TypeScript Path Aliases Across Monorepo Workspaces: Configuring tsconfig So Your Astro, React, and FastAPI Projects Share Types Without Import Hell
Monorepos are great until they're not. I've been burned by relative import chains more times than I'd like to admit. You're three directories deep in your React dashboard, you need a User type from your shared package, and you're staring at ../../../packages/types/src/user.ts. Then someone reorganizes the folder structure, and everything breaks.
I'm here to tell you: this problem is solvable with proper TypeScript path alias configuration. I've set this up across CitizenApp's stack—Astro marketing site, React 19 dashboard, FastAPI backend, and shared types package—and I'm going to show you exactly what works.
Why Path Aliases Matter in Monorepos
When you're working with multiple workspaces that need to share types, you have three options:
