-import { type PoolType, PoolTypes } from '../pool'
-import { FixedThreadPool, type ThreadPoolOptions } from './fixed'
+import { type Worker } from 'node:worker_threads'
+import { type PoolOptions, type PoolType, PoolTypes } from '../pool'
+import { checkDynamicPoolSize } from '../utils'
+import { FixedThreadPool } from './fixed'