1. Open backend folder and install the dependancies.

    npm i 

2. Set the database.

Open my MySql Workbench and create new Schema with name

socialdb

Set the default charset to utf-8

Create new file with name ormconfig.json to set cofigurations for the typeorm.
The file must be in the backend folder. Just replace with your password and username.
The file should include the following code:

    {
    "type": "mysql",
    "host": "localhost",
    "port": 3306,
    "username": "root",
    "password": "mypassword123",
    "database": "socialdb",
    "synchronize": true,
    "logging": false,
    "entities": ["src/database/entities/**/*.ts"],
    "migrations": ["src/database/migration/**/*.ts"],
    "cli": {
        "entitiesDir": "src/database/entities",
        "migrationsDir": "src/database/migration"
    }

Set the .env file following the example :
The file must be in the backend folder. replace with your data.

    PORT=3000
    DB_TYPE=mysql
    DB_HOST=localhost
    DB_PORT=3306
    DB_USERNAME=root
    DB_PASSWORD=mypassword123
    DB_DATABASE_NAME=socialdb

If you need to test with some data.
There is a prepared file in the root folder

Which is a self-contained file, and import it in the socialdb schema.

3. Open front-end folder and install the dependancies.

    npm i 

To start the back-end server open backend folder

    npm run start:dev

Important! In order to run your nestjs Api you need to include

    getType(): string;        

in backend\node_modules@nestjs\platform-express\adapters\express-adapter.d.ts
This file should look like this.

    import { RequestMethod } from '@nestjs/common';
    import { CorsOptions } from '@nestjs/common/interfaces/external/cors-options.interface';
    import { NestApplicationOptions } from '@nestjs/common/interfaces/nest-application-options.interface';
    import { AbstractHttpAdapter } from '@nestjs/core/adapters/http-adapter';
    import { ServeStaticOptions } from './../interfaces/serve-static-options.interface';
    export declare class ExpressAdapter extends AbstractHttpAdapter {
    private readonly routerMethodFactory;
    constructor(instance?: any);
    reply(response: any, body: any, statusCode?: number): any;
    status(response: any, statusCode: number): any;
    render(response: any, view: string, options: any): any;
    redirect(response: any, statusCode: number, url: string): any;
    setErrorHandler(handler: Function): any;
    setNotFoundHandler(handler: Function): any;
    setHeader(response: any, name: string, value: string): any;
    listen(port: string | number, callback?: () => void): any;
    listen(port: string | number, hostname: string, callback?: () => void): any;
    close(): any;
    set(...args: any[]): any;
    enable(...args: any[]): any;
    disable(...args: any[]): any;
    engine(...args: any[]): any;
    useStaticAssets(path: string, options: ServeStaticOptions): any;
    setBaseViewsDir(path: string | string[]): any;
    setViewEngine(engine: string): any;
    getRequestMethod(request: any): string;
    getRequestUrl(request: any): string;
    enableCors(options: CorsOptions): void;
    createMiddlewareFactory(requestMethod: RequestMethod): (path: string, callback: Function) => any;
    initHttpServer(options: NestApplicationOptions): void;
    registerParserMiddleware(): void;
    private isMiddlewareApplied;
    getType(): string;

}

To start the client :

    ng serve --open 

The port is http://localhost:4200/