Node.js NodeJs 过滤掉目录异步

我只想过滤掉给定路径中的目录.但是在异步模式下.

|-database
    |- more files...
|-events-list
    |- more files...
|-year-summary
    |- more files...
|-year-summary.xlsx

前三项是子目录.

#!/usr/bin/env node
const fs = require('fs')
const path = require('path')
const dir = 'C:\\Users\\xxx\\Development\\mbes32-events\\src\\reports'

function testSync() {
    let items = fs.readdirSync(dir)
    let dirs = items.filter(function (item) {
        let temp = fs.statSync(path.resolve(dir, item))
        return temp.isDirectory()
    })
    console.log({ dirs })
}

testSync()

result: { dirs: ['database', 'events-list', 'year-summary'] }

async function testAsync() {
    let items = await fs.promises.readdir(dir)
    let dirs = items.filter(async function (item) {
        let temp = await fs.promises.stat(path.resolve(dir, item))
        return temp.isDirectory()
    })
    console.log({ dirs })
}

testAsync()

result: { dirs: ['database', 'events-list', 'year-summary', 'year-summary.xlsx'] }

snyc功能按预期工作.但是async函数总是返回起始路径中的每一项.

我已经用了几个月了.但是今天我的程序因为这个失败而崩溃了.

提前感谢.:)