To create a new Svelte app, you will need to have Node.js and npm (the package manager for Node.js) installed on your computer.
First, create a new directory for your project:
mkdir my-svelte-app
cd my-svelte-app
Then, initialize a new npm project by running the following command:
npm init -y
This will create a package.json file in your project directory, which will store information about your project, including the dependencies that it uses.
Next, install the Svelte CLI by running the following command:
npm install -g svelte-cli
This will install the svelte command-line tool, which you can use to create and build Svelte apps.
Now, use the Svelte CLI to create a new Svelte app by running the following command:
svelte create
This will prompt you to choose a template for your app. You can choose the default template, or you can choose one of the other available templates.
Once the app has been created, navigate to the project directory and start the development server by running the following command:
cd my-svelte-app
npm run dev
This will start the development server and open a new browser window with your Svelte app running. You can now start developing your app!