-import { restore } from 'sinon'
-import { FixedThreadPool } from '../../../lib/index.js'
-import { WeightedRoundRobinWorkerChoiceStrategy } from '../../../lib/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.js'
-import { generateRandomInteger } from '../../test-utils.js'
+import { FixedThreadPool } from '../../../lib/index.cjs'
+import { WeightedRoundRobinWorkerChoiceStrategy } from '../../../lib/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.cjs'