feat: base config & validate withdawal & health check

example.env

@@ -7,6 +7,7 @@ PORT=8000
 
 #commision for service
 SERVICE_FEE=0.05
+REWARD_ADDRESS=
 
 # bull settings
 REDIS_URL=redis://127.0.0.1:6379

package.json

@@ -39,8 +39,7 @@
     "rimraf": "^3.0.2",
     "rxjs": "^7.2.0",
     "tx-manager": "^0.3.1",
-    "uuid": "^8.3.2",
+    "uuid": "^8.3.2"
-    "web3-utils": "^1.4.0"
   },
   "devDependencies": {
     "@nestjs/cli": "^8.0.0",

src/config/configuration.ts

@@ -1,6 +1,16 @@
+import { Wallet } from 'ethers';
+
+import { version } from '../../package.json';
+
 export const baseConfig = () => ({
-  gasLimit: 600000,
+  base: {
-  serviceFee: process.env.SERVICE_FEE,
+    version,
-  chainId: process.env.CHAIN_ID,
+    gasLimit: 600000,
-  port: parseInt(process.env.PORT, 10) || 8080,
+    minimumBalance: 0.5,
+    chainId: process.env.CHAIN_ID,
+    serviceFee: process.env.SERVICE_FEE,
+    rewardAddress: process.env.REWARD_ADDRESS,
+    port: parseInt(process.env.PORT, 10) || 8080,
+    address: new Wallet(process.env.PRIVATE_KEY).address,
+  },
 });

src/main.ts

@@ -9,10 +9,10 @@ async function bootstrap() {
     const app = await NestFactory.create<NestExpressApplication>(AppModule, { cors: true });
 
     const configService = app.get(ConfigService);
-    await app.listen(configService.get('port'));
+    await app.listen(configService.get('base.port'));
   } catch (err) {
-    console.log('err', err.message)
+    console.log('err', err.message);
   }
 }
 
-bootstrap()
+bootstrap();

src/modules/api/api.controller.ts

@@ -1,30 +1,42 @@
-import { Controller, Body, Param, Get, Post } from '@nestjs/common';
+import { Controller, Body, Param, Res, Get, Post, HttpStatus } from '@nestjs/common';
-import { Job } from 'bull';
+import { Response } from 'express';
 
 import { ApiService } from './api.service';
+import { validateWithdrawRequest } from './api.validator';
 
 @Controller()
 export class ApiController {
   constructor(private readonly service: ApiService) {}
 
-  @Get('/api')
+  @Get('/status')
-  async status(): Promise<Health> {
+  async status(): Promise<Status> {
     return await this.service.status();
   }
 
   @Get('/')
-  async main(): Promise<string> {
+  async root(): Promise<string> {
-    return this.service.main();
+    return this.service.root();
   }
 
   @Get('/job/:jobId')
-  async getJob(@Param('jobId') jobId: string): Promise<Job> {
+  async getJob(@Res() res: Response, @Param('jobId') jobId: string) {
-    return await this.service.getJob(jobId);
+    const job = await this.service.getJob(jobId);
+
+    if (!job) {
+      return res.status(HttpStatus.BAD_REQUEST).json({ error: "The job doesn't exist" });
+    }
+
+    return job;
   }
 
   @Post('/withdrawal')
-  async withdrawal(_, @Body() { body }: any): Promise<string> {
+  async withdrawal(@Res() res: Response, @Body() { body }: any) {
-    console.log('body', body);
+    const inputError = validateWithdrawRequest(body);
+
+    if (inputError) {
+      console.log('Invalid input:', inputError);
+      return res.status(HttpStatus.BAD_REQUEST).json({ error: inputError });
+    }
 
     return await this.service.withdrawal(JSON.parse(body));
   }

src/modules/api/api.module.ts

@@ -5,10 +5,11 @@ import { ApiService } from './api.service';
 import { ApiController } from './api.controller';
 
 import { QueueModule } from '@/modules';
+import { ProviderService } from '@/services';
 
