Question

Which Compiler does use by Angular 9 version?

Answer 1

 Version 9 moves all applications to use the Ivy compiler and runtime by default. Angular has been updated to work with TypeScript 3.6 and 3.7. In addition to hundreds of bug fixes, the Ivy compiler and runtime offers numerous advantages:

• Smaller bundle sizes
• Faster testing
• Better debugging
• Improved CSS class and style binding
• Improved type checking
• Improved build errors
• Improved build times, enabling AOT on by default
• Improved Internationalization