下一个身份验证错误：“适配器”无法分配给类型“适配器|” 不明确的'

Question

我正在遵循此文档： https: //authjs.dev/reference/adapter/mongodb以使用 next-auth。这是相关代码：

import NextAuth from "next-auth"
import { MongoDBAdapter } from "@auth/mongodb-adapter"
import clientPromise from "../../../lib/mongodb"

...

export default NextAuth({
    providers,
    adapter: MongoDBAdapter(clientPromise),
})

我收到以下错误，这对我来说毫无意义：

Type 'Adapter' is not assignable to type 'Adapter | undefined'.
  Type 'Adapter' is not assignable to type 'DefaultAdapter & { createVerificationToken: (verificationToken: VerificationToken) => Awaitable<VerificationToken | null | undefined>; useVerificationToken: (params: { ...; }) => Awaitable<...>; }'.
    Type 'Adapter' is not assignable to type 'DefaultAdapter'.
      Types of property 'createUser' are incompatible.
        Type '((user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>) | undefined' is not assignable to type '(user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>'.
          Type 'undefined' is not assignable to type '(user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>'.ts(2322)
types.d.ts(106, 5): The expected type comes from property 'adapter' which is declared here on type 'AuthOptions'
(property) AuthOptions.adapter?: Adapter | undefined
You can use the adapter option to pass in your database adapter.

Required: No

Answer 1

我今天遇到了同样的问题。我从 @auth/mongodb-adapter 导入 MongoDBAdapter，但实际上需要从 next-auth 适配器导入。

我跑：

npm install @next-auth/mongodb-adapter

然后将我的导入更改为：

import { MongoDBAdapter } from "@next-auth/mongodb-adapter";

我不知道实际问题是什么，只是安装正确的适配器并更改导入为我修复了它。

希望这可以帮助！

Answer 2

我遇到了相同类型的错误@auth/firebase-adapter。

ype error: Type 'Adapter' is not assignable to type 'Adapter | undefined'.
  Type 'Adapter' is not assignable to type 'DefaultAdapter & { createVerificationToken: (verificationToken: VerificationToken) => Awaitable<VerificationToken | null | undefined>; useVerificationToken: (params: { ...; }) => Awaitable<...>; }'.
    Type 'Adapter' is not assignable to type 'DefaultAdapter'.
      Types of property 'createUser' are incompatible.
        Type '((user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>) | undefined' is not assignable to type '(user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>'.
          Type 'undefined' is not assignable to type '(user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>'

首先，Adapter从导入类型next-auth/adapters。

import type { Adapter } from "next-auth/adapters";

并更改 NextAuthOptions。

import type { Adapter } from "next-auth/adapters";

export const authOptions: NextAuthOptions = {,
  adapter: FirestoreAdapter(firestore) as Adapter,
  ...
};