TypeScript Configuration
Source Maps
Configure sourceMap and inlineSources for browser and Node.js debugging.
Last Updated: July 29, 2026
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10 min read
Source maps map emitted JavaScript code back to original TypeScript source lines for debugging in DevTools.
1. Introduction & Architecture
2. Deep Dive & Core Concepts
Source maps allow setting breakpoints directly inside .ts source files in Chrome DevTools or VS Code.
3. Basic Code Example
4. Advanced Production Patterns
5. Interactive Code Playground
console.log("Source maps enable debugging original TypeScript code.");6. Common Pitfalls & Edge Cases
Warning: Do NOT deploy source maps to public production servers if source code privacy is required.
7. Interview Q&A & Quizzes
Q: How do source maps aid debugging?
A: They allow debuggers to display and map execution breakpoints directly onto original TypeScript files.
8. Summary Comparison Table
| Setting | Output |
|---|---|
"sourceMap": true | Emits separate .js.map files |
"inlineSourceMap": true | Inlines base64 source map in .js file |