if(x > 1920 && y < 4 && p !== 'expand') {
         // do work
    } else {
         // do work
    }

const max_screen_size = 1920;
    const min_device_count = 4;
    const expanded_mode = 'expand';

    const valid_screen = screen_size > max_screen_size && device_count < min_device_count;
    const valid_mode = mode !== expanded_mode;

    if(valid_screen && valid_mode) {
       // do work
    } else {
       // do work
    }

<div *ngIf="user_role === 'admin'>
         Admin features
    </div>
    <div *ngIf="user_role !== 'admin'>
         General features
    </div>

<div *ngIf="user_role === 'admin; else general'>
         Admin features
    </div>
    <ng-template #general>
         General features
    </ng-template>

<div *ngIf="data.user.permission">
        <span>{{data.user.permission.title}}</span>
        <span>{{data.user.permission.code}}</span>
   </div>

<div *ngIf="data.user.permission as perm">
        <span>{{perm.title}}</span>
        <span>{{perm.code}}</span>
   </div>