Using obsidian as the GUI, this plugin would scan through a code repository and generate a graph of the file dependencies. Thus enabling new developers to visualize the structure of a codebase when getting started.
My first attempt will be building this in C++. If others think this is helpful lmk! I might not get around to this for a while… 
Why Obsidian and not something like a plugin for VS Code? I’m sure several VS Code plugins already do some of the things you’re looking to do.
Perhaps you can even run some JavaScript in Obsidian to trigger the right VS Code plugin and output the graph that you want to view inside of Obsidian?
Good idea, I like the way you think. It might be easier to contribute to vscode depencency graph and add visualizer for obsidian