前端 - 大佬们，请教个 prisma 的 ts 类型问题？

Question

请问下面的 model 参数的类型该如何定义呢？
我试了半天，好像没有办法

import { PrismaClient, User, Post } from '@prisma/client'

const fn = (model: any) => { // 这里的 model 类型该如何写呢
  return model.findMany({})
}

const prisma = new PrismaClient()

fn(prisma.user)
fn(prisma.post)
fn(prisma.xxxxx) // 要能支持传递任意模型

Answer 1

import { PrismaClient, Prisma } from "@prisma/client";

type ModelDelegate = {
  findMany: (params?: any) => any;
 
}

const fn = (model: ModelDelegate) => { // 使用 ModelDelegate 类型代替 any
  return model.findMany({})
}

const prisma = new PrismaClient()

fn(prisma.user)
fn(prisma.post)
// fn(prisma.xxxxx) 

Answer 2

interface ModelType<T> {

  findMany(): Promise<T[]>;

}

const fn = <T extends ModelType<any>>(model: T) => {

  return model.findMany({});

};