ts-babel

ts-babel (v6.1.7) transforms the output of the TypeScript compiler using Babel for fine-grained control over target environments. It acts as a bridge between TypeScript's compilation and Babel's polyfill and syntax transformation capabilities, allowing projects to use TypeScript for type checking and modern syntax while leveraging Babel for cross-browser compatibility. Key differentiator: avoids duplicate parsing by feeding TypeScript's emit directly into Babel, preserving source maps. Maintenance status unknown (last release likely older). Requires TypeScript ^3.5.2 as a peer dependency and Node >=8.10.0.