Modules & Namespaces
Path Aliases & baseUrl
Clean up deep relative imports with tsconfig path mapping.
Last Updated: July 29, 2026
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10 min read
Path aliases replace deep relative import paths (../../components) with clean aliases (@/components).
1. Introduction & Architecture
2. Deep Dive & Core Concepts
Path mapping requires setting baseUrl and configuring paths in tsconfig.json.
3. Basic Code Example
4. Advanced Production Patterns
5. Interactive Code Playground
console.log("Path aliases eliminate ugly relative import trajectories.");6. Common Pitfalls & Edge Cases
Note: Path aliases in tsconfig only inform TypeScript. You must also configure your bundler (Vite/Next.js) to resolve the same path aliases!
7. Interview Q&A & Quizzes
Q: Why isn't setting tsconfig paths enough on its own?
A: TypeScript only checks types; the bundler or Node runtime must also be configured to resolve the aliases at runtime.
8. Summary Comparison Table
| Tool | Configuration File |
|---|---|
| TypeScript Compiler | tsconfig.json |