从 angular 8 升级到 angular 9 时，在 tsconfig 文件中未显示 enableIvy 选项

Question

I tried to upgrade angular project from version 8 to 9. After upgrade, i didnot find enableIvy option in tsconfig file. Shall i need to add enableIvy as true inside tsconfig manually? or Default it is true?

Answer 1

In angular 9 its enabled by default. In docs

Ivy is the code name for Angular's next-generation compilation and rendering pipeline. With the version 9 release of Angular, the new compiler and runtime instructions are used by default instead of the older compiler and runtime, known as View Engine.