message: Import type-extensions in Hardhat plugin index
diff: import fsExtra from 'fs-extra'
  import { TASK_CLEAN, TASK_COMPILE, TASK_COMPILE_SOLIDITY_COMPILE_JOBS } from 'hardhat/builtin-tasks/task-names'
  import { extendConfig, task, subtask } from 'hardhat/config'
  -import { HardhatPluginError } from 'hardhat/plugins'
  import { getFullyQualifiedName } from 'hardhat/utils/contract-names'
  import _, { uniq } from 'lodash'
  import { runTypeChain, glob } from 'typechain'
  import { getDefaultTypechainConfig } from './config'
  import { TASK_TYPECHAIN } from './constants'
  +import './type-extensions';
  const taskArgsStore: { noTypechain: boolean; fullRebuild: boolean } = { noTypechain: false, fullRebuild: false }
  