nest js tutorial code example

Example 1: nestjs start server

//in root of project
npm run start

Example 2: nestjs tutorial for beginners

getCourses(): Promise<any> {
        return new Promise(resolve => {
            resolve(this.courses);
        });
    }

    getCourse(courseId): Promise<any> {
        let id = Number(courseId);
        return new Promise(resolve => {
            const course = this.courses.find(course => course.id === id);
            if (!course) {
                throw new HttpException('Course does not exist', 404)
            }
            resolve(course);
        });
    }

Example 3: nestjs tutorial for beginners

import { Injectable, HttpException } from '@nestjs/common';
import { COURSES } from './courses.mock';

@Injectable()
export class CoursesService {
    courses = COURSES;
}