feat: VITEST_POOL_ID cannot be the same between different running specs

packages/vitest/package.json

@@ -88,7 +88,7 @@
     "chai": "^4.3.6",
     "debug": "^4.3.4",
     "local-pkg": "^0.4.1",
-    "tinypool": "^0.1.3",
+    "tinypool": "^0.2.1",
     "tinyspy": "^0.3.3",
     "vite": "^2.9.12"
   },

packages/vitest/src/node/pool.ts

@@ -76,7 +76,6 @@ export function createPool(ctx: Vitest): WorkerPool {
         files,
         invalidates,
         workerId,
-        poolId: !ctx.config.threads ? 1 : ((workerId - 1) % maxThreads) + 1,
       }
       try {
         await pool.run(data, { transferList: [workerPort], name })

packages/vitest/src/runtime/worker.ts

@@ -1,5 +1,6 @@
 import { resolve } from 'pathe'
 import { createBirpc } from 'birpc'
+import { workerId as poolId } from 'tinypool'
 import { ModuleCacheMap } from 'vite-node/client'
 import type { ResolvedConfig, WorkerContext, WorkerRPC } from '../types'
 import { distDir } from '../constants'
@@ -63,7 +64,7 @@ function init(ctx: WorkerContext) {
   if (typeof __vitest_worker__ !== 'undefined' && ctx.config.threads && ctx.config.isolate)
     throw new Error(`worker for ${ctx.files.join(',')} already initialized by ${getWorkerState().ctx.files.join(',')}. This is probably an internal bug of Vitest.`)
 
-  const { config, port, workerId, poolId } = ctx
+  const { config, port, workerId } = ctx
 
   process.env.VITEST_WORKER_ID = String(workerId)
   process.env.VITEST_POOL_ID = String(poolId)

packages/vitest/src/types/worker.ts

@@ -9,7 +9,6 @@ import type { UserConsoleLog } from './general'
 
 export interface WorkerContext {
   workerId: number
-  poolId: number
   port: MessagePort
   config: ResolvedConfig
   files: string[]