This function validates the requested path is valid for sharing (that it is /share/filename.ext) and that the extension is an expected image file type. It will validate the file exists in storage, and if so return HTML will valid <head> to support open graph and twitter sharing.

Serving the functions locally

From the root folder of the project, run firebase serve. The console will output localhost paths that you can access in your browser.

For instance, to test the "share" function, try http://localhost:5001/io-photobooth-dev/us-central1/shareImage/share/upload.jpg

Running tests

In this folder run npm test

Lint and format files

npm run lint
npm run lint:fix

README.md

Firebase Functions

'share' function

Serving the functions locally

Running tests

Lint and format files