 @Module({
   imports: [ConfigModule, QueueModule],
-  providers: [ApiService],
+  providers: [ApiService, ProviderService],
   controllers: [ApiController],
   exports: [],
 })

src/modules/api/api.service.ts

@@ -2,18 +2,32 @@ import { Queue, Job } from 'bull';
 import { InjectQueue } from '@nestjs/bull';
 import { Injectable } from '@nestjs/common';
 
+import { ProviderService } from '@/services';
+import { ConfigService } from '@nestjs/config';
+
 @Injectable()
 class ApiService {
-  constructor(@InjectQueue('withdrawal') private withdrawalQueue: Queue) {}
+  constructor(
+    private configService: ConfigService,
+    private providerService: ProviderService,
+    @InjectQueue('withdrawal') private withdrawalQueue: Queue,
+  ) {}
+
+  async status(): Promise<Status> {
+    const { rewardAddress, version, chainId, serviceFee } = this.configService.get('base');
+
+    const health = await this.healthCheck();
 
-  async status(): Promise<Health> {
     return {
-      status: '',
+      health,
-      error: false,
+      chainId,
+      version,
+      serviceFee,
+      rewardAddress,
     };
   }
 
-  main(): string {
+  root(): string {
     return `This is <a href=https://tornado.cash>tornado.cash</a> Relayer service. Check the <a href=/status>/status</a> for settings`;
   }
 
@@ -23,9 +37,20 @@ class ApiService {
     return String(job.id);
   }
 
-  async getJob(id: string): Promise<Job> {
+  async getJob(id: string): Promise<Job | null> {
     return await this.withdrawalQueue.getJob(id);
   }
+
+  private async healthCheck(): Promise<Health> {
+    const status = await this.providerService.checkSenderBalance();
+
+    const minimumBalance = this.configService.get('base.minimumBalance');
+
+    return {
+      status,
+      error: status ? '' : `Not enough balance, less than ${minimumBalance} ETH`,
+    };
+  }
 }
 
 export { ApiService };

src/modules/api/api.validator.ts

@@ -1,5 +1,5 @@
 import Ajv, { ValidateFunction } from 'ajv';
-import { isAddress, toChecksumAddress } from '@/utilities';
+import { isAddress } from '@/utilities';
 
 const ajv = new Ajv();
 
@@ -11,69 +11,44 @@ ajv.addKeyword({
   errors: true,
 });
 
-ajv.addKeyword({
-  keyword: 'isKnownContract',
-  validate: (schema: any, address: string) => {
-    try {
-      return address !== null;
-    } catch (e) {
-      return false;
-    }
-  },
-  errors: true,
-});
-
-ajv.addKeyword({
-  keyword: 'isFeeRecipient',
-  validate: (schema: any, address: string) => {
-    try {
-      return toChecksumAddress('') === toChecksumAddress(address);
-    } catch (e) {
-      return false;
-    }
-  },
-  errors: true,
-});
-
 const addressType = {
   type: 'string',
   pattern: '^0x[a-fA-F0-9]{40}$',
   isAddress: true,
 };
+
 const proofType = { type: 'string', pattern: '^0x[a-fA-F0-9]{512}$' };
 const bytes32Type = { type: 'string', pattern: '^0x[a-fA-F0-9]{64}$' };
-const instanceType = { ...addressType, isKnownContract: true };
+const arrayType = { type: 'array', pattern: '^0x[a-fA-F0-9]{64}$' };
-const relayerType = { ...addressType, isFeeRecipient: true };
 
-const tornadoWithdrawSchema = {
+const recipientType = {
+  type: 'object',
+  properties: {
+    recipient: addressType,
+    relayer: addressType,
+    encryptedOutput1: bytes32Type,
+    encryptedOutput2: bytes32Type,
+  },
+};
+
+const withdrawSchema = {
   type: 'object',
   properties: {
     proof: proofType,
-    contract: instanceType,
     args: {
       type: 'array',
-      maxItems: 6,
+      maxItems: 9,
-      minItems: 6,
+      minItems: 9,
-      items: [
+      items: [bytes32Type, bytes32Type, arrayType, bytes32Type, bytes32Type, bytes32Type, bytes32Type, recipientType, bytes32Type],
-        bytes32Type,
-        bytes32Type,
-        addressType,
-        relayerType,
-        bytes32Type,
-        bytes32Type,
-      ],
     },
   },
   additionalProperties: false,
-  required: ['proof', 'contract', 'args'],
+  required: ['proof', 'args'],
 };
 
