form-login.component.html

<form name="form" (ngSubmit)="f.form.valid && emitSubmit(f.form.value)" #f="ngForm" novalidate>
    <div class="form-group">
        <label for="email">Email address</label>
        <input type="email" id="email" class="form-control" name="email" [(ngModel)]="model.email"
            placeholder="Enter email" required autofocus>
        <small class="form-text text-muted">We'll never share your email with anyone else.</small>
    </div>
    <label for="password">Password</label>
    <div class="input-group mb-3">
        <input [type]="showPassword ? 'text' : 'password'" id="password" class="form-control"
            placeholder="Password" name="password" [(ngModel)]="model.password" aria-label="Password" required>
        <div class="input-group-append">
            <button class="btn btn-outline-secondary" type="button" id="button-addon2"
                (click)="showPassword = !showPassword">
                <div *ngIf="!showPassword"><span class="fas fa-fw fa-eye-slash"></span></div>
                <div *ngIf="showPassword"><span class="fas fa-fw fa-eye"></span></div>
            </button>
        </div>
    </div>
    <div class="form-group">
        <button type="submit" class="btn btn-success" [disabled]="!f.form.valid || f.form.pristine">Sign In</button>
    </div>
</form>