VSCode Guide

dotnet tool install --global dotnet-ef
dotnet ef migrations add InitialCreate -p Persistence/ -s API/

React

npx create-react-app my-app
cd my-app
npm start

The following command is not working, --typescript was deprecated.

npx create-react-app client-app --use-npm --typescript

So we have to use this one to create app with .tsx files (Typescript):

npx create-react-app my-app --template typescript

dotnet watch run

In the directory with package.json you can start the app:

npm start

yarn start

Open in VS Code

code .

Omnisharp: Restart OmniSharp

DotNet Core version

dotnet --version

DotNet Core a list of all SDKs

dotnet --list-sdks

DotNet Core a list of all runtimes

dotnet --list-runtimes

The EF Core tools version '3.1.8' is older than that of the runtime

The EF Core tools version '3.1.8' is older than that of the runtime '3.1.10'

Update to a specific version:

dotnet tool update --global dotnet-ef --version 3.1.10

Update to the latest version:

dotnet tool update --global dotnet-ef

.Net Core CLI in the terminal window:

dotnet add package FluentValidation
dotnet add package Microsoft.AspNetCore.Identity

Check files. There is npm check. But do not use yarn check. It doesn´t work well and shows a lot of misleading information and errors.

yarn install --check-files

yarn remove package-name

In npm we can install a new package with npm install package-name

npm install package-name

In yarn we use add

yarn add package-name

yarn upgrade package-name

yarn outdated
yarn outdated package-name

npm view [package-name] version
yarn info [package-name] version

^17.0.1 [major.minor.patch] - means anything newer from 17.0.1 (including) up to like 17.0.2, 17.0.9, 17.1.9, 17.9.9, 18.0.0, 18.19.45 etc.

~17.0.1 - means a higher minor version (including) like 17.0.1, 17.0.2 but not 17.0.0

~17.13.1 - 17.13.1 (including), 17.13.2., 17.13.3 but not 17.13.0 or 17.18.0

Source: https://bytearcher.com/goodies/semantic-versioning-cheatsheet/ You can download cheetsheet from here.

17.0.1 - it has to be THIS version, nothing else

If you are not still sure you can try npm server calculator https://semver.npmjs.com or Semantic versioning using npm https://nodejs.dev/learn/semantic-versioning-using-npm

What symbol @ means? It is for scoped packages where namespace can be used @company/xypackage Its clear which package is official ie @angular