-const validateTornadoWithdraw = ajv.compile(tornadoWithdrawSchema);
+const validateTornadoWithdraw = ajv.compile(withdrawSchema);
 
-function getInputError(
+function getInputError(validator: ValidateFunction, data: typeof withdrawSchema) {
-  validator: ValidateFunction,
-  data: typeof tornadoWithdrawSchema,
-) {
   validator(data);
   if (validator.errors) {
     const [error] = validator.errors;
@@ -82,7 +57,7 @@ function getInputError(
   return null;
 }
 
-function validateWithdrawRequest(data: typeof tornadoWithdrawSchema) {
+function validateWithdrawRequest(data: typeof withdrawSchema) {
   return getInputError(validateTornadoWithdraw, data);
 }
 

src/modules/api/types/index.ts

@@ -1,4 +1,12 @@
 type Health = {
-  status: string;
+  status: boolean;
-  error: boolean;
+  error: string;
+};
+
+type Status = {
+  health: Health;
+  rewardAddress: string;
+  version: string;
+  serviceFee: number;
+  chainId: number;
 };

src/modules/queue/withdrawal.processor.ts

@@ -91,14 +91,14 @@ export class WithdrawalProcessor extends BaseProcessor<Withdrawal> {
   }
 
   async prepareTransaction({ proof, args }) {
-    const chainId = this.configService.get<number>('chainId');
+    const chainId = this.configService.get('base.chainId');
 
     const contract = this.providerService.getTornadoPool();
 
     // @ts-ignore
     const data = contract.interface.encodeFunctionData('transaction', [proof, ...args]);
 
-    let gasLimit = this.configService.get<BigNumber>('gasLimit');
+    let gasLimit = this.configService.get<BigNumber>('base.gasLimit');
 
     // need because optimism has dynamic gas limit
     if (chainId === ChainId.OPTIMISM) {
@@ -122,7 +122,7 @@ export class WithdrawalProcessor extends BaseProcessor<Withdrawal> {
   }
 
   async checkFee({ fee, amount }) {
-    const { gasLimit, serviceFee } = this.configService.get('');
+    const { gasLimit, serviceFee } = this.configService.get('base');
 
     const { fast } = await this.gasPriceService.getGasPrice();
 

src/services/oracle.service.ts

@@ -13,7 +13,7 @@ export class GasPriceService {
   private readonly chainId: number;
 
   constructor(private configService: ConfigService) {
-    this.chainId = this.configService.get<number>('chainId');
+    this.chainId = this.configService.get<number>('base.chainId');
   }
 
   async getGasPrice(): Promise<GasPrice> {

src/services/provider.service.ts

@@ -8,13 +8,11 @@ import { TornadoPool__factory as TornadoPoolFactory } from '@/artifacts';
 @Injectable()
 export class ProviderService {
   private readonly chainId: number;
+  public provider: ethers.providers.JsonRpcProvider;
 
   constructor(private configService: ConfigService) {
-    this.chainId = this.configService.get<number>('chainId');
+    this.chainId = this.configService.get<number>('base.chainId');
-  }
+    this.provider = new ethers.providers.JsonRpcProvider(RPC_LIST[this.chainId]);
-
-  getProvider() {
-    return new ethers.providers.JsonRpcProvider(RPC_LIST[this.chainId]);
   }
 
   getProviderWithSigner() {
@@ -24,4 +22,18 @@ export class ProviderService {
   getTornadoPool() {
     return TornadoPoolFactory.connect(CONTRACT_NETWORKS[this.chainId], this.getProviderWithSigner());
   }
+
+  async checkSenderBalance() {
+    try {
+      const balance = await this.getBalance(this.configService.get<string>('base.address'));
+
+      return balance.gt(ethers.utils.parseEther(this.configService.get('base.minimumBalance')));
+    } catch {
+      return false;
+    }
+  }
+
+  async getBalance(address: string) {
+    return await this.provider.getBalance(address);
+  }
 }

src/utilities/crypto.ts

@@ -1,23 +1,13 @@
 import { BigNumber, utils, BigNumberish } from 'ethers';
-import {
-  toChecksumAddress as checksumAddress,
-  isAddress as checkAddress,
-} from 'web3-utils';
 
 import { numbers } from '@/constants';
 
