deleteAllUser.ts

import admin from 'firebase-admin'

const credential: any = null // 書き換えてね

const app = admin.initializeApp({
  credential: admin.credential.cert(credential),
})

const splitByCount = (n: number, arr: admin.auth.UserRecord[]) => {
  return arr.reduce((before: admin.auth.UserRecord[][], now: admin.auth.UserRecord) => {
    if (Array.isArray(before[before.length - 1]) && before[before.length - 1].length === n) {
      return [
        ...before,
        [
          now
        ]
      ]
    } else {
      return [
        ...(before.filter((l, i) => (i !== before.length - 1))),
        [
          ...(before[before.length - 1] || []),
          now
        ]
      ]
    }
  }, [] as admin.auth.UserRecord[][])
}

const delay = (ms: number) => {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve()
    }, ms)
  })
}

// Delete
async function runDeleteAllUsers() {
  const auth = app.auth() // cache
  const {users} = await auth.listUsers(1000)

  console.log('max users: ' + users.length)

  const splitUsers = splitByCount(60, users)
  let i = 0;

  for (const users of splitUsers) {
    i++;
    console.log(`Set: ${i}`)
    await Promise.all(users.map(async (user) => {
      await auth.deleteUser(user.uid)
    }))
    console.log('---------------')
    console.log(' wait ')
    await delay(3000)
    console.log('---------------')
  }
  console.log('Done')
  process.exit(0)
}

runDeleteAllUsers()