There are two main actors involved in this scenario: User and Habit. The relationship between them is defined by a OneToMany connection from User to Habit, and vice versa with a ManyToOne.
User Entity
import {Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, BeforeInsert, BeforeUpdate, OneToMany} from "typeorm";
import * as bcrypt from "bcryptjs";
import { Habit } from "../habits/habits.entity";
@Entity()
export class User {
@PrimaryGeneratedColumn("uuid")
id: string;
@Column()
name: string;
@Column()
email: string;
@Column()
password: string;
@OneToMany(type => Habit, habit => habit.author)
habits: Habit[];
@CreateDateColumn()
dateCreated: Date;
@UpdateDateColumn()
dateUpdated: Date;
@BeforeInsert()
@BeforeUpdate()
async hashPassword(): Promise<void> {
this.password = await bcrypt.hash(this.password,10);
}
async comparePassword(password: string): Promise<boolean> {
return bcrypt.compare(password, this.password);
}
constructor(props: any) {
Object.assign(this, props);
}
}
Habit Entity
import {Column, CreateDateColumn, Entity, PrimaryGeneratedColumn, UpdateDateColumn, ManyToOne} from "typeorm";
import { User } from "../users/users.entity";
@Entity()
export class Habit {
@PrimaryGeneratedColumn("uuid")
id: string;
@Column()
name: string;
@Column({ nullable: true})
description?: string;
@ManyToOne(type => User, user => user.habits)
author: User;
@CreateDateColumn()
dateCreated: Date;
@UpdateDateColumn()
dateUpdated: Date;
constructor(props: Partial<Habit>) {
Object.assign(this, props);
}
}
Issue Encountered
During the setup of the aforementioned relationships, there was an error detected:
WARNING in Circular dependency detected:
apps\api\src\habits\habits.entity.ts -> apps\api\src\users\users.entity.ts -> apps\api\src\habits\habits.entity.ts
WARNING in Circular dependency detected:
apps\api\src\users\users.entity.ts -> apps\api\src\habits\habits.entity.ts ...
ReferenceError: Cannot access 'User' before initialization ...
[Additional error messages displayed]
Note
The development environment utilizes Nx for project management and NestJS for application development. TypeOrm version in use is "^0.2.22", and @nestjs/typeorm version is "^6.2.0"
The configuration within the tsconfig.json file is provided below:
{
"compileOnSave": false,
...
[Remaining tsconfig settings]
"@awhile/ui": ["libs/ui/src/index.ts"]
}
}
Prior suggestions like utilizing a ManyToMany relation and altering the ECMAScript target version have been attempted without resolving the issue. Notably, this reference error does not occur in a separate NestJS app that does not utilize Nx.
The entities are strictly used within their services and face no instantiation elsewhere.
Any insights or assistance would be greatly appreciated. Thank you for your time.