-// eslint-disable-next-line
+export function isAddress(value: string): boolean {
-export function isAddress(value: any): boolean {
+  return utils.isAddress(value);
-  try {
-    return checkAddress(value);
-  } catch {
-    return false;
-  }
 }
 
-// eslint-disable-next-line
+export function toChecksumAddress(value: string): string {
-export function toChecksumAddress(value: any): string {
+  return utils.getAddress(value);
-  return checksumAddress(value);
 }
 
 export function toWei(value: string, uintName = 'wei') {

yarn.lock

@@ -1887,12 +1887,7 @@ bl@^4.1.0:
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     readable-stream "^3.4.0"
 
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     "@ethersproject/wordlists" "5.4.0"
 
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@@ -3604,11 +3540,6 @@ is-glob@^4.0.0, is-glob@^4.0.1, is-glob@~4.0.1:
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-  version "1.0.1"
-  resolved "https://registry.npmjs.org/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
-  integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
-
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-  version "2.19.0"
-  resolved "https://registry.npmjs.org/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
-  integrity sha1-e9KC4/WELtKVu3SM3Z8f+iyCRoU=
-  dependencies:
-    dom-walk "^0.1.0"
-
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -4638,14 +4557,6 @@ npm-run-path@^4.0.0, npm-run-path@^4.0.1:
   dependencies:
     path-key "^3.0.0"
 
-number-to-bn@1.7.0:
-  version "1.7.0"
-  resolved "https://registry.npmjs.org/number-to-bn/-/number-to-bn-1.7.0.tgz#bb3623592f7e5f9e0030b1977bd41a0c53fe1ea0"
-  integrity sha1-uzYjWS9+X54AMLGXe9QaDFP+HqA=
-  dependencies:
-    bn.js "4.11.6"
-    strip-hex-prefix "1.0.0"
-
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   version "2.2.0"
   resolved "https://registry.npmjs.org/nwsapi/-/nwsapi-2.2.0.tgz#204879a9e3d068ff2a55139c2c772780681a38b7"
@@ -4838,11 +4749,6 @@ parent-module@^1.0.0:
   dependencies:
     callsites "^3.0.0"
 
-parse-headers@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.npmjs.org/parse-headers/-/parse-headers-2.0.3.tgz#5e8e7512383d140ba02f0c7aa9f49b4399c92515"
-  integrity sha512-QhhZ+DCCit2Coi2vmAKbq5RGTRcQUOE2+REgv8vdyu7MnYx2eZztegqtTx99TZ86GTIwqiy3+4nQTWZ2tgmdCA==
-
 parse-json@^5.0.0:
   version "5.2.0"
   resolved "https://registry.npmjs.org/parse-json/-/parse-json-5.2.0.tgz#c76fc66dee54231c962b22bcc8a72cf2f99753cd"
@@ -4969,11 +4875,6 @@ process-nextick-args@~2.0.0:
   resolved "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
   integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
 
-process@^0.11.10:
-  version "0.11.10"
-  resolved "https://registry.npmjs.org/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
-  integrity sha1-czIwDoQBYb2j5podHZGn1LwW8YI=
-
 progress@^2.0.0:
   version "2.0.3"
   resolved "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
@@ -5034,15 +4935,6 @@ qs@^6.9.4:
   dependencies:
     side-channel "^1.0.4"
 
