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Hobby project - Store and view exchange rates

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The next step in my project was to test out being able store and display the rates in a database. I decided to use nodejs and supabase for this. Everything worked beautifully. Only hickup was the following error due to my package.json not being correct.

SyntaxError: Cannot use import statement outside a module

Added this to package.json

  "type": "module"

This works beautifully. Right now I am just testing fragments of what could be part of a bigger system to see what is possible and what works and how easy to code on a mobile. There is no fully functioning integrated end to end system just yet.



This is also what I tested. A serverless append-only database using GitHub + Actions + Pages. That’s basically a lightweight backend system. This was the ChatGPT prompt I used.

Guide me through each step. This is what I want. A manually run github actions that adds to docs/data.json with the current date and time. docs/index.html displays all the entries in data.json.

Make sure and give the action permission to write to repo or else you will get an error like this - remote: Permission to hassan-theitguy/update-data-test.git denied to github-actions[bot].

To avoid caching issues I tried the following in my javascript - const res = await fetch("data.json?v=" + Date.now());



I also asked ChatGPT the following - I have been doing some hobby coding. Things I have tested so far. Scraping a website for exchange rates and serving the data via my api. Emailing and sending the data via email and sms. Storing data in supabase and displaying it in a webpage. What else can I test out?

And the response - You’ve already covered a really solid “full loop” stack: data ingestion (scraping), processing, storage (Supabase), delivery (email/SMS), and presentation (web app). The natural next step is to start adding complexity in systems, not just more features.

https://trinbagotechie.blogspot.com/2026/05/hobby-project-next-experiments.html

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