Indexable PWA
A sample ExpressJS PWA that explores and demonstrates the best practices for implementing a PWA in regards to indexability of content.
Can be configured for 3 specific rendering modes:
- Client
- Server
- Hybrid
Local Development Setup
Install this package via npm:
npm install
Install bower and the fetch polyfill to support Safari:
npm install bower
bower install fetch
Run the server via:
node server.js
Deploying to App Engine
Follow this link to setup your App Engine project for Node.JS:
https://cloud.google.com/nodejs/
To deploy a particular configuration to App Engine specify the yaml file:
gcloud app deploy app.yaml
Use app.yaml to set environment variables to override the config.js file.
Example .yaml file:
runtime: nodejs
vm: true
env_variables:
AMP_MODE: disabled
RENDER_MODE: hybrid
UPDATE_MODE: json
Configuration Patterns
Configure config.js:
- ampMode: [enabled, disabled]
- renderMode: [server, client, hybrid]
- updateMode: [json, html, disabled]
- json: causes AJAX requests to be fetched as JSON from the server and the DOM to be updated via reading the JSON.
- html: causes AJAX requests to be fetched as HTML from the server, the HTML is parsed on the client and the DOM to be updated via reading the parsed HTML from the server.
Recommended configuration patterns:
Server Sample
For server-side rendering:
{
"ampMode": "disabled",
"renderMode": "server",
"updateMode": "disabled",
"googleSiteVerificationToken": ""
}
Client Sample
For client-side rendering.
updateMode can be configured as either 'json' or 'html'.
{
"ampMode": "disabled",
"renderMode": "client",
"updateMode": "json",
"googleSiteVerificationToken": ""
}
Hybrid Sample
For hybrid rendering.
updateMode can be configured as either 'json' or 'html'.
{
"ampMode": "disabled",
"renderMode": "hybrid",
"updateMode": "json",
"googleSiteVerificationToken": ""
}