Remove unused variables

packages/hardhat-core/src/internal/core/config/config-validation.ts

@@ -76,8 +76,6 @@ function optional<TypeT, OutputT>(
 
 const HEX_STRING_REGEX = /^(0x)?([0-9a-f]{2})+$/gi;
 
-const HEX_PREFIX = "0x";
-
 function isHexString(v: unknown): v is string {
   if (typeof v !== "string") {
     return false;

packages/hardhat-core/src/internal/core/providers/accounts.ts

@@ -22,8 +22,6 @@ export interface JsonRpcTransactionData {
   nonce?: string | number;
 }
 
-const HD_PATH_REGEX = /^m(:?\/\d+'?)+\/?$/;
-
 export class LocalAccountsProvider extends ProviderWrapperWithChainId {
   private _addressToPrivateKey: Map<string, Buffer> = new Map();
 

packages/hardhat-core/src/internal/core/runtime-environment.ts

@@ -8,7 +8,6 @@ import {
   HardhatConfig,
   HardhatRuntimeEnvironment,
   Network,
-  NetworkConfig,
   ParamDefinition,
   RunSuperFunction,
   RunTaskFunction,
@@ -298,7 +297,7 @@ export class Environment implements HardhatRuntimeEnvironment {
     paramDefinition: ParamDefinition<any>,
     argumentValue: any
   ) {
-    const { name, isOptional, defaultValue, type } = paramDefinition;
+    const { name, isOptional, defaultValue } = paramDefinition;
 
     if (argumentValue === undefined) {
       if (isOptional) {

packages/hardhat-core/src/internal/hardhat-network/jsonrpc/client.ts

@@ -6,7 +6,7 @@ import path from "path";
 import { HttpProvider } from "../../core/providers/http";
 import { createNonCryptographicHashBasedIdentifier } from "../../util/hash";
 import { rpcData, rpcQuantity } from "../provider/input";
-import { bufferToRpcData, numberToRpcQuantity } from "../provider/output";
+import { numberToRpcQuantity } from "../provider/output";
 
 import {
   decode,

packages/hardhat-core/src/internal/hardhat-network/provider/HardhatBlockchain.ts

@@ -1,6 +1,6 @@
 import { Block } from "@ethereumjs/block";
 import { TypedTransaction } from "@ethereumjs/tx";
-import { BN, bufferToInt, zeros } from "ethereumjs-util";
+import { BN, zeros } from "ethereumjs-util";
 
 import { BlockchainData } from "./BlockchainData";
 import { FilterParams } from "./node-types";

packages/hardhat-core/src/internal/hardhat-network/provider/TxPriorityHeap.ts

@@ -1,5 +1,5 @@
 import { Transaction } from "@ethereumjs/tx";
-import { BN, bufferToHex } from "ethereumjs-util";
+import { BN } from "ethereumjs-util";
 import { MaxHeap } from "mnemonist/heap";
 
 import { OrderedTransaction } from "./PoolState";

packages/hardhat-core/src/internal/hardhat-network/provider/fork/ForkBlockchain.ts

@@ -1,7 +1,7 @@
 import { Block } from "@ethereumjs/block";
 import Common from "@ethereumjs/common";
 import { TypedTransaction } from "@ethereumjs/tx";
-import { Address, BN, bufferToHex, bufferToInt } from "ethereumjs-util";
+import { Address, BN, bufferToHex } from "ethereumjs-util";
 
 import { JsonRpcClient } from "../../jsonrpc/client";
 import {

packages/hardhat-core/src/internal/hardhat-network/provider/fork/ForkStateManager.ts

@@ -10,7 +10,6 @@ import {
   unpadBuffer,
 } from "ethereumjs-util";
 import { Map as ImmutableMap, Record as ImmutableRecord } from "immutable";
-import { callbackify } from "util";
 
 import { assertHardhatInvariant } from "../../../core/errors";
 import { JsonRpcClient } from "../../jsonrpc/client";
@@ -24,10 +23,6 @@ import { randomHash } from "./random";
 
 type State = ImmutableMap<string, ImmutableRecord<AccountState>>;
 
