Pug in angle 6 does not consider brackets or elements without value in the template

I have been working with jade and angularJS 1.x using Prepos; Now that I have migrated to angular 6+ angular material I have the problem that the HTML result of the compilation of pug does not consider the following:

mat-icon.my-icon(*ngIf="estado" (click)="drawer.toggle();CambiarEstado()") toggle_off <-- bota error en el ngIf

input(matinput placeholder='email', [(ngModel)]='email', name='email', required) <-- el matImput lo completa MatImput = "MatImput" (pasa lo mismo con el required) y el [(ngModel)]="email" desaparece

mat-drawer.my-sidenav(#drawer mode="side" opened="true") <-- no considera el #drawer

some idea of how to solve this is appreciated in advance.

Cordial greetings;