-import { type PoolType, PoolTypes } from '../pool'
-import { type ClusterPoolOptions, FixedClusterPool } from './fixed'
+import { type Worker } from 'node:cluster'
+import { type PoolOptions, type PoolType, PoolTypes } from '../pool'
+import { checkDynamicPoolSize } from '../utils'
+import { FixedClusterPool } from './fixed'