-const encodeStorageKey = (address: Buffer, position: Buffer): string => {
-  return `${address.toString("hex")}${unpadBuffer(position).toString("hex")}`;
-};
-
 const checkpointedError = (method: string) =>
   new Error(`${method} called when checkpointed`);
 

packages/hardhat-core/src/internal/hardhat-network/provider/fork/ForkTransaction.ts

@@ -1,16 +1,5 @@
 import { Transaction, TxData, TxOptions } from "@ethereumjs/tx";
-import {
-  Address,
-  BN,
-  BufferLike,
-  bufferToInt,
-  ecrecover,
-  PrefixedHexString,
-  publicToAddress,
-  rlphash,
-  toBuffer,
-  unpadBuffer,
-} from "ethereumjs-util";
+import { Address, BN } from "ethereumjs-util";
 
 import { InternalError } from "../errors";
 

packages/hardhat-core/src/internal/hardhat-network/provider/modules/evm.ts

@@ -1,4 +1,4 @@
-import { BN, bufferToInt } from "ethereumjs-util";
+import { BN } from "ethereumjs-util";
 import * as t from "io-ts";
 
 import { BoundExperimentalHardhatNetworkMessageTraceHook } from "../../../../types";

packages/hardhat-core/src/internal/hardhat-network/provider/modules/hardhat.ts

@@ -1,4 +1,4 @@
-import { BN, bufferToInt } from "ethereumjs-util";
+import { BN } from "ethereumjs-util";
 import * as t from "io-ts";
 
 import {

packages/hardhat-core/src/internal/hardhat-network/provider/node.ts

@@ -4,7 +4,7 @@ import { Transaction } from "@ethereumjs/tx";
 import VM from "@ethereumjs/vm";
 import Bloom from "@ethereumjs/vm/dist/bloom";
 import { EVMResult, ExecResult } from "@ethereumjs/vm/dist/evm/evm";
-import { ERROR, VmError } from "@ethereumjs/vm/dist/exceptions";
+import { ERROR } from "@ethereumjs/vm/dist/exceptions";
 import {
   PostByzantiumTxReceipt,
   PreByzantiumTxReceipt,
@@ -27,7 +27,6 @@ import {
 } from "ethereumjs-util";
 import EventEmitter from "events";
 import { BaseTrie as Trie } from "merkle-patricia-tree";
-import { promisify } from "util";
 
 import { CompilerInput, CompilerOutput } from "../../../types";
 import { HARDHAT_NETWORK_DEFAULT_GAS_PRICE } from "../../core/config/default-config";
@@ -1290,10 +1289,6 @@ export class HardhatNode extends EventEmitter {
       timestamp,
     };
 
-    const header = BlockHeader.fromHeaderData(headerData, {
-      common: this._vm._common,
-    });
-
     const block = Block.fromBlockData(
       {
         header: {

packages/hardhat-core/src/internal/hardhat-network/provider/provider.ts

@@ -14,7 +14,6 @@ import type {
   RequestArguments,
 } from "../../../types";
 import { HARDHAT_NETWORK_RESET_EVENT } from "../../constants";
-import { SolidityError } from "../stack-traces/solidity-errors";
 import { FIRST_SOLC_VERSION_SUPPORTED } from "../stack-traces/solidityTracer";
 import { Mutex } from "../vendor/await-semaphore";
 

packages/hardhat-core/src/internal/hardhat-network/provider/types/PBlockchain.ts

@@ -1,7 +1,6 @@
 import { Block } from "@ethereumjs/block";
 import { TypedTransaction } from "@ethereumjs/tx";
 import { BN } from "ethereumjs-util";
-import { callbackify } from "util";
 
 import { FilterParams } from "../node-types";
 import { RpcLogOutput, RpcReceiptOutput } from "../output";

packages/hardhat-core/src/internal/hardhat-network/provider/utils/fakeTransaction.ts

