import { OnInit, EventEmitter } from '@angular/core';
import { FormControl, FormGroup } from '@angular/forms';
import { PurchaseService } from '@schoolbelle/api/purchase';
import { Subscription } from 'rxjs';
export declare class ProductParams {
    productId: number;
    amount?: number;
    quantity?: number;
}
export declare class SelectAbstractComponent implements OnInit {
    protected purchase: PurchaseService;
    form: FormGroup;
    required: boolean;
    products: ProductParams[];
    productsChange: EventEmitter<ProductParams[]>;
    uuid: string;
    indexCtrl: FormControl;
    paymentCurrency: FormControl;
    taxRate: FormControl;
    protected subscriptions: Subscription;
    constructor(purchase: PurchaseService);
    ngOnInit(): void;
    onUpdate(index: number): void;
    ngOnDestroy(): void;
}