Explain 'Isolated Modules' and Transpiler Compatibility.

The 'isolatedModules' flag ensures every file can be safely transpiled by tools that don't perform full type-checking[cite: 1].

Babel or esbuild operate on one file at a time and don't know the full type graph. Features like const enums require cross-file knowledge. This flag forces you to avoid these patterns, ensuring your project remains compatible with high-performance build tools[cite: 1].