message: chore: type fix
diff: // @ts-nocheck
  -const Stream = require('stream')
  -const PassThrough = Stream.PassThrough
  +import { Readable, PassThrough } from 'stream'
  +
  const slice = Array.prototype.slice
  -class StringToStream extends Stream.Readable {
  +class StringToStream extends Readable {
  constructor (str: string) {
  super()
  this._str = str
  @@ -21,7 +21,7 @@ class StringToStream extends Stream.Readable {
  }
  }
  -function mergeStream2 () {
  +function mergeStream2 (...arg: any[]): Readable {
  const streamsQueue = []
  const args = slice.call(arguments)
  let merging = false
  