(e.g., an automated project editor, a file converter, or a new block within the Scratch interface?)
For developers tracking Scratch projects in Git, a popular "feature" is a pre-processing script. This script automatically unzips the .sb3 upon commit to save the project.json as readable text, making it easier to see code changes in a repository. 3. Custom Extension Development
zeljkofilipin/scratch-games: Simple games written in Scratch
Once compiled, the extension's data will be stored within the project.json whenever the user saves their project as an .sb3 .