I'm sending an "Entity" to the function and using it inside the function. But it is giving me this error.

export type Entities = User | Blog | Service

import AppDataSource from '../database'
import { Entities } from '../entity/index'
import User from '../entity/User'

const getList = async (entity: Entities) => {
  const list = (await AppDataSource.manager.find(entity))
}

Argument of type 'Entities' is not assignable to parameter of type 'EntityTarget'. Type 'User' is not assignable to type 'EntityTarget'.

enter image description here

CodePudding user response：

you need to extend from EntityTarget:

export interface User extends EntityTarget<unknown> {}
export interface Blog extends EntityTarget<unknown> {}
export interface Service extends EntityTarget<unknown> {}

export type Entities = User | Blog | Service

import AppDataSource from '../database'
import { Entities } from '../entity/index'
import User from '../entity/User'

const getList = async (entity: Entities) => {
  const list = (await AppDataSource.manager.find(entity))
}

CodePudding user response：

I got such an error in the code above "'X' type argument cannot be assigned to 'X' type parameter" I did it this way to solve the problem:

import { EntityTarget } from 'typeorm'
import AppDataSource from '../database'

export type _User = EntityTarget<'User'>
export type _Blog = EntityTarget<'Blog'>
export type _Service = EntityTarget<'Service'>

export type Entities = _User | _Blog | _Service

export const getList = async (entity: Entities) => {
  const list = (await AppDataSource.manager.find(entity))
}

But I'm not sure if it's healthy

CodePudding user response：

I solved the problem this way, it seems more logical. Thanks

import { EntityTarget } from 'typeorm'
import AppDataSource from '../database'

const getList = async <E>(entity: EntityTarget<E>) => {
  const list = await AppDataSource.manager.find(entity)
}