import { ElementRef, EventEmitter, OnChanges, SimpleChanges } from '@angular/core';
import { FormControl, FormGroup } from '@angular/forms';
import { EquipmentUsage } from '../../../shared/domain/item';
export declare class UsageComponent implements OnChanges {
    usage: EquipmentUsage;
    usageChanged: EventEmitter<EquipmentUsage>;
    usageQuantityInput: ElementRef;
    usageForm: FormGroup;
    usageQuantity: FormControl;
    usageType: FormControl;
    constructor();
    private initUsageQuantity;
    private initUsageType;
    private emitValuesIfValid;
    ngOnChanges(changes: SimpleChanges): void;
}