@@ -1,16 +1,5 @@
-import Common from "@ethereumjs/common";
 import { Transaction, TxData, TxOptions } from "@ethereumjs/tx";
-import {
-  Address,
-  AddressLike,
-  BN,
-  bufferToInt,
-  rlphash,
-  toBuffer,
-  unpadBuffer,
-} from "ethereumjs-util";
-
-import { TransactionParams } from "../node-types";
+import { Address, AddressLike, BN, toBuffer } from "ethereumjs-util";
 
 export interface FakeTxData extends TxData {
   from?: AddressLike;

packages/hardhat-core/src/internal/hardhat-network/provider/utils/makeForkClient.ts

@@ -6,7 +6,7 @@ import { HttpProvider } from "../../../core/providers/http";
 import { rpcQuantityToNumber } from "../../../core/providers/provider-utils";
 import { JsonRpcClient } from "../../jsonrpc/client";
 import { ForkConfig } from "../node-types";
-import { getRpcBlock, numberToRpcQuantity, RpcBlockOutput } from "../output";
+import { numberToRpcQuantity, RpcBlockOutput } from "../output";
 
 import {
   FALLBACK_MAX_REORG,

packages/hardhat-core/src/internal/hardhat-network/provider/utils/makeStateTrie.ts

@@ -1,6 +1,5 @@
 import { Account, BN } from "ethereumjs-util";
 import { SecureTrie as Trie } from "merkle-patricia-tree";
-import { promisify } from "util";
 
 import { GenesisAccount } from "../node-types";
 

packages/hardhat-core/src/internal/util/global-dir.ts

@@ -16,12 +16,6 @@ function generatePathsSync(packageName = "hardhat") {
   return envPaths(packageName);
 }
 
-async function getConfigDir(): Promise<string> {
-  const { config } = await generatePaths();
-  await fs.ensureDir(config);
-  return config;
-}
-
 function getConfigDirSync(): string {
   const { config } = generatePathsSync();
   fs.ensureDirSync(config);

packages/hardhat-core/test/internal/core/params/argumentTypes.ts

@@ -8,10 +8,6 @@ import * as types from "../../../../src/internal/core/params/argumentTypes";
 import { ArgumentType } from "../../../../src/types";
 import { expectHardhatError } from "../../../helpers/errors";
 
-function a(f: () => any) {
-  expectHardhatError(f, ERRORS.ARGUMENTS.INVALID_VALUE_FOR_TYPE);
-}
-
 describe("argumentTypes", () => {
   it("should set the right name to all the argument types", () => {
     for (const typeName of Object.keys(types)) {

packages/hardhat-core/test/internal/core/providers/construction.ts

@@ -1,4 +1,3 @@
-import Common from "@ethereumjs/common";
 import { assert } from "chai";
 
 import {
@@ -112,22 +111,11 @@ describe("Base providers wrapping", () => {
   });
 
   describe("Sender wrapping", () => {
-    let common: Common;
-
     beforeEach(async () => {
       mockedProvider.setReturnValue(
         "eth_estimateGas",
         numberToRpcQuantity(123)
       );
-
-      common = Common.forCustomChain(
-        "mainnet",
-        {
-          chainId: CHAIN_ID,
-          networkId: CHAIN_ID,
-        },
-        "petersburg"
-      );
     });
 
     it("Should wrap with a fixed sender param", async () => {

packages/hardhat-core/test/internal/core/providers/mocks.ts

@@ -1,10 +1,6 @@
 import { EventEmitter } from "events";
 
-import {
-  EIP1193Provider,
-  EthereumProvider,
-  RequestArguments,
-} from "../../../../src/types";
+import { EIP1193Provider, RequestArguments } from "../../../../src/types";
 
 export class MockedProvider extends EventEmitter implements EIP1193Provider {
   private _returnValues: any = {};

packages/hardhat-core/test/internal/hardhat-network/helpers/assertEqualTransactionMaps.ts

