Lab 1: Creating a New Project

Objectives

• Create a new React project (app) that uses TypeScript
• Open the new project
• Review the default project structure

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Steps

Create a new React project

1. As part of the course setup, you created a code directory for the course (somewhere on your computer that you would easily remember). If you haven't created a code directory yet please do that now.

2. Open a command prompt (Windows) or terminal (Mac).

3. Change the current directory to your code directory.

4. Run ONE of the following commands:

   If you want to use npm as your package manager.

   npm

   npx create-react-app keeptrack --template typescript --use-npm

   If you want to use Yarn as your package manager.

   Yarn

   yarn create react-app keeptrack --template typescript

   yarn create is available in Yarn 0.25+

Open the new project

1. Change the current directory (cd) to the directory you created in the last step.

   cd keeptrack

2. Open the keeptrack directory in your editor of choice.

   If you are using Visual Studio Code you can run the following command in your terminal: code .

   ...code refers to Visual Studio Code and . means current directory

   if code is not in your command prompt (Windows) or terminal (Mac) PATH

   • in Visual Studio Code choose View>Command Palette> Shell Command: Install 'code' command in PATH

Review the default project structure

1. Take a few minutes to go over the default project structure. Below are some files to look at:

   • package.json
   • public/index.html is the page template
   • src/index.tsx is the JavaScript entry point
   
   

   For the project to build, the last two files above files must exist with exact filenames:

   You can delete or rename the other files.

   You may create subdirectories inside src. For faster rebuilds, only files inside src are processed by Webpack. You need to put any TS and CSS files inside src, otherwise Webpack won’t see them.

   Only files inside public can be used from public/index.html.

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✔ You have completed Lab 1