-query-string@^5.0.1:
-  version "5.1.1"
-  resolved "https://registry.npmjs.org/query-string/-/query-string-5.1.1.tgz#a78c012b71c17e05f2e3fa2319dd330682efb3cb"
-  integrity sha512-gjWOsm2SoGlgLEdAGt7a6slVOk9mGiXmPFMqrEhLQ68rhQuBnpfs3+EmlvqKyxnCo9/PPlF+9MtY02S1aFg+Jw==
-  dependencies:
-    decode-uri-component "^0.2.0"
-    object-assign "^4.1.0"
-    strict-uri-encode "^1.0.0"
-
 queue-microtask@^1.2.2:
   version "1.2.3"
   resolved "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz#4929228bbc724dfac43e0efb058caf7b6cfb6243"
@@ -5372,20 +5264,6 @@ signal-exit@^3.0.2, signal-exit@^3.0.3:
   resolved "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
   integrity sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==
 
-simple-concat@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.1.tgz#f46976082ba35c2263f1c8ab5edfe26c41c9552f"
-  integrity sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==
-
-simple-get@^2.7.0:
-  version "2.8.1"
-  resolved "https://registry.npmjs.org/simple-get/-/simple-get-2.8.1.tgz#0e22e91d4575d87620620bc91308d57a77f44b5d"
-  integrity sha512-lSSHRSw3mQNUGPAYRqo7xy9dhKmxFXIjLjp4KHpf99GEH2VH7C3AM+Qfx6du6jhfUi6Vm7XnbEVEf7Wb6N8jRw==
-  dependencies:
-    decompress-response "^3.3.0"
-    once "^1.3.1"
-    simple-concat "^1.0.0"
-
 sisteransi@^1.0.5:
   version "1.0.5"
   resolved "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.5.tgz#134d681297756437cc05ca01370d3a7a571075ed"
@@ -5465,11 +5343,6 @@ streamsearch@0.1.2:
   resolved "https://registry.npmjs.org/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
   integrity sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo=
 
-strict-uri-encode@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
-  integrity sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=
-
 string-length@^4.0.1:
   version "4.0.2"
   resolved "https://registry.npmjs.org/string-length/-/string-length-4.0.2.tgz#a8a8dc7bd5c1a82b9b3c8b87e125f66871b6e57a"
@@ -5559,13 +5432,6 @@ strip-final-newline@^2.0.0:
   resolved "https://registry.npmjs.org/strip-final-newline/-/strip-final-newline-2.0.0.tgz#89b852fb2fcbe936f6f4b3187afb0a12c1ab58ad"
   integrity sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==
 
-strip-hex-prefix@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.npmjs.org/strip-hex-prefix/-/strip-hex-prefix-1.0.0.tgz#0c5f155fef1151373377de9dbb588da05500e36f"
-  integrity sha1-DF8VX+8RUTczd96du1iNoFUA428=
-  dependencies:
-    is-hex-prefixed "1.0.0"
-
 strip-json-comments@^3.1.0, strip-json-comments@^3.1.1:
   version "3.1.1"
   resolved "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz#31f1281b3832630434831c310c01cccda8cbe006"
@@ -5718,11 +5584,6 @@ through@^2.3.6:
   resolved "https://registry.npmjs.org/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
   integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
 
-timed-out@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.npmjs.org/timed-out/-/timed-out-4.0.1.tgz#f32eacac5a175bea25d7fab565ab3ed8741ef56f"
-  integrity sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=
-
 tmp@^0.0.33:
   version "0.0.33"
   resolved "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
@@ -5967,11 +5828,6 @@ unbox-primitive@^1.0.1:
     has-symbols "^1.0.2"
     which-boxed-primitive "^1.0.2"
 
-underscore@1.12.1:
-  version "1.12.1"
-  resolved "https://registry.npmjs.org/underscore/-/underscore-1.12.1.tgz#7bb8cc9b3d397e201cf8553336d262544ead829e"
-  integrity sha512-hEQt0+ZLDVUMhebKxL4x1BTtDY7bavVofhZ9KZ4aI26X9SRaE+Y3m83XUL1UP2jn8ynjndwCCpEHdUG+9pP1Tw==
-
 universalify@^0.1.0, universalify@^0.1.2:
   version "0.1.2"
   resolved "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
@@ -5994,16 +5850,6 @@ uri-js@^4.2.2:
   dependencies:
     punycode "^2.1.0"
 
