personae/app/mutations/users/useDeleteUser.js

import { useOptimisticUpdate } from "pinia-colada-plugin-normalizer"

export const useDeleteUser = defineMutation(() => {
  const { transaction } = useOptimisticUpdate()

  const { mutate, ...mutation } = useMutation({
    onMutate: ({ id })  => {
      const tx = transaction()
      tx.remove("user", id)

      return tx
    },

    mutation: ({ id }) => useEmit("user:delete", id),

    onError: (error, _vars, { rollback }) => {
      rollback?.()

      console.error("[useDeleteUser] [onError]", error)
    },

    onSuccess: (_data, _vars, { commit }) => commit?.()
  })

  return {
    ...mutation,
    deleteUser: (id) => mutate({ id })
  }
})