@@ -1,6 +1,5 @@
 import { Transaction } from "@ethereumjs/tx";
 import { assert } from "chai";
-import { bufferToHex } from "ethereumjs-util";
 
 import { randomAddress } from "../../../../src/internal/hardhat-network/provider/fork/random";
 import { OrderedTransaction } from "../../../../src/internal/hardhat-network/provider/PoolState";

packages/hardhat-core/test/internal/hardhat-network/helpers/blockchain.ts

@@ -1,6 +1,6 @@
 import Common from "@ethereumjs/common";
 import { Transaction, TxData } from "@ethereumjs/tx";
-import { Address, BN, bufferToHex } from "ethereumjs-util";
+import { BN, bufferToHex } from "ethereumjs-util";
 
 import { randomAddress } from "../../../../src/internal/hardhat-network/provider/fork/random";
 import {

packages/hardhat-core/test/internal/hardhat-network/helpers/makeOrderedTxMap.ts

@@ -1,5 +1,3 @@
-import { bufferToHex } from "ethereumjs-util";
-
 import { OrderedTransaction } from "../../../../src/internal/hardhat-network/provider/PoolState";
 
 export function makeOrderedTxMap(

packages/hardhat-core/test/internal/hardhat-network/provider/TxPool.ts

@@ -9,7 +9,6 @@ import {
   randomAddressBuffer,
 } from "../../../../src/internal/hardhat-network/provider/fork/random";
 import { TxPool } from "../../../../src/internal/hardhat-network/provider/TxPool";
-import { PStateManager } from "../../../../src/internal/hardhat-network/provider/types/PStateManager";
 import { txMapToArray } from "../../../../src/internal/hardhat-network/provider/utils/txMapToArray";
 import { assertEqualTransactionMaps } from "../helpers/assertEqualTransactionMaps";
 import {

packages/hardhat-core/test/internal/hardhat-network/provider/fork/ForkBlockchain.ts

@@ -1,14 +1,7 @@
 import { Block } from "@ethereumjs/block";
 import Common from "@ethereumjs/common";
 import { assert } from "chai";
-import {
-  Address,
-  BN,
-  BufferLike,
-  bufferToHex,
-  toBuffer,
-  zeros,
-} from "ethereumjs-util";
+import { BN, BufferLike, bufferToHex, toBuffer, zeros } from "ethereumjs-util";
 
 import { JsonRpcClient } from "../../../../../src/internal/hardhat-network/jsonrpc/client";
 import { ForkBlockchain } from "../../../../../src/internal/hardhat-network/provider/fork/ForkBlockchain";

packages/hardhat-core/test/internal/hardhat-network/provider/fork/ForkStateManager.ts

@@ -1,7 +1,6 @@
 import { assert } from "chai";
 import {
   Account,
-  Address,
   BN,
   bufferToHex,
   keccak256,
@@ -689,7 +688,6 @@ describe("ForkStateManager", () => {
           DAI_TOTAL_SUPPLY_STORAGE_POSITION,
           toBuffer("0xfeedface")
         );
-        const blockTwoStateRoot = await fsm.getStateRoot();
 
         fsm.setBlockContext(blockOneStateRoot, forkBlockNumber.addn(1));
         const fsmValue = await fsm.getContractStorage(

packages/hardhat-core/test/internal/hardhat-network/provider/modules/evm.ts

@@ -1,5 +1,5 @@
 import { assert } from "chai";
-import { BN, bufferToHex, zeroAddress } from "ethereumjs-util";
+import { BN, zeroAddress } from "ethereumjs-util";
 import sinon from "sinon";
 
 import {

packages/hardhat-core/test/internal/hardhat-network/provider/node.ts

@@ -1,14 +1,9 @@
 import { Block } from "@ethereumjs/block";
 import Common from "@ethereumjs/common";
 import { Transaction } from "@ethereumjs/tx";
-import VM from "@ethereumjs/vm";
-import {
-  AfterBlockEvent,
-  PostByzantiumTxReceipt,
-  RunBlockOpts,
-} from "@ethereumjs/vm/dist/runBlock";
+import { PostByzantiumTxReceipt } from "@ethereumjs/vm/dist/runBlock";
 import { assert } from "chai";
-import { BN, bufferToHex, bufferToInt } from "ethereumjs-util";
+import { BN, bufferToHex } from "ethereumjs-util";
 import path from "path";
 import sinon from "sinon";