Ionic React

This guide shows you how to deploy a Ionic React application on Layer0.

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Install the Layer0 CLI

If you have not already done so, install the Layer0 CLI

npm i -g @layer0/cli

Create a new Ionic React app

If you don’t already have a Ionic React app, create one by running the following:

npm install -g @ionic/cli
ionic start myApp tabs --type react
cd myApp

You can verify your app works by running it locally with:

npm run start

Configuring your Ionic React app for Layer0

Initialize your project

In the root directory of your project run 0 init:

0 init

This will automatically update your package.json and add all of the required Layer0 dependencies and files to your project. These include:

The @layer0/core package - Allows you to declare routes and deploy your application on Layer0
The @layer0/prefetch package - Allows you to configure a service worker to prefetch and cache pages to improve browsing speed
layer0.config.js - A configuration file for Layer0
routes.js - A default routes file that sends all requests to Ionic React.

Configure the routes

Update routes.js at the root of your project to the following:

// This file was added by layer0 init.
// You should commit this file to source control.

import { Router } from '@layer0/core/router'

export default new Router()
  .static('build', ({ cache }) => {
    cache({
      edge: {
        maxAgeSeconds: 60 * 60 * 60 * 365,
        forcePrivateCaching: true,
      },
      browser: {
        maxAgeSeconds: 0,
        serviceWorkerSeconds: 60 * 60 * 24,
      },
    })
  })
  .fallback(({ appShell }) => {
    appShell('build/index.html')
  })

Refer to the Routing guide for the full syntax of the routes.js file and how to configure it for your use case.

Run the Ionic React app locally on Layer0

Create a production build of your app by running the following in your project’s root directory:

npm run build

Run Layer0 on your local machine:

0 dev

Load the site http://127.0.0.1:3000

Deploying

Create a production build of your app by running the following in your project’s root directory:

npm run build

Next, deploy the build to Layer0 by running the 0 deploy command:

0 deploy

Refer to the Deploying guide for more information on the deploy command and its options.