QahI+ZDOjc9MRA==
+  dependencies:
+    eventemitter3 "4.0.4"
+    web3-core-helpers "1.8.1-rc.0"
+    websocket "^1.0.32"
+
 web3-shh@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.5.2.tgz#a72a3d903c0708a004db94a72d934a302d880aea"
@@ -16079,6 +16518,19 @@ web3-utils@1.7.1, web3-utils@^1.3.0:
     randombytes "^2.1.0"
     utf8 "3.0.0"
 
+web3-utils@1.8.1-rc.0:
+  version "1.8.1-rc.0"
+  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.8.1-rc.0.tgz#5d741154a4d7499b98b1319a7ed944268ea7a0be"
+  integrity sha512-Mp4tHaJfflQc00N925W2Q+JP975zQmCj82n2ylQHdDP5Kcg1RyySLZ9ugeVefB049frPtrGJ2h9i6uuKLkhzzQ==
+  dependencies:
+    bn.js "^5.2.1"
+    ethereum-bloom-filters "^1.0.6"
+    ethereumjs-util "^7.1.0"
+    ethjs-unit "0.1.6"
+    number-to-bn "1.7.0"
+    randombytes "^2.1.0"
+    utf8 "3.0.0"
+
 web3@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/web3/-/web3-1.5.2.tgz#736ca2f39048c63964203dd811f519400973e78d"
@@ -16262,6 +16714,14 @@ whatwg-url@^2.0.1:
     tr46 "~0.0.3"
     webidl-conversions "^3.0.0"
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.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"
+
 whatwg-url@^6.4.1:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.5.0.tgz#f2df02bff176fd65070df74ad5ccbb5a199965a8"
@@ -16360,6 +16820,14 @@ worker-farm@^1.7.0:
   dependencies:
     errno "~0.1.7"
 
+worker-loader@^3.0.8:
+  version "3.0.8"
+  resolved "https://registry.yarnpkg.com/worker-loader/-/worker-loader-3.0.8.tgz#5fc5cda4a3d3163d9c274a4e3a811ce8b60dbb37"
+  integrity sha512-XQyQkIFeRVC7f7uRhFdNMe/iJOdO6zxAaR3EWbDp45v3mDhrTi+++oswKNxShUNjPC/1xUp5DB29YKLhFo129g==
+  dependencies:
+    loader-utils "^2.0.0"
+    schema-utils "^3.0.0"
+
 wrap-ansi@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"