tell your IDE to use tabs as spaces. Problem solved.

In the spirit of side-stepping questions :)

What really matters is consistency, whether by following a style guide, automated linting and code formatting, or if you're working on your own just being independently consistent.

Personally, I like an IDE that's aware of coding style guides and can enforce or apply them automatically. If a language has a style spec, there's usually a plugin (Go, PHP). And if you're specifying your own rules, check out EditorConfig, a file format that you can put in your source directory to instruct many supported IDEs about the rules you'd like to enforce. It's not a comprehensive tool, but I appreciate its intent.

Take a look at this discussion.

Use spaces in tabs. If you use tabs. well just look at file size for the one guy using them compared to everyone else using spaces.