This document introduces PharoJS, a framework that allows developing applications in Pharo and running them on JavaScript and web platforms like browsers. It discusses how PharoJS allows developing the model in Pharo alone, integrating HTML, CSS and JS, and generating JavaScript from Pharo. It also outlines available tools like a playground, inspector and test support. Future plans include migrating to Pharo 6, improving coverage and tools, and addressing challenges like debugging between Pharo and JavaScript.

1. Develop in Pharo, run on Javascript
h"p://pharojs.org
Noury Bouraqadi & Dave Mason

2. Web
Clients
Mobile
Apps
Javascript
HTML
CSS

3. Web
Clients
Mobile
Apps

4. Web
Clients
Mobile
Apps
Tools
framework

5. Javascript 0% 100%
Development ProducHon
Lifecycle with
100% Pharo 0%

6. Model Development
Pharo alone !

7. IntegraHon with HTML, CSS and JS
Pharo talks to Javascript

8. ProducHon
Javascript Alone
Javascript
100% generated from
Pharo

9. Available Tools
• Playground on JS
• Inspector on JS objects
• Test support = extension to SUnit
– target mulHple JS interpreters/browsers
• More to come

10. Demo

11. What Next?
• Migrate to Pharo 6
• Coverage for Core Pharo Libraries (Lazy)
• Improve Tools
– Code ExtracHon
– Debugging
– Generate HTML

12. Some Challenges
• Debugging the Pharo <-> Javascript
middleware
– running tests in batch raise error
– but they pass individually
• OS connecHon:
– Reliable/Fail safe when launching JS interpreter

13. Learn more about PharoJS
• Web h"p://pharojs.org
– Thanks ESUG for the support
• Slack h"ps://pharojs.slack.com/
– Discussions
• Twi"er @pharojs
– News
– SubscripHon to PharoJS Slack