Data Context

The example app uses prisma, which is an excellent ORM. The benchmark app uses an in-memory solution.

For now lets make a simple implementation of the latter.

User Entity

Start by defining an entity interface.

src/domain/user.ts

interface IUser {
    id: string;
    name: string;
    email: string;
    createdAt: Date;
    updatedAt: Date;
}

export default IUser;

Data Context Service

Add simple functionality to data context service.

src/services/data-context-service.ts

import { randomUUID } from 'crypto';
import {
    injectService,
    SingletonService,
    type ILoggerService,
    type IDataContextService,
} from '@lindeneg/funkallero';
import SERVICE from '@/enums/service';
import type User from '@/domain/user';

class DataContextService
    extends SingletonService
    implements IDataContextService
{
    @injectService(SERVICE.LOGGER)
    private readonly logger: ILoggerService;

    public readonly userRepository = new Map<User['id'], User>();

    public async createUser(
        user: Omit<User, 'id' | 'createdAt' | 'updatedAt'>
    ) {
        const id = randomUUID();
        const now = new Date();
        const createdUser = { ...user, id, createdAt: now, updatedAt: now };
        this.userRepository.set(id, createdUser);
        return createdUser;
    }
}

export default DataContextService;