February 11, 2020 /   angular 9 features   angular js   javascript

Ivy compiler is made default compiler on Angular 9. This enables final js bundle size to decrease 25-30% improving overall app performance. Until Angular 8 ViewEngine was default compiler and rendering engine.

Ivvy compiler has improved i18n, type checking, css and style binding, debugging, improved build time by sing AOT.

You can upgrade to Angular 9 by doing

ng update @angular/core @angular/cli

Remember that you should upgrade to Angular 8 before upgrading to Angular 9.