-url-set-query@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.npmjs.org/url-set-query/-/url-set-query-1.0.0.tgz#016e8cfd7c20ee05cafe7795e892bd0702faa339"
-  integrity sha1-AW6M/Xwg7gXK/neV6JK9BwL6ozk=
-
-utf8@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.npmjs.org/utf8/-/utf8-3.0.0.tgz#f052eed1364d696e769ef058b183df88c87f69d1"
-  integrity sha512-E8VjFIQ/TyQgp+TZfS6l8yp/xWppSAHzidGiRrqe4bK4XP9pTRyKFgGJpO3SN7zdX4DeomTrwaseCHovfpFcqQ==
-
 util-deprecate@^1.0.1, util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
@@ -6097,20 +5943,6 @@ web3-core-promievent@^1.3.0:
   dependencies:
     eventemitter3 "4.0.4"
 
-web3-utils@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.npmjs.org/web3-utils/-/web3-utils-1.4.0.tgz#e8cb381c81b242dc1d4ecb397200356d404410e6"
-  integrity sha512-b8mEhwh/J928Xk+SQFjtqrR2EGPhpknWLcIt9aCpVPVRXiqjUGo/kpOHKz0azu9c6/onEJ9tWXZt0cVjmH0N5Q==
-  dependencies:
-    bn.js "^4.11.9"
-    eth-lib "0.2.8"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.12.1"
-    utf8 "3.0.0"
-
 webidl-conversions@^5.0.0:
   version "5.0.0"
   resolved "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-5.0.0.tgz#ae59c8a00b121543a2acc65c0434f57b0fc11aff"
@@ -6248,36 +6080,6 @@ ws@^7.4.5:
   resolved "https://registry.npmjs.org/ws/-/ws-7.5.2.tgz#09cc8fea3bec1bc5ed44ef51b42f945be36900f6"
   integrity sha512-lkF7AWRicoB9mAgjeKbGqVUekLnSNO4VjKVnuPHpQeOxZOErX6BPXwJk70nFslRCEEA8EVW7ZjKwXaP9N+1sKQ==
 
-xhr-request-promise@^0.1.2:
-  version "0.1.3"
-  resolved "https://registry.npmjs.org/xhr-request-promise/-/xhr-request-promise-0.1.3.tgz#2d5f4b16d8c6c893be97f1a62b0ed4cf3ca5f96c"
-  integrity sha512-YUBytBsuwgitWtdRzXDDkWAXzhdGB8bYm0sSzMPZT7Z2MBjMSTHFsyCT1yCRATY+XC69DUrQraRAEgcoCRaIPg==
-  dependencies:
-    xhr-request "^1.1.0"
-
-xhr-request@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.npmjs.org/xhr-request/-/xhr-request-1.1.0.tgz#f4a7c1868b9f198723444d82dcae317643f2e2ed"
-  integrity sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==
-  dependencies:
-    buffer-to-arraybuffer "^0.0.5"
-    object-assign "^4.1.1"
-    query-string "^5.0.1"
-    simple-get "^2.7.0"
-    timed-out "^4.0.1"
-    url-set-query "^1.0.0"
-    xhr "^2.0.4"
-
-xhr@^2.0.4:
-  version "2.6.0"
-  resolved "https://registry.npmjs.org/xhr/-/xhr-2.6.0.tgz#b69d4395e792b4173d6b7df077f0fc5e4e2b249d"
-  integrity sha512-/eCGLb5rxjx5e3mF1A7s+pLlR6CGyqWN91fv1JgER5mVWg1MZmlhBvy9kjcsOdRk8RrIujotWyJamfyrp+WIcA==
-  dependencies:
-    global "~4.4.0"
-    is-function "^1.0.1"
-    parse-headers "^2.0.0"
-    xtend "^4.0.0"
-
 xml-name-validator@^3.0.0:
   version "3.0.0"
   resolved "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"