@nestjs/core/errors/exceptions/circular-dependency.exception.js

Nest - modern, fast, powerful node.js web framework (@core)

import { RuntimeException } from './runtime.exception.js';
export class CircularDependencyException extends RuntimeException {
    constructor(context) {
        const ctx = context ? ` inside ${context}` : ``;
        super(`A circular dependency has been detected${ctx}. Please, make sure that each side of a bidirectional relationships are decorated with "forwardRef()". Note that circular relationships between custom providers (e.g., factories) are not supported since functions cannot be called more than once.`);
    }
}