TypeScript 6.0 `--noEmit` Promises 60-80% Faster CI Builds

TypeScript 6.0's `--noEmit` flag separates type-checking from code generation, allowing parallel builds with faster transpilers like esbuild or swc. This can reduce CI build times by 60-80% while maintaining type safety. The approach eliminates the need for tsc to produce JavaScript output in production pipelines.